XML 58 R43.htm IDEA: XBRL DOCUMENT
v3.25.1

Note 11 - Debt (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Notes Tables |
Schedule of Debt [Table Text Block] |
|  | December 31, |
|  | 2024 |  |  | 2023 |
Federal Home Loan Bank - (interest rates ranging from 4.45% to 4.92% and 2.00% to 2.37% at December 31, 2024 and 2023, respectively) |  | $ | 299,806 |  |  | $ | 3,896 |
FRB - Fed funds - (interest rate of 4.33% at December 31, 2024) |  |  | 8,000 |  |  |  | — |
FRB - Bank Term Funding Program (“BTFP”) advance - (interest rate of 4.70% at December 31, 2023) |  |  | — |  |  |  | 89,850 |
Total |  | $ | 307,806 |  |  | $ | 93,746 |
Schedule of Maturities of Long-Term Debt [Table Text Block] |
Years Ending December 31, |  | Balances |  |  | Interest Rates |
2025 |  | $ | 259,000 |  |  |  | 4.60 | %
2026 |  |  | 48,806 |  |  |  | 4.79 | %
Total |  | $ | 307,806 |  |  |  | 4.63 | %
Schedule of Maximum and Weighted Average Balances and Interest Rates on Debt [Table Text Block] |
|  | For the Year Ending December 31, |
Maximum balance: |  | 2024 |  |  | 2023 |  |  | 2022 |
FHLB advances and Fed Funds |  |  | $299,805 |  |  |  | $74,895 |  |  |  | $260,828 |
FRB Fed Funds |  |  | 41,000 |  |  |  | — |  |  |  | — |
Fed Funds lines of credit with other financial institutions |  |  | 3,963 |  |  |  | — |  |  |  | — |
Subordinated notes |  |  | 50,000 |  |  |  | 50,000 |  |  |  | 50,000 |
FRB BTFP advance |  |  | 89,850 |  |  |  | 90,000 |  |  |  | — |
Average balance: |  |  |  |  |  |  |  |  |  |  |  |
FHLB advances and Fed Funds |  |  | 122,015 |  |  |  | 33,945 |  |  |  | 102,008 |
FRB Fed Funds |  |  | 1,705 |  |  |  | 14,704 |  |  |  | 548 |
Fed Funds lines of credit with other financial institutions |  |  | 11 |  |  |  | 11 |  |  |  | 15 |
Subordinated notes |  |  | 50,000 |  |  |  | 50,000 |  |  |  | 50,000 |
FRB BTFP advance |  |  | 30,195 |  |  |  | 61,669 |  |  |  | — |
Weighted average interest rates |  |  |  |  |  |  |  |  |  |  |  |
FHLB advances and Fed Funds |  |  | 5.03 | % |  |  | 4.40 | % |  |  | 2.98 | %
FRB Fed Funds |  |  | 5.56 | % |  |  | 5.42 | % |  |  | 1.69 | %
Fed Funds lines of credit with other financial institutions |  |  | 5.88 | % |  |  | 5.62 | % |  |  | 3.28 | %
Subordinated notes |  |  | 3.88 | % |  |  | 3.88 | % |  |  | 3.75 | %
FRB BTFP advance |  |  | 4.70 | % |  |  | 4.71 | % |  |  | — | %

X
- Definition Tabular disclosure of maximum and weighted average balances and interest rates on debt. + References No definition available. + Details
Name: | fsbw_ScheduleOfMaximumAndWeightedAverageBalancesAndInterestRatesOnDebtTableTextBlock
Namespace Prefix: | fsbw_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturity and sinking fund requirement for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 470 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-1 + Details
Name: | us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration