XML 86 R73.htm IDEA: XBRL DOCUMENT v3.24.0.1

Note 4 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Gross	$ 2,433,015	$ 2,218,852	$ 1,754,175
Commercial Real Estate [Member]
Financing Receivable, Gross	5,787
Residential Real Estate [Member]
Financing Receivable, Gross	269	966
Other Nonreal Estate [Member]
Financing Receivable, Gross	4,888	7,677
Collateral Dependent Loans [Member]
Financing Receivable, Gross	10,944	8,643
Real Estate Portfolio Segment [Member]
Financing Receivable, Gross	1,530,381	1,421,260	1,090,303
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	5,787
Real Estate Portfolio Segment [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	269	966
Real Estate Portfolio Segment [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	6,056	966
Real Estate Portfolio Segment [Member] | Commercial Loan [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	1,088
Real Estate Portfolio Segment [Member] | Commercial Loan [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | Commercial Loan [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | Commercial Loan [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	1,088	0
Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Gross	303,054	342,591
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	4,699
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	4,699	0
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Gross	69,488	55,387
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	0
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	173	46
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	173	46
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Gross	567,742	469,485
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	0
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	96	920
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	0	0
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	96	920
Consumer Portfolio Segment [Member]
Financing Receivable, Gross	646,753	569,572	422,043
Consumer Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	0
Consumer Portfolio Segment [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	0	0
Consumer Portfolio Segment [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	2,205	1,343
Consumer Portfolio Segment [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	2,205	1,343
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Gross	569,903	495,941
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	0
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	0	0
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	1,863	1,076
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	1,863	1,076
Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Gross	73,310	70,567
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	0
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	0	0
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	342	267
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	342	267
Commercial Business Portfolio Segment [Member]
Financing Receivable, Gross	255,881	228,020	$ 241,829
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable, Gross	238,301	196,791
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	0
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Residential Real Estate [Member]
Financing Receivable, Gross	0	0
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Other Nonreal Estate [Member]
Financing Receivable, Gross	2,683	6,334
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Collateral Dependent Loans [Member]
Financing Receivable, Gross	$ 2,683	$ 6,334

X

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-80

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (1)
-Publisher SEC

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)
-Publisher SEC

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1404
-Paragraph (a)
-Publisher SEC

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-SubTopic 10
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_NotesReceivableGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_CollateralAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CollateralAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CollateralAxis=fsbw_OtherNonrealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CollateralAxis=fsbw_CollateralDependentLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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