Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Loans Receivable - Summary of Portfolio Segments and Classes of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	$ 415,807		$ 328,247
Deferred fees	(1,580)		(856)
Allowance for loan losses	(4,800)	$ (4,386)	(4,177)	$ (3,766)	$ (3,644)	$ (1,689)
Total	409,427		323,214
Commercial and industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	129,835		101,370
Construction and land development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	25,177		20,935
Real estate - commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	193,488		145,800
Real estate - residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	41,891		37,302
Real estate - home equity [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	21,987		20,218
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	$ 3,429		$ 2,622