Allowance for Credit Losses - Summary of Allowance for Credit Losses by Loan Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 26,435	$ 23,767	$ 23,767
Charge-offs	(92)	(88)
Recoveries	11	18
Provision for credit losses	265	145
Ending balance	26,619	23,842	26,435
Agriculture and Farmland [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	11	12	12
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	(1)	0
Ending balance	10	12	11
Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	893	959	959
Charge-offs	0	0
Recoveries	2	1
Provision for credit losses	465	563
Ending balance	1,360	1,523	893
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	4,093	2,940	2,940
Charge-offs	(74)	(6)
Recoveries	3	2
Provision for credit losses	381	26
Ending balance	4,403	2,962	4,093
Multifamily [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	1,805	1,483	1,483
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	8	109
Ending balance	1,813	1,592	1,805
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	5,611	6,572	6,572
Charge-offs	0	(6)
Recoveries	0	0
Provision for credit losses	(272)	(828)
Ending balance	5,339	5,738	5,611
Non-owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	9,345	5,773	5,773
Charge-offs	0	(54)
Recoveries	0	0
Provision for credit losses	(295)	380
Ending balance	9,050	6,099	9,345
First Liens [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	3,395	4,778	4,778
Charge-offs	0	0
Recoveries	4	8
Provision for credit losses	(100)	(111)
Ending balance	3,299	4,675	3,395
Second Liens and Lines of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	1,154	1,072	1,072
Charge-offs	0	0
Recoveries	1	6
Provision for credit losses	53	(7)
Ending balance	1,208	1,071	1,154
Municipal [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	48	79	79
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	(12)	(11)
Ending balance	36	68	48
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	80	99	99
Charge-offs	(18)	(22)
Recoveries	1	1
Provision for credit losses	38	24
Ending balance	$ 101	$ 102	$ 80