Total loans and leases
Total loans
Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process
Schedule of Amount of Gross Unrealized Losses for Debt Securities and Estimated Fair Value
Debt Securities, Available-for-Sale [Table Text Block]
Customer commodity derivatives
Commodity Contract [Member]
Amortized cost
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date [Abstract]
Award Timing Predetermined
Award Timing Predetermined [Flag]
Entity File Number
Entity File Number
Accumulated paid-in capital
Additional Paid-in Capital [Member]
Interest-bearing:
Interest-Bearing Deposit Liabilities [Abstract]
Tabular List, Table
Tabular List [Table Text Block]
Recent Accounting Pronouncements and Developments
New Accounting Pronouncements, Policy [Policy Text Block]
Schedule of Carrying Values and Estimated Fair Values
Fair Value, by Balance Sheet Grouping [Table Text Block]
Loans acquired in purchase of California branches, net (at time of purchase)
Loans Assumed
Measurement Basis [Axis]
Measurement Basis [Axis]
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Total unfunded lending commitments
Total Unfunded Lending Commitments
Total Unfunded Lending Commitments
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
REVENUE FROM CONTRACTS WITH CUSTOMERS
Revenue from Contract with Customer [Text Block]
Unrealized loss amortization associated with the securities transferred from AFS to HTM, before tax
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax
Financing Receivable Portfolio Segment [Domain]
Financing Receivable Portfolio Segment [Domain]
Recoveries
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery
Other liabilities:
Other Liabilities [Abstract]
Losses from fair value changes
Fair Value, Option, Changes in Fair Value, Gain (Loss)
Allowance for loan losses
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Due after one year through five years
Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Change in other assets
Increase (Decrease) in Other Operating Assets
Share-based compensation
Share-Based Payment Arrangement, Noncash Expense
Par value of hedged items
Derivative Asset, Notional Amount
Stock options
Share-Based Payment Arrangement, Option [Member]
Leasing
Finance Leases Portfolio Segment [Member]
Asset Pledged as Collateral without Right
Asset Pledged as Collateral without Right [Member]
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
OFFSETTING ASSETS AND LIABILITIES
Cash, Cash Equivalent, and Short-Term Investment [Text Block]
Dividends on common stock
Dividends, Common Stock, Cash
Total shareholders’ equity
Balance at beginning of period
Balance at end of period
Accumulated other comprehensive loss
Equity, Attributable to Parent
Due after five years through ten years
Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Other comprehensive income, net of tax:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Insider Trading Policies and Procedures [Line Items]
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Less undistributed earnings applicable to nonvested shares
Undistributed Earnings Applicable to Nonvested Shares
Undistributed Earnings Applicable to Nonvested Shares
Nevada
NEVADA
Terminated or redesignated, unamortized basis adjustments, assets
Terminated And Redesignated Swaps, Unamortized Basis Adjustments, Assets
Terminated And Redesignated Swaps, Unamortized Basis Adjustments, Assets
New Mexico
NEW MEXICO
LIABILITIES AND SHAREHOLDERS’ EQUITY
LIABILITIES AND SHAREHOLDERS' EQUITY
Liabilities and Equity [Abstract]
Cover [Abstract]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Maximum
Maximum [Member]
Available-for-sale, total, estimated fair value
Debt Securities, Available-for-Sale, Unrealized Loss Position
Due after ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]
Financing Receivable, Credit Quality Indicator [Table]
Number of branches owned
Number of Branches Owned
Number of Branches Owned
Oregon
OREGON
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Other assets
Other Assets [Member]
Due after ten years
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 10
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Weighted-average term extension (in months)
Financing Receivable, Modified, Weighted Average Term Increase from Modification
Entity Shell Company
Entity Shell Company
Revolving loans converted to term loans amortized cost basis
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan
Net credit valuation adjustment reducing fair value
Change In Fair Value Of Derivative Asset By Credit Value Adjustment
Change In Fair Value Of Derivative Asset By Credit Value Adjustment
Federal funds sold and securities purchased under agreements to resell
Federal Funds Sold and Securities Purchased under Agreements to Resell
Total debt securities
Debt Securities, Available-for-Sale, Maturity, Weighted Average Yield
Debt Securities, Available-for-Sale, Maturity, Weighted Average Yield
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Operating Segments
Operating Segments [Member]
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis]
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis]
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Total interest expense
Interest Expense, Operating
30-89 days past due
Financial Asset, 30 to 89 Days Past Due [Member]
Financial Asset, 30 to 89 Days Past Due
Texas
TEXAS
Income before income taxes
Income (loss) before income taxes
Income (Loss) from Continuing Operations before Income Taxes, Domestic
1-4 family residential
One Through Four Family Residential [Member]
One through four Family Residential [Member]
Document Fiscal Period Focus
Document Fiscal Period Focus
Goodwill and intangibles
Intangible Assets, Net (Including Goodwill)
Single family residential
Single Family Residential [Member]
Single Family Residential
Interest on securities
Interest Income, Debt Securities, Operating
Award Timing Method
Award Timing Method [Text Block]
Nonaccrual loans that are current
Nonaccrual loans that are current
Financing Receivable, Excluding Accrued Interest, Nonaccrual
Award Type
Award Type [Axis]
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Due in one year or less
Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, Year One
Savings and money market
Deposits, Savings and Money Market
Deposits, Savings and Money Market
Trading Symbol
Trading Symbol
2029
Lessee, Operating Lease, Liability, to be Paid, Year Four
Due after five years through ten years
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year 5 Through 10
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year 5 Through 10
Due after ten years
Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 10
Net activity under employee plans and related tax benefits (in shares)
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture
Entity Address, City or Town
Entity Address, City or Town
Utah
UTAH
Weighted average discount rate, finance leases
Finance Lease, Weighted Average Discount Rate, Percent
Marketable Securities [Line Items]
Marketable Securities [Line Items]
Class of Financing Receivable [Axis]
Class of Financing Receivable [Axis]
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
Construction and other consumer real estate
Construction And Other Consumer Real Estate [Member]
Construction And Other Consumer Real Estate [Member]
Net change in short-term borrowed funds
Proceeds from (Repayments of) Short-Term Debt
Credit-related expense
Credit And Collection Services
Credit and collection services.
Restricted stock and restricted stock units
Restricted Stock Units (RSUs) [Member]
Allowance for Credit Losses
Credit Loss, Financial Instrument [Policy Text Block]
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Entity Emerging Growth Company
Entity Emerging Growth Company
Weighted average remaining lease term, finance leases
Finance Lease, Weighted Average Remaining Lease Term
Total allowance for credit losses
Financing Receivable And Off Balance Sheet Liability, Allowance For Credit Loss
Financing Receivable And Off Balance Sheet Liability, Allowance For Credit Loss
Due after one year through five years
Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year One Through Five
Derivatives (included in Other liabilities)
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]
Total income statement impact
Derivative, Gain (Loss) on Derivative, Net
Total noninterest income
Total noninterest income
Noninterest Income
Common stock, outstanding shares (in shares)
Balance at beginning of period (in shares)
Balance at end of period (in shares)
Common Stock, Shares, Outstanding
Available-for-sale, Unrealized Gains, Other
Available-for-sale, Unrealized Gains, Other [Member]
Available-for-sale, Unrealized Gains, Other
Held-to-maturity
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss
Other assets
Other Assets, Fair Value Disclosure
Noninterest expense:
Noninterest Expense [Abstract]
Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Cash and due from banks
Cash and Due from Banks
Class of Financing Receivable [Domain]
Class of Financing Receivable [Domain]
90+ days past due
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing
Total income from loans sold
Gain (Loss) on Sale of Financing Receivable
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Weighted-average interest rate reduction (in percentage points)
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification
Pledged Status [Domain]
Pledged Status [Domain]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Restatement Determination Date
Restatement Determination Date
Income taxes
Less: Income tax expense (benefit)
Income Tax Expense (Benefit)
Other assets
Other Assets
Fair value of assets, beginning balance
Fair value of assets, ending balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Document Information [Line Items]
Document Information [Line Items]
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Derivatives designated as accounting hedges:
Designated as Hedging Instrument [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Offsetting [Abstract]
Terminated or redesignated, unamortized basis adjustments, debt
Terminated And Redesignated Swaps, Unamortized Basis Adjustments, Debt
Terminated And Redesignated Swaps, Unamortized Basis Adjustments, Debt
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Liabilities for Guarantees on Long-Duration Contracts [Table]
Liabilities for Guarantees on Long-Duration Contracts [Table]
Gross amounts offset on the balance sheet
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Amounts Offset [Abstract]
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Amounts Offset
Acquisition of California branches, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
All Trading Arrangements
All Trading Arrangements [Member]
Equity Awards Adjustments, Footnote
Equity Awards Adjustments, Footnote [Text Block]
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
Noncustomer-related noninterest income
Noninterest Income, Other Operating Income
Net cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Available-for-sale, at fair value
Available-for-sale
Debt Securities, Available-for-Sale, Excluding Accrued Interest
Cost of investments sold
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Net interest income
Net interest income
Interest Income (Expense), Operating
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
Retail and business banking fees
Products And Services, Retail And Business Banking Fees [Member]
Products And Services, Retail And Business Banking Fees
PEO Total Compensation Amount
PEO Total Compensation Amount
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Derivatives (included in Other liabilities)
Derivative liability
Other liabilities
Derivative Liability, Subject to Master Netting Arrangement, before Offset
Number of civil cases
Number of Civil Cases
Number of Civil Cases
Equity Components [Axis]
Equity Components [Axis]
2022
2021
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year
Financial
Standby Letters of Credit [Member]
Commercial account fees
Commercial account fees
Commercial account fees
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Interest on securities
Investment Income, Debt Securities Excluding Trading Securities, Operating
Investment Income, Debt Securities Excluding Trading Securities, Operating
Washington
WASHINGTON
Entity Address, State or Province
Entity Address, State or Province
Total interest income
Interest and Dividend Income, Operating
Undistributed earnings applicable to common shares
Undistributed Earnings (Loss) Available to Common Shareholders, Diluted
Special Mention
Special Mention [Member]
Financing Receivables, Period Past Due [Domain]
Financial Asset, Aging [Domain]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Antidilutive Security, Excluded EPS Calculation [Table]
Individual:
Individual [Axis]
Deferred compensation plan assets
Warranty, Rights and Obligations, Fair Value Option [Member]
Hedges of fixed-rate liabilities
Hedges Of Fixed-Rate Liabilities [Member]
Hedges Of Fixed-Rate Liabilities
Net decrease (increase) in loans held for sale
Increase (Decrease) in Loan, Held-for-Sale
Principal forgiveness
Principal Forgiveness [Member]
Gross amounts recognized
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Gross [Abstract]
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Gross
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
Wyoming
WYOMING
LEASES
Lessor, Sales-type Leases [Text Block]
Entity Interactive Data Current
Entity Interactive Data Current
Gross charge-offs by year of loan origination
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Change in other liabilities
Increase (Decrease) in Operating Liabilities
Available-for-sale
Interest Income, Debt Securities, Available-for-Sale, Operating
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified [Line Items]
Home equity credit line
Home Equity Line of Credit [Member]
Interest income:
Interest and Dividend Income, Operating [Abstract]
Federal funds sold and securities purchased under agreements to resell
Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset
Nonaccrual
Nonaccrual [Member]
Nonaccrual
Total noninterest expense
Noninterest Expense
Due after one year through five years
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year One Through Five
Payment deferral
Payment Deferral [Member]
Interest on deposits
Interest Expense, Deposits
Noninterest income:
Noninterest Income [Abstract]
Interest on fair value hedges
Other Noninterest Income/(Expense)
Derivative Instrument, Noninterest Income (Expense)
Derivative instrument noninterest income (expense)
Entity Central Index Key
Entity Central Index Key
Due after ten years
Debt Securities, Weighted Average Yield, Maturity, After Year 10
Debt Securities, Weighted Average Yield, Maturity, After Year 10
PEO Name
PEO Name
Total customer-related noninterest income
Revenues
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other noninterest income
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Noninterest Income
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Noninterest Income
Summary of Outstanding Loan Balances (Accruing and Nonaccruing) Categorized by Credit Quality Indicators
Financing Receivable Credit Quality Indicators [Table Text Block]
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Schedule of Investment Securities
Summary of Investment Securities [Table Text Block]
Summary of Investment Securities [Table Text Block]
Number of branches
Number of Branches
Number of Branches
Noninterest-bearing demand
Noninterest-Bearing Deposit Liabilities
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Office building
Office Building [Member]
Net change in other
Other Comprehensive Income (Loss), Other, Gain (Loss), Reclassification, after Tax
Other Comprehensive Income (Loss), Other, Gain (Loss), Reclassification, after Tax
Schedule of Derivative Amounts
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Total assets
Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed
Number of bank operating segments
Number Of Bank Operating Segments
Number Of Bank Operating Segments
Exercise Price
Award Exercise Price
Entity Filer Category
Entity Filer Category
Class of Stock [Domain]
Class of Stock [Domain]
Hedges of floating-rate liabilities
Hedges Of Floating-Rate Liabilities [Member]
Hedges Of Floating-Rate Liabilities
Commitments, Guarantees, and Contingent Liabilities [Abstract]
Guarantees, Commitments And Contingencies [Abstract]
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)
Balance Sheet Location [Axis]
Statement of Financial Position Location, Balance [Axis]
Real estate acquired through foreclosure (prior year less than)
Real Estate Acquired Through Foreclosure
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]
Number of states in which entity operates
Number of States in which Entity Operates
Entity Address, Address Line One
Entity Address, Address Line One
Trading securities
Trading Securities [Member]
Trading Securities
Accumulated other comprehensive income (loss)
Total
AOCI Attributable to Parent [Member]
Securities sold, not yet purchased
Financial Instruments Sold, Not yet Purchased, at Fair Value
Preferred stock dividends
Other Preferred Stock Dividends and Adjustments
Standby letters of credit
Letters Of Credit Standby
Letters of credit standby.
Revolving loans converted to term loans gross charge-offs
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff
Internal Credit Assessment [Axis]
Internal Credit Assessment [Axis]
Reserve for unfunded lending commitments
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Internal Credit Assessment [Domain]
Internal Credit Assessment [Domain]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Other liabilities
Other Liabilities [Member]
Fair Value as of Grant Date
Award Grant Date Fair Value
Undistributed earnings
Undistributed Earnings, Basic
2021
2020
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year
Schedule of Lease Related Assets and Liabilities
Assets And Liabilities, Lessee [Table Text Block]
Assets And Liabilities, Lessee
Schedule of Long-term Debt
Schedule of Long-Term Debt Instruments [Table Text Block]
Salaries and employee benefits
Labor and Related Expense
Total assets
Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Liability Offset
Document Quarterly Report
Document Quarterly Report
Available-for-sale, less than 12 Months, estimated fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
Due after five years through ten years
Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 5 Through 10
Summary of Nonaccrual Loans
Financing Receivable, Nonaccrual [Table Text Block]
2027
Lessee, Operating Lease, Liability, to be Paid, Year Two
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Title
Trading Arrangement, Individual Title
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Non-PEO NEO
Non-PEO NEO [Member]
Noninterest income
Noninterest Income, Adjusted
Noninterest Income, Adjusted
Net decrease in money market investments
Payments for (Proceeds from) Short-Term Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Due after five years through ten years
Debt Securities, Weighted Average Yield, Maturity, After Year 5 Through 10
Debt Securities, Weighted Average Yield, Maturity, After Year 5 Through 10
Par value of hedged liabilities
Derivative Liability, Notional Amount
Available-for-sale
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Schedule of Offsetting Assets and Liabilities
Offsetting Assets [Table Text Block]
All Award Types
Award Type [Domain]
2026
Lessee, Operating Lease, Liability, to be Paid, Year One
Effective portion of derivative gain (loss) deferred in AOCI
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Zions Bank
Zions Bank Segment [Member]
Zions Bank Segment [Member]
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Other, net
Other Noncash Income (Expense)
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Compensation Amount
Outstanding Recovery Compensation Amount
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Foreign exchange derivatives
Foreign Exchange Contract [Member]
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Fair value
Estimate of Fair Value Measurement [Member]
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
Due after one year through five years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Small Business Administration loan-backed securities
Small Business Administration Loan Backed Securities [Member]
Small Business Administration Loan-Backed Securities [Member]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Past Due [Line Items]
Due after five years through ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Long-term debt
Total
Long-Term Debt and Lease Obligation
Dilutive effect of stock options (in shares)
Dilutive Effect of Stock Options
Dilutive Effect of Stock Options
Financial Instruments [Domain]
Financial Instruments [Domain]
Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
Net Investment Income [Line Items]
Net Investment Income [Line Items]
Net change in cash flow hedge derivatives
Amount of gain (loss) reclassified from AOCI into income
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
Pledging Purpose [Domain]
Pledging Purpose [Domain]
Derivatives (included in Other assets)
Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction
Net interest income after provision for credit losses
Interest Income (Expense), after Provision for Loan Loss
Company Selected Measure Name
Company Selected Measure Name
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Related cash disbursements for operating leases
Operating Lease, Payments
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Total earnings applicable to common shares
Total earnings applicable to common shares
Net Income (Loss) Available to Common Stockholders, Diluted
Collateral Held [Domain]
Collateral Held [Domain]
Diluted shares (in shares)
Weighted average diluted common shares outstanding (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Total liabilities
Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
CB&T
California Bank And Trust Segment [Member]
California Bank And Trust Segment [Member]
Derivative [Table]
Derivative [Table]
Money market investments:
Restricted Cash and Investments [Abstract]
Entity Small Business
Entity Small Business
Income Tax Disclosure [Abstract]
Series A Floating-Rate Non-Cumulative Perpetual Preferred Stock
Series A Floating-Rate Non-Cumulative Perpetual Preferred Stock [Member]
Series A Floating-Rate Non-Cumulative Perpetual Preferred Stock
Document Transition Report
Document Transition Report
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Due in one year or less
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, Year One
Capital markets fees and income
Products And Services, Capital Markets And Foreign Exchange Fees [Member]
Products And Services, Capital Markets And Foreign Exchange Fees
Underlying Securities
Award Underlying Securities Amount
Equity Component [Domain]
Equity Component [Domain]
Document Period End Date
Document Period End Date
Total available-for-sale
Debt Securities, Available For Sale, Excluding Accrued Interest [Member]
Debt Securities, Available For Sale, Excluding Accrued Interest
Subsequent Events
Subsequent Events, Policy [Policy Text Block]
INCOME TAXES
Income Tax Disclosure [Text Block]
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Total liabilities
Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Asset Offset
Total liabilities
Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset
Schedule of Interest Income by Security Type
Tax and Nontaxable Interest Income by Investment Type [Table Text Block]
[Table Text Block] for Tax and Nontaxable Interest Income by Investment Type [Table]
Hedges of floating-rate assets
Hedges Of Floating-Rate Assets [Member]
Hedges Of Floating-Rate Assets
Document Type
Document Type
Level 3
Fair Value, Inputs, Level 3 [Member]
NET EARNINGS PER COMMON SHARE
Earnings Per Share [Text Block]
Name
Outstanding Recovery, Individual Name
Marketable Securities [Table]
Marketable Securities [Table]
Product and Service [Axis]
Product and Service [Axis]
Revolving loans gross charge-offs
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff
Total noninterest income from contracts with customers
Revenue from Contract with Customer, Excluding Assessed Tax
Total investment securities
Gross Unrealized Gains of Investment Securities Recognized in OCI
Gross Unrealized Gains of Investment Securities Recognized in OCI
Loans sold from held for sale
Proceeds from Sale, Loan, Held-for-Sale
Investment Income [Table]
Investment Income [Table]
Range [Axis]
Statistical Measurement [Axis]
Retail and business banking fees
Retail and business banking fees
Retail and business banking fees
Total debt securities
Debt Securities, Held-to-Maturity, Maturity, Weighted Average Yield
Debt Securities, Held-to-Maturity, Maturity, Weighted Average Yield
2024
2023
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff
Ag loan servicing
Servicing Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Nonaccrual loans that are current
Financial Asset, 1 to 29 Days Past Due [Member]
Net credit valuation adjustment reducing fair value
Change In Fair Value Of Derivative Liability By Credit Value Adjustment
Change In Fair Value Of Derivative Liability By Credit Value Adjustment
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Net earnings applicable to common shareholders
Net Income (Loss) Available to Common Stockholders, Basic
Average yield
Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity [Abstract]
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Derivatives
Other Liabilities, Fair Value Disclosure
Schedule of Derivative Gains (Losses) Deferred in OCI or Recognized in Earnings
Derivative Instruments, Gain (Loss) [Table Text Block]
Customer-facing interest rate derivatives
Interest Rate Swaps For Customers [Member]
Interest Rate Swaps For Customers [Member]
Level 1
Fair Value, Inputs, Level 1 [Member]
Diluted (in dollars per share)
Net earnings per common share (in dollars per share)
Earnings Per Share, Diluted
Deposit insurance and regulatory expense
Federal Deposit Insurance Corporation Premium Expense
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Loan-related fees and income
Loan-related fees and income
The net gain or loss from the sale of loans, and related servicing income.
