Fair Value of Financial Instruments - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) Security	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Security transfer from Level 3 to Level 2 | Security	1
Collateral dependent impaired loans categorized as Level 3	$ 12,624	$ 11,939	$ 12,136
Specific allocation for collateral dependent impaired loans	1,535	2,184	$ 1,109
Impairment	280	414
Collateral Dependent [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Specific allocation for collateral dependent impaired loans	1,500	2,200
Level 3 [Member] | Collateral Dependent [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateral dependent impaired loans categorized as Level 3	$ 7,100	$ 8,500