Allowance for Credit Losses - Summary of Allowance for Credit Losses by Loan Segment (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 4,666
Charge-offs	0
Recoveries	2
Provision for credit losses	203
Ending balance	10,526
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	279
Charge-offs	0
Recoveries	0
Provision for credit losses	119
Ending balance	208
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	274
Charge-offs	0
Recoveries	0
Provision for credit losses	26
Ending balance	813
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	583
Charge-offs	0
Recoveries	0
Provision for credit losses	64
Ending balance	930
Commercial and Industrial [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326	283
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	0
Multifamily [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	480
Charge-offs	0
Recoveries	0
Provision for credit losses	(90)
Ending balance	730
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	635
Charge-offs	0
Recoveries	0
Provision for credit losses	198
Ending balance	1,593
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	1,116
Charge-offs	0
Recoveries	0
Provision for credit losses	4
Ending balance	4,315
Non-owner Occupied [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326	3,195
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	0
First Liens [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	1,029
Charge-offs	0
Recoveries	1
Provision for credit losses	(157)
Ending balance	1,508
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	218
Charge-offs	0
Recoveries	1
Provision for credit losses	43
Ending balance	402
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	12
Charge-offs	0
Recoveries	0
Provision for credit losses	(3)
Ending balance	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	40
Charge-offs	0
Recoveries	0
Provision for credit losses	(1)
Ending balance	20
Consumer [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326	$ (19)