Allowance for Credit Losses - Changes in the Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	$ 37,160	$ 28,511	$ 26,641
Charge-offs	(3,915)	(1,431)	(222)
Recoveries	539	452	340
Provision (Credit)	5,885	4,435	1,752
Ending Balance	39,669	37,160	28,511
ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		897
Ending Balance			897
ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		4,296
Ending Balance			4,296
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	7,587	3,011	2,600
Charge-offs	(2,197)	(1,300)	(22)
Recoveries	255	177	24
Provision (Credit)	941	5,270	409
Ending Balance	6,586	7,587	3,011
Commercial and Agriculture [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		429
Ending Balance			429
Commercial Real Estate Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	4,723	4,565	4,464
Recoveries		15	42
Provision (Credit)	(396)	(951)	59
Ending Balance	4,327	4,723	4,565
Commercial Real Estate Owner Occupied [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		19
Ending Balance			19
Commercial Real Estate Owner Occupied [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		1,075
Ending Balance			1,075
Commercial Real Estate Non Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	12,056	14,138	13,860
Charge-offs	(672)
Recoveries	18	46	74
Provision (Credit)	2	719	204
Ending Balance	11,404	12,056	14,138
Commercial Real Estate Non Owner Occupied [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		(2,847)
Ending Balance			(2,847)
Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	8,489	3,145	2,597
Charge-offs	(83)	(17)	(97)
Recoveries	197	134	163
Provision (Credit)	3,263	2,299	482
Ending Balance	11,866	8,489	3,145
Residential Real Estate [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		166
Ending Balance			166
Residential Real Estate [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		2,762
Ending Balance			2,762
Real Estate Construction [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	3,388	2,293	1,810
Recoveries	12	37	4
Provision (Credit)	308	(444)	479
Ending Balance	3,708	3,388	2,293
Real Estate Construction [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		1,502
Ending Balance			1,502
Farm Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	260	291	287
Recoveries			6
Provision (Credit)	(34)	(3)	(2)
Ending Balance	226	260	291
Farm Real Estate [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		(28)
Ending Balance			(28)
Lease Financing Receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	297	429
Charge-offs	(881)		(23)
Recoveries	20
Provision (Credit)	1,925	(2,510)	452
Ending Balance	1,361	297	429
Lease Financing Receivable [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		635
Ending Balance			635
Lease Financing Receivable [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		1,743
Ending Balance			1,743
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	341	98	176
Charge-offs	(82)	(114)	(80)
Recoveries	37	43	27
Provision (Credit)	(105)	36	(25)
Ending Balance	191	341	98
Consumer and Other [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		77
Ending Balance			77
Consumer and Other [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		201
Ending Balance			201
Unallocated [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	19	541	847
Provision (Credit)	(19)	19	(306)
Ending Balance	$ 0	19	541
Unallocated [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		$ (541)
Ending Balance			$ (541)

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.

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