Investment Securities - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Marketable Securities [Line Items]
Securities available-for-sale	$ 148,190,000		$ 146,349,000
Accrued interest on securities available-for-sale	503,000		548,000
Proceeds from sales and calls of securities available-for-sale	0	$ 0
Allowance for credit loss on available-for-sale securities	$ 0		$ 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest \| Investment Securities Concentration Risk \| Issued By US Government Agency and US Government Sponsored Enterprise
Marketable Securities [Line Items]
Concentration risk percentage	95.30%		95.30%
Asset Pledged as Collateral
Marketable Securities [Line Items]
Securities available-for-sale	$ 75,400,000		$ 72,500,000

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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