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amortized cost basis
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount
Dividends on preferred stock
Dividends, Preferred Stock, Cash
Financing receivable, held for sale
Financing Receivable, Held-for-Sale
Amegy
Amegy Corporation Segment [Member]
Amegy Corporation Segment [Member]
Consolidation Items [Domain]
Consolidation Items [Domain]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Maturity or term extension
Extended Maturity [Member]
Financing Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment [Axis]
Less imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Average yield
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity [Abstract]
Net cash paid for income taxes
Income Taxes Paid, Net
Municipal
Municipal [Member]
Municipal [Member]
Total debt securities
Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date
Gross unrealized losses
Debt Securities, Unrealized Loss [Abstract]
Debt Securities, Unrealized Loss
Total lease payments
Lessee, Operating Lease, Liability, to be Paid
Net change in unrealized gains on investment securities
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Premises, equipment and software, net
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Loans and leases, net of unearned income and fees
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss
Federal funds and other short-term borrowings
Securities Sold under Agreements to Repurchase
Expiration Date
Trading Arrangement Expiration Date
Total liabilities
Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Other Commitments [Domain]
Other Commitments [Domain]
Schedule of Rollforward of Level 3 Fair Value Measurements Including Realized Gains and Losses in the Income Statement
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]
Investment securities
Total investment securities
Debt Securities, Maturity, Allocated And Single Maturity Date, Amortized Cost
Debt Securities, Maturity, Allocated And Single Maturity Date, Amortized Cost
Allowance for credit loss on HTM securities (less than)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Multiple modification types
Multiple Modification Types [Member]
Multiple modification types
LONG-TERM DEBT AND SHAREHOLDERS' EQUITY
Debt And Stockholders' Equity Note Disclosure [Text Block]
Debt And Stockholders' Equity Note Disclosure
Entity Current Reporting Status
Entity Current Reporting Status
Receivables [Abstract]
Derivative [Line Items]
Derivative [Line Items]
Federal funds and other short-term borrowings
Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Collateral Held [Axis]
Collateral Held [Axis]
Due in one year or less
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
Derivatives (included in Other liabilities)
Derivative Liability, Subject to Master Netting Arrangement, after Offset
Financial Instrument [Axis]
Financial Instrument [Axis]
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract]
Statement of Financial Position [Abstract]
Executive Category:
Executive Category [Axis]
Available-for-sale, 12 Months or more
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Proceeds from the issuance of long-term debt
Proceeds from Issuance of Long-Term Debt
Current Fiscal Year End Date
Current Fiscal Year End Date
Available-for-sale, less than 12 Months
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Total deposits
Deposits
Summary of Major Portfolio Segment and Specific Loan Class
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Schedule of Off Balance Sheet Financial Instruments
Schedule of Guarantor Obligations [Table Text Block]
Professional and legal services
Professional Fees
Total average loans
Average Loans And Leases
Average loans and leases.
Other
Other Noninterest Expense
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Equity Awards Adjustments, Excluding Value Reported in Compensation Table
Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]
Pass
Pass [Member]
Loan Restructuring Modification [Axis]
Loan Restructuring Modification [Axis]
Wealth management fees
Products And Services, Wealth Management Fees [Member]
Products And Services, Wealth Management Fees
Available-for-sale, total
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Schedule of Assets and Liabilities Measured at Fair Value by Class on a Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Total
Financing Receivable, Modified, after 12 Months
Antidilutive securities excluded from computation of earnings per share (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Weighted average LTV
Loan-To-Value Ratio, Weighted Average
Loan-To-Value Ratio, Weighted Average
Weighted average common shares outstanding during the period:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Schedule of Held-to-maturity Securities [Line Items]
Schedule of Held-to-Maturity Securities [Line Items]
Summary of Past Due Loans (Accruing and Nonaccruing)
Financing Receivable, Past Due [Table Text Block]
LEASES
Lessee, Operating Leases [Text Block]
Net cash used in financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Measure:
Measure [Axis]
Number of branches leased
Number of Branches Leased
Number of Branches Leased
Financial liabilities:
Financial Liabilities Fair Value Disclosure [Abstract]
Consumer:
Consumer Portfolio Segment [Member]
Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Derivatives (included in Other assets)
Derivative Asset, Subject to Master Netting Arrangement, after Offset
Entity Tax Identification Number
Entity Tax Identification Number
2022
2021
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff
Derivatives
Derivative [Member]
Schedule of Anti-Dilutive Stock Awards
Schedule of Weighted Average Number of Shares [Table Text Block]
Common stock, shares issued (in shares)
Common Stock, Shares, Issued
Weighted average remaining lease term, operating leases
Operating Lease, Weighted Average Remaining Lease Term
Schedule of Gains (Losses) Recognized From Derivatives Not Designated as Accounting Hedges
Derivatives Not Designated as Hedging Instruments [Table Text Block]
Principal balance of loans sold, serviced loans
Principal Balance of Loans Sold, Serviced Loans
Principal Balance of Loans Sold, Serviced Loans
Federal funds sold and securities purchased under agreements to resell
Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset
Trading Arrangement:
Trading Arrangement [Axis]
Total Shareholder Return Amount
Total Shareholder Return Amount
Operating lease income
Operating Lease, Lease Income
Security Exchange Name
Security Exchange Name
Federal funds sold and securities purchased under agreements to resell
Securities Purchased under Agreements to Resell
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES
Financing Receivables [Text Block]
Pledging Purpose [Axis]
Pledging Purpose [Axis]
Bank common stock repurchased (in shares)
Stock Repurchased During Period, Shares
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain]
Asset Class [Domain]
Securities gains (losses), net
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Total assets
Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset
Statement [Line Items]
Statement [Line Items]
