XML 58 R47.htm IDEA: XBRL DOCUMENT v3.25.3

Note 3 - Loans Receivable - Restructurings of Financing Receivables (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($)
Restructured amount	$ 7,296
Number restructured	2
Performing Financial Instruments [Member]
Restructured amount	$ 7,296
Number restructured	2
Nonperforming Financial Instruments [Member]
Restructured amount	$ 0
Number restructured	0
Payment Deferral [Member]
Restructured amount	$ 7,296
Number restructured	2
Payment Deferral [Member] | Performing Financial Instruments [Member]
Restructured amount	$ 7,296
Number restructured	2
Payment Deferral [Member] | Nonperforming Financial Instruments [Member]
Restructured amount	$ 0
Number restructured	0
Commercial Real Estate Portfolio Segment [Member]
Restructured amount	$ 6,706
Number restructured	1
Residential Portfolio Segment [Member] | One to Four Family [Member]
Restructured amount	$ 590
Number restructured	1
Accruing [Member]
Restructured amount	$ 6,706
Number restructured	1
Accruing [Member] | Commercial Real Estate Portfolio Segment [Member]
Restructured amount	$ 6,706
Number restructured	1
Accruing [Member] | Residential Portfolio Segment [Member] | One to Four Family [Member]
Restructured amount	$ 0
Number restructured	0
Non Accruing [Member]
Restructured amount	$ 590
Number restructured	1
Non Accruing [Member] | Commercial Real Estate Portfolio Segment [Member]
Restructured amount	$ 0
Number restructured	0
Non Accruing [Member] | Residential Portfolio Segment [Member] | One to Four Family [Member]
Restructured amount	$ 590
Number restructured	1

X

- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-33

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

No definition available.

+ Details

Name:	wsbf_FinancingReceivableModifiedNumberOfContracts
Namespace Prefix:	wsbf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wsbf_OneToFourFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=wsbf_AccruingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=wsbf_NonAccruingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: