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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 26,826		$ 26,826	[1]
Net assets acquired	7,455		7,594
Accumulated amortization of intangibles	5,126		4,691
Amortization of intangibles	397	$ 351
Mortgage servicing asset	27,700		16,500
Core Deposits [Member]
Goodwill [Line Items]
Net assets acquired	6,347		6,718
Accumulated amortization of intangibles	3,279		2,908
Loan Servicing Assets Included in Other Amortization Intangibles [Member]
Goodwill [Line Items]
Accumulated amortization of intangibles	620		362
Loan Servicing Assets Included in Interest and Fees on Loans [Member]
Goodwill [Line Items]
Amortization of intangibles	$ 297		$ 266
Minimum [Member]
Goodwill [Line Items]
Amortization of intangible assets	5 years
Maximum [Member]
Goodwill [Line Items]
Amortization of intangible assets	12 years
[1] Derived from audited December 31, 2021 Consolidated Financial Statements.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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