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Fair Value - Recorded Amount of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
AFS securities
AFS securities, at fair value	$ 497,791	$ 489,029
Total	505,138	492,012
U.S. Treasury
AFS securities
AFS securities, at fair value	197,534	220,571
States and political subdivisions
AFS securities
AFS securities, at fair value	69,205	76,568
Mortgage-backed securities
AFS securities
AFS securities, at fair value	22,252	26,886
Collateralized mortgage obligations
AFS securities
AFS securities, at fair value	200,466	154,674
Corporate
AFS securities
AFS securities, at fair value	5,921	7,286
Level 1
AFS securities
Total	$ 0	$ 0
Percent of assets and liabilities measured at fair value	0.00%	0.00%
Level 2
AFS securities
Total	$ 497,791	$ 489,029
Percent of assets and liabilities measured at fair value	98.55%	99.39%
Level 3
AFS securities
Total	$ 7,347	$ 2,983
Percent of assets and liabilities measured at fair value	1.45%	0.61%
Recurring items
AFS securities
AFS securities, at fair value	$ 497,791	$ 489,029
Recurring items | U.S. Treasury
AFS securities
AFS securities, at fair value	197,534	220,571
Recurring items | States and political subdivisions
AFS securities
AFS securities, at fair value	69,205	76,568
Recurring items | Auction rate money market preferred
AFS securities
AFS securities, at fair value	2,413	3,044
Recurring items | Mortgage-backed securities
AFS securities
AFS securities, at fair value	22,252	26,886
Recurring items | Collateralized mortgage obligations
AFS securities
AFS securities, at fair value	200,466	154,674
Recurring items | Corporate
AFS securities
AFS securities, at fair value	5,921	7,286
Recurring items | Level 1
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 1 | U.S. Treasury
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 1 | States and political subdivisions
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 1 | Auction rate money market preferred
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 1 | Mortgage-backed securities
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 1 | Collateralized mortgage obligations
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 1 | Corporate
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 2
AFS securities
AFS securities, at fair value	497,791	489,029
Recurring items | Level 2 | U.S. Treasury
AFS securities
AFS securities, at fair value	197,534	220,571
Recurring items | Level 2 | States and political subdivisions
AFS securities
AFS securities, at fair value	69,205	76,568
Recurring items | Level 2 | Auction rate money market preferred
AFS securities
AFS securities, at fair value	2,413	3,044
Recurring items | Level 2 | Mortgage-backed securities
AFS securities
AFS securities, at fair value	22,252	26,886
Recurring items | Level 2 | Collateralized mortgage obligations
AFS securities
AFS securities, at fair value	200,466	154,674
Recurring items | Level 2 | Corporate
AFS securities
AFS securities, at fair value	5,921	7,286
Recurring items | Level 3
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 3 | U.S. Treasury
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 3 | States and political subdivisions
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 3 | Auction rate money market preferred
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 3 | Mortgage-backed securities
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 3 | Collateralized mortgage obligations
AFS securities
AFS securities, at fair value	0	0
Recurring items | Level 3 | Corporate
AFS securities
AFS securities, at fair value	0	0
Nonrecurring items
AFS securities
Collateral dependent (net of ACL)	4,319	254
OMSR	2,090	2,185
Foreclosed assets	938	544
Nonrecurring items | Level 1
AFS securities
Collateral dependent (net of ACL)	0	0
OMSR	0	0
Foreclosed assets	0	0
Nonrecurring items | Level 2
AFS securities
Collateral dependent (net of ACL)	0	0
OMSR	0	0
Foreclosed assets	0	0
Nonrecurring items | Level 3
AFS securities
Collateral dependent (net of ACL)	4,319	254
OMSR	2,090	2,185
Foreclosed assets	$ 938	$ 544

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