XML 68 R57.htm IDEA: XBRL DOCUMENT
v3.25.2

Note 8 - Commitments, Off-balance Sheet Arrangements, and Contingent Liabilities - Financial Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Commitments To Extend Credit Under Amortizing Loans [Member] |  |  |
Off-balance sheet risks liability amount | [1] | $ 44,026 | $ 19,052
Commitments To Extend Credit Under Home Equity Lines Of Credit [Member] |  |  |
Off-balance sheet risks liability amount | [2] | 11,075 | 11,531
Unused Portion of Construction Loans [Member] |  |  |
Off-balance sheet risks liability amount | [3] | 53,074 | 72,753
Unused lines of Credit [Member] |  |  |
Off-balance sheet risks liability amount |  | 12,084 | 15,061
Standby Letters of Credit [Member] |  |  |
Off-balance sheet risks liability amount |  | $ 1,991 | $ 399
[1] | Commitments for loans are extended to customers for up to 90 days after which they expire. Excludes commitments to originate loans held for sale, which are discussed in the following footnote.
[2] | Unused portions of home equity loans are available to the borrower for up to 10 years.
[3] | Unused portions of construction loans are available to the borrower for up to one year.

X
- Definition The fair value of financial assets, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=wsbf_CommitmentsToExtendCreditUnderAmortizingLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=wsbf_CommitmentsToExtendCreditUnderHomeEquityLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=wsbf_UnusedPortionOfConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_UnusedLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |