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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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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Allowance for Credit Losses - Changes in the Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	$ 38,849	$ 34,196	$ 37,160	$ 28,511	$ 28,511
Charge-offs	(887)	(14)	(1,538)	(189)
Recoveries	157	106	455	153
Provision	1,800	861	3,842	1,481
Ending Balance	39,919	35,149	39,919	35,149	37,160
ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				897	897
ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				4,296	4,296
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	7,737	3,316	7,587	3,011	3,011
Charge-offs	(812)		(1,024)	(140)
Recoveries	97	42	249	48
Provision	(1,674)	2,182	(1,464)	2,192
Ending Balance	5,348	5,540	5,348	5,540	7,587
Commercial and Agriculture [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				429	429
Commercial Real Estate Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	4,652	5,733	4,723	4,565	4,565
Recoveries	1		4	0
Provision	(325)	(202)	(399)	(128)
Ending Balance	4,328	5,531	4,328	5,531	4,723
Commercial Real Estate Owner Occupied [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				19	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	1,075
Commercial Real Estate Non Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	12,968	11,760	12,056	14,138	14,138
Charge-offs			(174)
Recoveries	5	8	10	15
Provision	1,448	(122)	2,529	340
Ending Balance	14,421	11,646	14,421	11,646	12,056
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)	(2,847)
Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	9,074	5,934	8,489	3,145	3,145
Charge-offs	(52)	(1)	(65)	(11)
Recoveries	38	32	158	54
Provision	356	550	834	399
Ending Balance	9,416	6,515	9,416	6,515	8,489
Residential Real Estate [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				166	166
Residential Real Estate [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				2,762	2,762
Real Estate Construction [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	3,433	3,920	3,388	2,293	2,293
Recoveries	8	5	12	9
Provision	206	(478)	247	(357)
Ending Balance	3,647	3,447	3,647	3,447	3,388
Real Estate Construction [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				0	0
Real Estate Construction [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				1,502	1,502
Farm Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	320	269	260	291	291
Provision	(59)	(26)	1	(20)
Ending Balance	261	243	261	243	260
Farm Real Estate [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				0	0
Farm Real Estate [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				(28)	(28)
Lease Financing Receivables [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	359	2,907	297	429	429
Charge-offs			(226)
Recoveries	1		1
Provision	1,850	(960)	2,138	(860)
Ending Balance	2,210	1,947	2,210	1,947	297
Lease Financing Receivables [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				635	635
Lease Financing Receivables [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				1,743	1,743
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance	306	354	341
Charge-offs	(23)	(13)	(49)
Recoveries	7	19	21
Provision	(22)	(88)	(45)
Ending Balance	268	272	268	272	341
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				98	98
Charge-offs				(38)
Recoveries				27
Provision				(93)
Ending Balance		272		272
Consumer and Other [Member] \| ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				77	77
Consumer and Other [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				201	201
Unallocated [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance		3	19	541	541
Provision	20	5	1	8
Ending Balance	$ 20	$ 8	$ 20	8	19
Unallocated [Member] \| ASU 2016-13 [Member] \| CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning Balance				$ (541)	$ (541)