Allowance for Credit Losses - Summary of Allowance for Credit Losses by Loan Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 10,526	$ 4,666
Charge-offs	0	0
Recoveries	97	99
Provision for credit losses	(395)	(192)
Ending balance	10,228	10,228
ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		5,655
Agriculture and Farmland [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	208	279
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	1	120
Ending balance	209	209
Agriculture and Farmland [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		(190)
Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	813	274
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	(85)	(59)
Ending balance	728	728
Construction [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		513
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	930	583
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	(201)	(137)
Ending balance	729	729
Commercial and Industrial [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		283
Multifamily [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	730	480
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	(57)	(147)
Ending balance	673	673
Multifamily [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		340
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	1,593	635
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	(34)	164
Ending balance	1,559	1,559
Owner Occupied [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		760
Non-owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	4,315	1,116
Charge-offs	0	0
Recoveries	12	12
Provision for credit losses	23	27
Ending balance	4,350	4,350
Non-owner Occupied [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		3,195
First Liens [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	1,508	1,029
Charge-offs	0	0
Recoveries	27	28
Provision for credit losses	(138)	(295)
Ending balance	1,397	1,397
First Liens [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		635
Second Liens and Lines of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	402	218
Charge-offs	0	0
Recoveries	58	59
Provision for credit losses	(77)	(34)
Ending balance	383	383
Second Liens and Lines of Credit [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		140
Municipal [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	7	12
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	0	(3)
Ending balance	7	7
Municipal [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		(2)
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	20	40
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	2	1
Ending balance	22	22
Consumer [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		(19)
Unallocated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provision for credit losses	171	171
Ending balance	$ 171	171
Unallocated [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326		$ 0