Loans and Allowance for Credit Losses on Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 28,722	$ 24,940	$ 25,803	$ 14,653	$ 14,653
Provision (credit) for credit losses	793	(211)	3,601	9,821
Charge-offs	(45)	(20)	(209)	(648)	(809)
Recoveries	120	182	395	244
Ending balance	29,590	24,891	29,590	24,891	25,803
Provision for credit losses	667	(518)	3,239	9,889
Provision (credit) for held-to-maturity securities	(62)	(219)	(432)	(194)
Provision (credit) for unfunded loan commitments	(64)	(88)	70	262
PCD loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance				821	821
Commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,231	1,477	1,752	1,475	1,475
Provision (credit) for credit losses	(147)	(256)	301	(76)
Charge-offs	(3)	(5)	(94)	(558)
Recoveries	62	51	184	51
Ending balance	2,143	1,267	2,143	1,267	1,752
Commercial \| PCD loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance				375	375
Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	19,281	16,626	17,766	9,792	9,792
Provision (credit) for credit losses	1,159	1,056	2,624	7,495
Charge-offs	0	0	0	0
Recoveries	0	6	50	30
Ending balance	20,440	17,688	20,440	17,688	17,766
Commercial Real Estate \| PCD loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance				371	371
1-4 Family Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,505	2,965	2,751	2,435	2,435
Provision (credit) for credit losses	(114)	(146)	(377)	374
Charge-offs	0	0	0	0
Recoveries	46	59	63	67
Ending balance	2,437	2,878	2,437	2,878	2,751
1-4 Family Real Estate \| PCD loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance				2	2
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	4,705	3,872	3,534	951	951
Provision (credit) for credit losses	(105)	(865)	1,053	2,028
Charge-offs	(42)	(15)	(115)	(90)
Recoveries	12	66	98	96
Ending balance	$ 4,570	$ 3,058	$ 4,570	3,058	3,534
Consumer \| PCD loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance				$ 73	$ 73

Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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