SBA Obligations, Secured Fund

No definition available.

Name:	newt_SBAObligationsSecuredFund
Namespace Prefix:	newt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-4

+ Details

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=newt_SPVCapitalOneFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_PaymentGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=newt_SPVDeutscheBankFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=newt_SPVOneFloridaBankFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=newt_WebsterFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=newt_NewtekBusinessLendingLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=newt_NewtekMerchantSolutionsLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

NEWTEKONE, INC. - PARENT COMPANY ONLY - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2024	Apr. 27, 2023
Other Commitments [Line Items]
Funded account	$ 10.0
NBL Capital One Facility \| Line of Credit \| Payment guarantee
Other Commitments [Line Items]
Guaranty liabilities	21.3
NBL Deutsche Bank Facility \| Line of Credit \| Payment guarantee
Other Commitments [Line Items]
Guaranty liabilities	54.8
NBL One Florida Bank Facility \| Line of Credit \| Payment guarantee
Other Commitments [Line Items]
Guaranty liabilities	23.1
Webster Facility \| Line of Credit \| Payment guarantee
Other Commitments [Line Items]
Guaranty liabilities	32.7
Newtek Business Lending, LLC \| NBL Capital One Facility \| Line of Credit
Other Commitments [Line Items]
Maximum borrowing capacity	60.0
Newtek Business Lending, LLC \| NBL Deutsche Bank Facility \| Line of Credit
Other Commitments [Line Items]
Maximum borrowing capacity	120.0
Newtek Business Lending, LLC \| NBL One Florida Bank Facility \| Line of Credit
Other Commitments [Line Items]
Maximum borrowing capacity	30.0	$ 30.0
Newtek Merchant Solutions, LLC \| Webster Facility \| Line of Credit
Other Commitments [Line Items]
Maximum borrowing capacity	$ 54.9