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Investment Securities - Narrative (Details)	3 Months Ended
	Mar. 31, 2025 USD ($) company security bond state	Mar. 31, 2024 USD ($) security	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)	Sep. 30, 2014 USD ($)
Debt Securities, Available-for-sale [Line Items]
AFS allowance	$ 0
HTM allowance for credit losses	197,000	$ 182,000	$ 196,000	$ 434,000
Amortized cost	368,768,000	379,635,000	$ 369,900,000
Gains or losses on the sale of securities	$ 0	$ 0
Number of securities temporarily impaired (security) | security	237	236	243
Financing receivable, threshold period past due	30 days
Debt securities, held-to-maturity, nonaccrual	$ 0
Amortized cost of securities transferred					$ 89,780,000
Fair value of securities transferred					89,757,000
Net unrealized loss, net of taxes on transferred securities					$ 15,000
Unamortized balance of net unrealized losses transferred	$ 45,000	$ 54,000	$ 47,000
Number of states | state	6
FHLB stock investment	$ 6,472,000	4,896,000	6,166,000
Federal reserve bank stock	1,037,000	1,037,000	1,037,000
Impairment losses	0
Other equity securities
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	351,890,000	314,208,000	349,833,000
Agency and mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses	$ 0
Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Number of private activity bonds | bond	2
Amortized cost	$ 18,841,000
Corporate securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses	116,000	113,000	116,000	$ 222,000
Amortized cost	$ 27,250,000	31,750,000	27,250,000
Number of individual companies | company	13
U.S. Treasury & Agency securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses	$ 0
Amortized cost	$ 38,100,000	$ 38,100,000	$ 38,100,000

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