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[Member] Tier 1 capital (to risk-weighted assets), To be well capitalized, Amount Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Investment securities and derivative fair value adjustments Deferred Tax Assets Security Investments And Derivative Fair Value Adjustments Deferred tax assets security investments and derivative fair value adjustments. Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Highest month-end balance Short-Term Debt, Maximum Month-end Outstanding 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] Preferred stock dividend rate basis spread on variable rate Preferred Stock, Dividend Payment Rate, Basis Spread On Variable Rate Preferred Stock, Dividend Payment Rate, Basis Spread On Variable Rate Weighted-average term extension (in months) Financing Receivable, Modified, Weighted Average Term Increase from Modification Entity Shell Company Entity Shell Company Tier 1 capital (to average assets), Actual Ratio Tier 1 leverage ration (Tier 1 risk-based capital), Capital ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Interest and fees on loans Interest And Fee Income, Loans And Leases And Interest Expense, Borrowings Interest And Fee Income, Loans And Leases And Interest Expense, Borrowings Revolving loans converted to term loans amortized cost basis Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] 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] Operating Segments Operating Segments [Member] Schedule of Income Taxes Paid, Net Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Nondeductible FDIC premium expense Effective Income Tax Rate Reconciliation, Nondeductible Expense, FDIC Premium Expense, Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, FDIC Premium Expense, Percent Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Short-term Debt [Abstract] Short-Term Debt [Abstract] 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 Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Axis] Exercise Price Range [Axis] Average amount outstanding Short-Term Debt, Average Outstanding Amount Texas TEXAS Income before income taxes Income (loss) before taxes Income (Loss) from Continuing Operations before Income Taxes, Domestic Nontaxable or nondeductible items: Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract] 1-4 family residential One Through Four Family Residential [Member] One through four Family Residential [Member] Software Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Goodwill and intangibles Goodwill and intangibles Intangible Assets, Net (Including Goodwill) Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] 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] Total amortized cost basis Nonaccrual loans that are current Financing Receivable, Excluding Accrued Interest, Nonaccrual Furniture and Equipment Furniture and Fixtures [Member] Award Type [Axis] 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 Share-based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Business Combinations Business Combination [Policy Text Block] 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 Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Utah UTAH 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] Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance 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 funds borrowed Proceeds from (Repayments of) Short-Term Debt Credit-related expense Credit And Collection Services Credit and collection services. Restricted Stock Units Restricted Stock Units (RSUs) [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Common equity tier 1 capital (to risk-weighted assets), Capital Ratio CETI to risk-weighted assets, Capital ratio Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual 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 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from Modification Number of shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] 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 benefit Total Income Tax Expense (Benefit) Annual floating rate basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Other assets Other Assets Balance at beginning of year Balance at end of year Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Document Information [Line Items] Document Information [Line Items] Thereafter Time Deposit Maturities, after Year Five Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Derivatives designated as hedging instruments Derivatives designated as hedges Designated as Hedging Instrument [Member] Security resell agreements average amount Security Resell Agreements Average Amount Security Resell Agreements Average Amount Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Offsetting [Abstract] Earliest redemption date Preferred Stock, Redemption Date Total risk-based capital (Tier 1 capital plus Tier 2 capital) to risk-weighted assets, Capital conversion buffer Banking Regulation, Capital Conservation Buffer, Total Risk-Based Capital, Actual Nonaccruing loan threshold for evaluating individually Financing Receivable, Excluding Accrued Interest, Nonaccruing Loan Threshold For Evaluating Individually Financing Receivable, Excluding Accrued Interest, Nonaccruing Loan Threshold For Evaluating Individually Defined contribution plan, employer discretionary contribution amount Defined Contribution Plan, Employer Discretionary Contribution Amount Guarantor Obligation [Table] Guarantor Obligation [Table] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Financing receivable, commitments threshold for evaluating collectively or individually Financing Receivable, Commitments Threshold For Evaluating Collectively Or Individually Financing Receivable, Commitments Threshold For Evaluating Collectively Or Individually Cash received from the exercise of stock options Proceeds from Stock Options Exercised 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 Less accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Acquisition of California branches, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Federal Income Tax Paid, Federal, after Refund Received 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] Capitalized costs Deferred Tax Assets, Goodwill and Intangible Assets Tax-exempt interest Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Commitments and Guarantees Commitments and Contingencies, Policy [Policy Text Block] Other adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Gross deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Noncustomer-related noninterest income Noninterest Income, Other Operating Income Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, 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And Business Banking Fees [Member] Products And Services, Retail And Business Banking Fees PEO Total Compensation Amount PEO Total Compensation Amount Tier 1 capital (to risk-weighted assets), Actual Amount Banking Regulation, Tier 1 Risk-Based Capital, Actual Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] 2029 Finance Lease, Liability, to be Paid, Year Four Derivatives (included in Other liabilities) Derivative liability, fair value 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] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] 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 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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 Redemption of long-term debt Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current Leasehold improvements Leasehold Improvements, Gross Gross charge-offs 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] Revenue from Contract with Customer Revenue from Contract with Customer 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Outstanding, Number Investment Securities, Impairment Investment Securities, Impairment, Policy [Policy Text Block] Investment Securities, Impairment, Policy 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 Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] 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] 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 Summary 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 Total state State and Local Income Tax Expense (Benefit), Continuing Operations Defined Benefit Plan [Table] Defined Benefit Plan [Table] 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] Nontaxable or nondeductible items: Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount [Abstract] Net change in other Other Comprehensive Income (Loss), Other, Gain 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Hedges Of Floating-Rate Liabilities Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged assets Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Subordinated Borrowing [Line Items] Subordinated Borrowing [Line Items] Derivatives, Fair Value, by 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 Ratio of common stock to share based payment award (shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Ratio Of Common Stock To Share-Based Payment Award Share-Based Compensation Arrangement By Share-Based Payment Award, Ratio Of Common Stock To Share-Based Payment Award Common stock and additional paid-in capital increase Common Stock and Additional Paid-in Capital Change Common Stock and Additional Paid-in Capital Change Vesting Date Fair Value of Equity Awards Granted and 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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] Exercise price range, lower range limit (in dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit 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 Total obligations of trusts Deferred Compensation Liability, Current and Noncurrent Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Schedule of Long-Term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Salaries and employee benefits Labor and Related Expense Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Tier 1 leverage ration (Tier 1 risk-based capital) to average consolidated assets, Minimum capital requirement Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Relationship to Entity [Domain] Title and Position [Domain] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based 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