Investment Securities - Schedule of Available for Sale Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 266,117	$ 264,639
Gross Unrealized Gains	467	87
Gross Unrealized Losses	15,586	20,607
Fair Value	250,998	244,119
U.S. Government Sponsored Agencies
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	142,353	147,674
Gross Unrealized Gains	250	68
Gross Unrealized Losses	8,662	10,909
Fair Value	133,941	136,833
Mortgage-Backed Securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	92,464	85,708
Gross Unrealized Gains	216	19
Gross Unrealized Losses	6,066	8,444
Fair Value	86,614	77,283
Corporate Bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	31,300	31,237
Gross Unrealized Gains	1	0
Gross Unrealized Losses	858	1,254
Fair Value	$ 30,443	29,983
Small Business Administration
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost		20
Fair Value		$ 20

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

FB Bancorp, Inc. /MD/ 10-Q