Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 76,851	$ 76,851
Amortization of core deposit intangible assets	890	913	$ 945
Aggregate mortgage servicing rights (MSRs) amortization	572	524	247
Fair value of servicing rights	$ 2,642	$ 2,246
Fair value of servicing rights, discount rate	12.00%	12.00%
Mortgage loans	$ 405,786	$ 353,473	206,950
Servicing fees	$ 947	$ 634	$ 502
Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of servicing rights prepayment speed	8.00%	12.00%
Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of servicing rights prepayment speed	35.00%	50.00%
Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of servicing rights, discount rate	0.41%	0.93%

Mortgage loans.

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- Definition

Servicing fees.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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- Definition

Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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- Definition

Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

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