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Note 7 - Deposits - Schedule of Deposit Liabilities (Details) - USD ($)
$ in Thousands

Mar. 31, 2025

Dec. 31, 2024

Noninterest-bearing checking

$ 659,417

$ 627,679

Interest-bearing checking

^[1]

201,469

176,561

Savings

160,332

154,188

Money market

^[2]

343,349

341,615

Certificates of deposit less than $100,000

^[3]

639,947

440,257

Certificates of deposit of $100,000 through $250,000

450,836

455,594

Certificates of deposit greater than $250,000

142,512

133,045

Escrow accounts related to mortgages serviced

^[4]

17,289

10,479

Total deposits

$ 2,615,151

$ 2,339,418

[1]	Includes $30.1 million and no brokered deposits at March 31, 2025 and December 31, 2024, respectively.
[2]	Includes $251,000 and $279,000 of brokered deposits at March 31, 2025 and December 31, 2024, respectively.
[3]	Includes $339.9 million and $143.1 million of brokered deposits at March 31, 2025 and December 31, 2024, respectively.
[4]	Noninterest-bearing accounts.

X

- Definition

Amount of the escrow accounts related to mortgages serviced noninterest-bearing deposit liabilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	fsbw_
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X

- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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X

- Definition

Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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X

- Definition

Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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X

- Definition

Amount of interest-bearing domestic checking deposit liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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X

- Definition

Amount of noninterest-bearing domestic checking deposit liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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X

- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

+ References

No definition available.

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X

- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478353/942-405-50-1

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X

- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000.

+ References

No definition available.

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