Carrying amount of hedged assets
Hedged Asset, Fair Value Hedge
Federal funds and other short-term borrowings
Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Unfunded lending commitments
Unused Commitments to Extend Credit
Common Stock, par value $0.001
Common stock shares (in thousands)
Common Stock [Member]
NSB
Nevada State Bank Segment [Member]
Nevada State Bank Segment [Member]
Hedges of fixed-rate assets
Hedges of Fixed-Rate Assets [Member]
Hedges of Fixed-Rate Assets
Net increase in cash and due from banks
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]
Federal funds sold and securities purchased under agreements to resell
Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Liability Offset
Dividends on common stock (in dollars per share)
Common Stock, Dividends, Per Share, Cash Paid
Range [Domain]
Statistical Measurement [Domain]
Related allowance
Financing Receivable, Excluding Accrued Interest, Nonaccrual, Related Allowance
Financing Receivable, Excluding Accrued Interest, Nonaccrual, Related Allowance
Summary of Collateral-Dependent Loans
Collateral-Dependent Loans [Table Text Block]
Collateral-Dependent Loans
Available-for-sale
Total debt securities
Investment securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss
2025
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
Interest income
Financing Receivable, Nonaccrual, Interest Income
Common stock ($0.001 par value; authorized 350,000 shares; issued and outstanding 147,640 and 147,871 shares) and additional paid-in capital
Common stock and additional paid in capital
Common Stocks, Including Additional Paid in Capital
Fair Value by Asset Class [Axis]
Asset Class [Axis]
Customer-related noninterest income from other sources
Revenue Not from Contract with Customer, Excluding Interest Income
Bankcard and other revolving plans
Bankcard And Other Revolving Plans [Member]
Bankcard And Other Revolving Plans [Member]
Leases [Abstract]
Basic:
Earnings Per Share, Basic [Abstract]
Amortized cost basis with no allowance
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance
Pledged Status [Axis]
Pledged Status [Axis]
Estimated fair value
Debt Securities, Fair Value [Abstract]
Debt Securities, Fair Value
Available-for-sale
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Sales-type or direct financing leases income
Sales-type and Direct Financing Leases, Profit (Loss)
Basic (in dollars per share)
Net earnings per common share (in dollars per share)
Earnings Per Share, Basic
LIABILITIES
Liabilities, Fair Value Disclosure [Abstract]
Federal funds sold and securities purchased under agreements to resell
Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, before Offset
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Net of Tax
Schedule of Segment Reporting Information, by Segment
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Held-to-maturity
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain
Derivatives
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments
Unrealized securities gains, net
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)
Total
Total
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff
Technology, telecom, and information processing
Communications and Information Technology
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Federal funds sold and securities purchased under agreements to resell
Security Purchased under Agreement to Resell, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Trading securities, at fair value
Trading securities
Debt Securities, Trading, and Equity Securities, FV-NI
Other comprehensive income before reclassifications, net of tax
OCI, before Reclassifications, Net of Tax, Attributable to Parent
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Line Items]
Hedging Designation [Domain]
Hedging Designation [Domain]
Accrued interest receivable
Financing Receivable, Accrued Interest, after Allowance for Credit Loss
Loans held for sale (includes $126 and $25 of loans carried at fair value)
Loans held for sale
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance
Total liabilities and shareholders’ equity
Liabilities and Equity
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Pension and post-retirement
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Derivative Instruments, Gain (Loss) [Table]
Derivative Instruments, Gain (Loss) [Table]
Amounts reclassified from AOCI, net of tax
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
Derivatives (included in Other assets)
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset
Accounting Policies [Abstract]
Federal funds and other short-term borrowings
Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Asset Offset
Revenue Recognition and Deferred Revenue [Abstract]
Schedule of Lease Maturity Analysis
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Total assets
Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset
2025
2024
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year
Pay vs Performance Disclosure [Line Items]
Gross amounts not offset in the balance sheet, Cash collateral received/ pledged
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Obligation to Return and Right to Reclaim Cash [Abstract]
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Obligation to Return and Right to Reclaim Cash
Lease liabilities
Total
Operating Lease, Liability
90+ days past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction
Taxable VS Nontaxable Income [Axis]
Taxable VS Nontaxable Income [Axis]
Taxable VS Nontaxable Income [Axis]
Modified, still in default (prior year approximately)
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default
Net loan and lease charge-offs (recoveries)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)
Agriculture loan servicing
Interest-Only-Strip [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Construction and land development
Construction And Land Development [Member]
Construction And Land Development [Member]
Loans and leases (including loans held for sale), net of allowance
Financing Receivable, After Allowance For Credit Loss And Held-For-Sale, Not Part of Disposal Group
Financing Receivable, After Allowance For Credit Loss And Held-For-Sale, Not Part of Disposal Group
2023
2022
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Company Selected Measure Amount
Company Selected Measure Amount
2028
Lessee, Operating Lease, Liability, to be Paid, Year Three
Cash
Cash
Prior
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Name
Measure Name
Retail facility
Retail Facility [Member]
Retail Facility
Net increase (decrease) in deposits
Increase (Decrease) in Deposits
Proceeds from sales, maturities, and paydowns of investment securities available-for-sale
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Net amount
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Amount Offset Against Collateral [Abstract]
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Amount Offset Against Collateral
Summary of Derivative Instruments by Hedge Designation [Abstract]
Summary of Derivative Instruments by Hedge Designation [Abstract]
Total average deposits
Average Deposits
Average deposits.
Long-term debt
Long-Term Debt
Total assets
Assets
4.70% Fixed-To-Floating Senior Notes
4.70% Fixed-To-Floating Senior Notes [Member]
4.70% Fixed-To-Floating Senior Notes
Geographical [Domain]
Geographical [Domain]
Bank-owned life insurance
Bank-owned life insurance [Member]
Bank-owned life insurance [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Capital markets fees and income
Capital Markets Fees
Capital Markets Fees
Private equity investments
Private equity investments
Private Equity Funds [Member]
Nontaxable
Nontaxable [Member]
Nontaxable [Member]
Interest on short- and long-term borrowings
Interest Expense, Borrowings
ASSETS
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity, Estimated fair value
Held-to-maturity investment securities
Debt Securities, Held-to-Maturity, Fair Value
Amortized cost
Debt Securities, Amortized Cost [Abstract]
Debt Securities, Amortized Cost
Other noninterest-bearing investments
Other Investments
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Level 2
Fair Value, Inputs, Level 2 [Member]
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Business Combination [Domain]
Business Combination [Domain]
Card fees
Products And Services, Card Fees [Member]
Products And Services, Card Fees
Marketing and business development
Marketing and Business Development Expense
Marketing and Business Development Expense
Asset Pledged as Collateral
Asset Pledged as Collateral [Member]
Total investment securities
Gross Unrealized Losses of Investment Securities Recognized in OCI
Gross Unrealized Losses of Investment Securities Recognized in OCI
Total investment securities
Debt Securities, Excluding Trading Securities
Debt Securities, Excluding Trading Securities
Summary of Derivative Instruments [Abstract]
Document Information [Table]
Document Information [Table]
PEO
PEO [Member]
Schedule of Contractual Maturities Debt Securities
Investments Classified by Contractual Maturity Date [Table Text Block]
Noncash activities:
Noncash Investing and Financing Items [Abstract]
Time
Time deposits
Time Deposits
Retained earnings
Retained Earnings [Member]
Purchases and sales of other noninterest-bearing investments
Net change in other noninterest-bearing investments
Net change in other noninterest-bearing investments
Total investment securities
Estimated Fair Value of Investment Securities
Estimated Fair Value of Investment Securities
Cash and due from banks at beginning of period
Cash and due from banks at end of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Income Statement [Abstract]
Available-for-sale, 12 months or more, estimated fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
Performance
Performance Guarantee [Member]
Fair Value, Nonrecurring
Fair Value, Nonrecurring [Member]
Other direct expenses
Other Direct Expenses
Other Direct Expenses
Investment securities, available-for-sale
Investments, Fair Value Disclosure
Schedule of Financing Receivable, Troubled Debt Restructurings [Table]
Financing Receivable, Modified [Table]
Provision for unfunded lending commitments
Provision for unfunded lending commitments
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)
Product and Service [Domain]
Product and Service [Domain]
Amortized cost basis with allowance
Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance
Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Total liabilities
Liabilities, Fair Value Disclosure
Notional amount
Derivative, Notional Amount
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revolving loans amortized cost basis
Financing Receivable, Excluding Accrued Interest, Revolving
Schedule of Basic and Diluted Earnings per Common Share
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block]
City Area Code
City Area Code
Summary of Changes in the Allowance for Credit Losses
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Net amounts presented on the balance sheet
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Net Amount [Abstract]
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Net Amount
Customer-related noninterest income
Noninterest income, Customer-related
Noninterest income, Customer-related
Interest on money market investments
Interest Income, Money Market Deposits
Loans held for investment reclassified to loans held for sale, net
Transfer Of Portfolio Loans And Leases To Held-For-Sale And Transfer Of Loans Held-For-Sale To Portfolio Loans, Net
Transfer Of Portfolio Loans And Leases To Held-For-Sale And Transfer Of Loans Held-For-Sale To Portfolio Loans, Net
CASH FLOWS FROM INVESTING ACTIVITIES
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Other expenses associated with operating leases
Operating Leases, Other Expenses
Operating Leases, Other Expenses
Total assets
Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, before Offset
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Accrued interest receivable
Interest Receivable
Fair Value Hedging
Fair Value Hedging [Member]
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain]
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain]
Total lease expense
Lease, Cost
Cash Flow Hedging
Cash Flow Hedging [Member]
Other liabilities
Other Liabilities
Schedule of Lease Expense
Lease, Cost [Table Text Block]
Due after five years through ten years
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 5 Through 10
Transfers out
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Other Performance Measure, Amount
Other Performance Measure, Amount
Less common and preferred dividends
Dividends
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Owner-occupied
Owner Occupied [Member]
Owner Occupied [Member]
Commercial real estate:
Commercial Real Estate Portfolio Segment [Member]
LEASES
Lessee, Finance Leases [Text Block]
Net unamortized purchase premiums, discounts, and deferred loan fees and cost
Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount)
Debt and Equity Securities, FV-NI [Line Items]
Investments [Abstract]
Net cash provided by investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Financing receivable, commitments threshold for evaluating individually
Financing Receivable, Excluding Accrued Interest, Commitment Threshold For Measuring Individually
Financing Receivable, Excluding Accrued Interest, Commitment Threshold For Measuring Individually
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]
Cash paid for interest
Interest Paid, Excluding Capitalized Interest, Operating Activity
Document Fiscal Year Focus
Document Fiscal Year Focus
Basis of Accounting
Basis of Accounting, Policy [Policy Text Block]
ROU assets, net of amortization
Operating Lease, Right-of-Use Asset
Effective income tax rate
Effective Income Tax Rate Reconciliation, Percent
Operating lease expense
Operating Lease, Cost
Carrying value
Reported Value Measurement [Member]
Senior notes
Senior Notes
Securities gains (losses), net
Debt and Equity Securities, Gain (Loss)
OPERATING SEGMENT INFORMATION
Segment Reporting Disclosure [Text Block]
Derivatives not designated as hedging instruments
Not Designated as Hedging Instrument [Member]
U.S. Treasury, agencies, and corporations
U.S. Treasury securities
US Treasury Securities [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Commercial letters of credit
Commercial Letters Of Credit
Commercial Letters Of Credit
Doubtful
Doubtful [Member]
Other debt securities
Other Debt Obligations [Member]
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Agency securities
Agency Securities [Member]
Bank common stock repurchased
Stock Repurchased During Period, Value
Schedule of Changes in Accumulated Other Comprehensive Income
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Other noninterest-bearing investments
Other Noninterest Bearing Investments Fair Value Disclosure
Other noninterest bearing investments fair value disclosure.
Finance lease obligations
Finance Lease, Liability
Arrangement Duration
Trading Arrangement Duration
Industrial building
Industrial Building [Member]
Industrial Building
Segments [Axis]
Segments [Axis]
Modified, principal forgiveness (current year approximately, prior year less than)
Financing Receivable, Excluding Accrued Interest, Modified in Period, Principal Amount Forgiven
Financing Receivable, Excluding Accrued Interest, Modified in Period, Principal Amount Forgiven
Local Phone Number
Local Phone Number
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Accrued interest receivable written off
Financing Receivable, Accrued Interest, Writeoff
Other, net
Payment for (Proceeds from) Other Investing Activity
Land Acquisition and Development
Land Acquisition And Development [Member]
Land Acquisition And Development
Unrealized loss amortization associated with the securities transferred from AFS to HTM
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax
Reserve for unfunded lending commitments
Balance at beginning of period
Balance at end of period
Off-Balance-Sheet, Credit Loss, Liability
Federal funds and other short-term borrowings
Federal Funds Purchased and Securities Sold under Agreements to Repurchase
ASSETS
Assets [Abstract]
Other interest rate derivatives
Other Contract [Member]
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Other Commitments [Axis]
Other Commitments [Axis]
Debt Instrument [Axis]
Debt Instrument [Axis]
FAIR VALUE
Fair Value Disclosures [Text Block]
Shareholders’ equity:
Equity, Attributable to Parent [Abstract]
Summary of TDRs (Accruing and Nonaccruing) Categorized by Loan Class and Modification Type
Financing Receivable, Modified [Table Text Block]
Other real estate expense, net
Other Revenue (Expense) from Real Estate Operations
Debt instrument stated interest rate
Debt Instrument, Interest Rate, Stated Percentage
Gross unrealized gains
Debt Securities, Unrealized Gain [Abstract]
Debt Securities, Unrealized Gain
Commercial account fees
Products And Services, Commercial Account Fees [Member]
Products And Services, Commercial Account Fees
Provision for credit losses:
Allowance for Credit Loss [Abstract]
Total provision for credit losses
Provision for credit losses
Provision for credit losses
Financing Receivable And Off Balance Sheet Liability, Credit Loss, Expense (Reversal)
Financing Receivable And Off Balance Sheet Liability, Credit Loss, Expense (Reversal)
COMMITMENTS, GUARANTEES AND CONTINGENT LIABILITIES
Commitments Contingencies and Guarantees [Text Block]
Derivatives (included in Other assets)
Other assets
Derivative Asset, Subject to Master Netting Arrangement, before Offset
Unfunded lending commitments on troubled debt restructuring
Financing Receivable, Modified, Commitment to Lend
Held-to-maturity
Interest Income, Debt Securities, Held-to-Maturity
Entity Registrant Name
Entity Registrant Name
Loss to be reclassified within the next 12 months into interest income
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Net gains from valuation adjustments of loans carried at fair value
Fair Value, Option, Credit Risk, Gains (Losses) on Assets
Card fees
Card fees
Card fees
Total assets
Total assets
Assets, Fair Value Disclosure
Other customer-related fees
Products And Services, Other Customer-Related Fees [Member]
Products And Services, Other Customer-Related Fees
Number of AFS investment securities in an unrealized loss position
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Deposits:
Deposits [Abstract]
Total past due
Financial Asset, Past Due [Member]
Amortized cost
Debt Securities, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Debt Securities, Maturity, Allocated and Single Maturity Date, Amortized Cost
Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction
Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction
Restatement Determination Date:
Restatement Determination Date [Axis]
Net activity under employee plans and related tax benefits
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Other, net
Proceeds from (Payment for) Other Financing Activity
Arizona
ARIZONA
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Reporting, Revenue Reconciling Item [Line Items]
Loans added to held for sale
Payment for Origination and Purchase, Loan, Held-for-Sale
Name
Trading Arrangement, Individual Name
Reconciliation of Revenue from Segments to Consolidated [Table]
Reconciliation of Revenue from Segments to Consolidated [Table]
Commercial and industrial
Commercial And Industrial [Member]
Commercial And Industrial [Member]
Loan, held for sale fair value
Loans held for sale
Loan, Held-for-Sale, Fair Value Disclosure
Debt instrument face amount
Debt Instrument, Face Amount
Other
Corporate Reconciling Items And Eliminations [Member]
Corporate Reconciling Items And Eliminations
Statement of Comprehensive Income [Abstract]
Preferred stock
Preferred Stock [Member]
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Deferred losses
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Federal funds and other short-term borrowings
Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Taxable VS Nontaxable Income [Domain]
Taxable VS Nontaxable Income [Domain]
[Domain] for Taxable VS Nontaxable Income [Axis]
Segments [Domain]
Segments [Domain]
Due in one year or less
Debt Securities, Weighted Average Yield, Maturity, Year One
Debt Securities, Weighted Average Yield, Maturity, Year One
INVESTMENT SECURITIES
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Balance Sheet Location [Domain]
Statement of Financial Position Location, Balance [Domain]
Accounting Standards Update and Change in Accounting Principle
Accounting Standards Update and Change in Accounting Principle [Table Text Block]
Net unrealized gains (losses) on investment securities
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Derivatives (included in Other assets)
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset
Interest expense:
Interest Expense, Operating and Nonoperating [Abstract]
Vectra
Vectra Bank Colorado Segment [Member]
Vectra Bank Colorado Segment [Member]
Total debt securities
Debt Securities, Maturity, Weighted Average Yield
Debt Securities, Maturity, Weighted Average Yield
Agency guaranteed mortgage-backed securities
Agency Guaranteed Mortgage Backed Securities [Member]
Agency Guaranteed Mortgage-Backed Securities [Member]
Due after ten years
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year 10
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year 10
Senior notes
Senior Notes [Member]
Derivatives (included in Other liabilities)
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset
Purchases of investment securities available-for-sale
Payments to Acquire Debt Securities, Available-for-Sale
Preferred stock, without par value; authorized 4,400 shares
Preferred Stock, Value, Issued
Municipal securities
US States and Political Subdivisions Debt Securities [Member]
Subordinated notes
Subordinated Debt
2024
2023
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year
Other customer-related fees
Other customer-related fees
Other customer-related fees
Financing Receivables, Period Past Due [Axis]
Financial Asset, Aging [Axis]
All Executive Categories
All Executive Categories [Member]
ROU assets, net of amortization
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Interest and fees on loans
Interest and fees on loans; Interest on short- and long-term borrowings
Interest and Fee Income, Loans and Leases
Distributed earnings applicable to common shares
Distributed Earnings
2025
2024
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff
Average yield
Debt Securities, Weighted Average Yield, Maturity [Abstract]
Debt Securities, Weighted Average Yield, Maturity
Business Combination [Axis]
Business Combination [Axis]
Investment securities:
Marketable Securities [Abstract]
Accruing Substandard
Accruing Substandard [Member]
Accruing Substandard
Mortgage loans in process of foreclosure
Mortgage Loans in Process of Foreclosure, Amount
RECENT ACCOUNTING PRONOUNCEMENTS
Accounting Standards Update and Change in Accounting Principle [Text Block]
Deferred tax assets
Deferred Tax Assets, Net
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Carrying amount of hedged liabilities
Hedged Liability, Fair Value Hedge
Diluted:
Earnings Per Share, Diluted [Abstract]
Gross amounts not offset in the balance sheet, Financial Instruments
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Obligation to Return and Right to Reclaim Securities [Abstract]
Securities Sold under Agreements to Repurchase and Purchased under Agreements to Resell, Obligation to Return and Right to Reclaim Securities
Hedging Designation [Axis]
Hedging Designation [Axis]
California
CALIFORNIA
Derivative Contract [Domain]
Derivative Contract [Domain]
Schedule of Financing Receivable, Allowance for Credit Losses [Table]
Financing Receivable, Allowance for Credit Loss [Table]
Proceeds from the issuance of common stock
Proceeds from Issuance of Common Stock
Due after ten years
Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10
Amount of hedging
Derivative, Amount of Hedged Item
All Individuals
All Individuals [Member]
Long-Term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Fair Value Disclosures [Abstract]
Purchases of premises and equipment
Payments to Acquire Property, Plant, and Equipment
Name
Forgone Recovery, Individual Name
FirstBank Coachella Valley Branches
FirstBank Coachella Valley Branches [Member]
FirstBank Coachella Valley Branches
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]
Amounts reclassified from AOCI
Reclassification out of Accumulated Other Comprehensive Income [Member]
Securities Sold under Agreements to Repurchase
Securities Sold under Agreements to Repurchase [Member]
Amortized cost
Financing Receivable, Individually Evaluated for Credit Loss
Collateral Dependent Loans
Collateral Dependent Loans [Member]
Collateral Dependent Loans
Due after one year through five years
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year One Through Five
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year One Through Five
Other debt securities
Available-for-sale, Other debt securities [Member]
Available-for-sale, Other debt securities [Member]
Amortized cost
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
2021
2020
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff
Debt Securities, Held-to-maturity [Table]
Debt Securities, Held-to-Maturity [Table]
Total liabilities
Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned
Schedule of Basis Adjustments for Hedged Items
Schedule of Derivative Instruments [Table Text Block]
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
Indirect/allocated expenses
Noninterest Expense, Indirect And Allocated Expenses
Noninterest Expense, Indirect And Allocated Expenses
Geographical [Axis]
Geographical [Axis]
Schedule of Fair Value Hedges
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
Commercial:
Commercial Portfolio Segment [Member]
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
Colorado
COLORADO
LEASES
Lessor, Operating Leases [Text Block]
Other
Other Consumer Loans [Member]
Other Consumer Loans
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Title of 12(b) Security
Title of 12(b) Security
Provision for loan and lease losses
Provision for loan losses
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal)
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table]
Idaho
IDAHO
Net earnings per common share:
Earnings Per Share [Abstract]
2023
2022
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff
Debt Instrument [Line Items]
Debt And Equity [Abstract]
Debt And Equity
Change in deferred compensation
Stockholders' Equity, Change In Deferred Compensation
Stockholders' Equity, Change In Deferred Compensation
Fed funds and other short-term borrowings:
Fed Funds And Other Short-Term Borrowings [Abstract]
Fed Funds And Other Short-Term Borrowings
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Loss [Line Items]
Award Timing Disclosures [Line Items]
Measurement Frequency [Domain]
Measurement Frequency [Domain]
Deposits acquired in purchase of California branches (at time of purchase)
Noncash Or Part Noncash Acquisition, Deposits Acquired
Noncash Or Part Noncash Acquisition, Deposits Acquired
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table]
Federal funds and other short-term borrowings
Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, before Offset
Hedged items
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge
Loan Restructuring Modification [Domain]
Loan Restructuring Modification [Domain]
Loans held for investment, net of allowance
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss
Net income
Net income for the period
Net income
Net Income (Loss) Attributable to Parent
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Preferred stock, shares authorized (in shares)
Preferred Stock, Shares Authorized
Bank common stock repurchased
Payments for Repurchase of Common Stock
Adoption Date
Trading Arrangement Adoption Date
Schedule of Financing Receivables Past Due [Table]
Financing Receivable, Past Due [Table]
TCBW
Commerce Bank Of Washington Segment [Member]
The Commerce Bank of Washington Segment [Member]
Schedule of Offsetting Assets and Liabilities
Offsetting Liabilities [Table Text Block]
Retained earnings
Retained Earnings (Accumulated Deficit)
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]
Purchases of investment securities held-to-maturity
Payments to Acquire Held-to-Maturity Securities
Class of Stock [Axis]
Class of Stock [Axis]
Multifamily apartments
Multifamily Apartments [Member]
Multifamily Apartments
Net unrealized gains (losses) on derivatives and other
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Total liabilities
Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, before Offset
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]
Statement [Table]
Statement [Table]
Deferred income tax expense
Deferred Income Tax Expense (Benefit)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Loans Held For Sale
Loans Held For Sale [Table Text Block]
Loans Held For Sale
BASIS OF PRESENTATION
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Net increase in trading securities
Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI
Schedule of Assets and Liabilities Measured at Fair Value by Class on a Recurring Basis Using Level 3 Inputs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Interest rate reduction
Contractual Interest Rate Reduction [Member]
Amendment Flag
Amendment Flag
Total assets
Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Taxable
Taxable [Member]
Taxable [Member]
Termination Date
Trading Arrangement Termination Date
Interest-bearing deposits
Interest-Bearing Deposits in Banks and Other Financial Institutions
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Allowance for loan and lease losses
Balance at beginning of period
Balance at end of period
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest
Due in one year or less
Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One
Weighted average discount rate, operating leases
Operating Lease, Weighted Average Discount Rate, Percent
Basic shares (in shares)
Weighted average common shares outstanding (in shares)
Weighted average common shares outstanding (in shares)
Weighted Average Number of Shares Outstanding, Basic
Wealth management fees
Wealth Management Fees
Wealth Management Fees
Segment Reporting [Abstract]
Thereafter
Lessee, Operating Lease, Liability, To Be Paid, After Year Four
Lessee, Operating Lease, Liability, To Be Paid, After Year Four
Available-for-sale, realized gain (loss)
Debt Securities, Available-for-Sale, Realized Gain (Loss)
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Loans held for sale
Financing Receivable, Held-For-Sale [Member]
Financing Receivable, Held-For-Sale
LEASES
Lessor, Direct Financing Leases [Text Block]
Dividends paid on common and preferred stock
Payments of Dividends
Income tax expense included in other comprehensive income
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Occupancy and equipment, net
Occupancy, Net
Sales-type or direct financing leases
Sales-type and Direct Financing Leases, Lease Receivable
Derivatives (included in Other assets)
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset
Insider Trading Arrangements [Line Items]
Prior
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year
Current
Financial Asset, Not Past Due [Member]
NBAZ
National Bank Of Arizona Segment [Member]
National Bank of Arizona Segment [Member]
Total liabilities
Liabilities
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Financing receivable, commitments threshold for risk classification approach
Financing Receivable, Commitments Threshold For Risk Classification Approach
Financing Receivable, Commitments Threshold For Risk Classification Approach
Term
Term [Member]
Term [Member]
Percentage of total loans
Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage
Dividends and other income
Investment Income, Net
Due in one year or less
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, Year One
Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, Year One
Fixed-Rate Available For Sale Securities
Fixed-Rate Available For Sale Securities [Member]
Fixed-Rate Available For Sale Securities
Pension Adjustments Prior Service Cost
Pension Adjustments Prior Service Cost [Member]
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
Due after one year through five years
Debt Securities, Weighted Average Yield, Maturity, After Year One Through Five
Debt Securities, Weighted Average Yield, Maturity, After Year One Through Five
Other real estate owned
Other Real Estate, Foreclosed Assets, and Repossessed Assets
Derivatives (included in Other liabilities)
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset
Consolidation Items [Axis]
Consolidation Items [Axis]
Purchased credit derivatives
Purchased Credit Derivative [Member]
Purchased Credit Derivative
Proceeds from maturities and paydowns of investment securities held-to-maturity
Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities
Deferred compensation plan assets
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]
Held-to-maturity, at amortized cost (fair value: $9,106 and $9,382)
Held-to-maturity
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Non-NEOs
Non-NEOs [Member]
Net change in loans and leases
Payments for (Proceeds from) Other Loans and Leases