Loans - Summary of Activities in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2020
Allowance for Loan Losses
Balance at beginning of year			$ 16,242	$ 13,672	$ 13,672
Provision for loan loss	$ 1,637	$ 659	3,845	3,000	3,444
Loans charged off	(123)	(103)	(334)	(1,154)	(1,332)
Recoveries	52	55	237	180	458
Balance at ending of year	19,990		19,990		16,242
Allowance for Unfunded Loan Commitments & Letters of Credit	1,118		1,118		1,041
Total Allowance for Credit Losses	$ 21,108	$ 16,737	$ 21,108	$ 16,737	$ 17,283	$ 19,591	$ 16,232	$ 14,313