Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,099,736	$ 990,138
Allowance for loan losses	(15,352)	(10,050)
Loans receivable, net	1,084,384	980,088
Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	787,908	753,041
Real Estate \| Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	651,684	630,668
Real Estate \| SBA Loans—Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	136,224	122,373
SBA Loans—Non-Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	75,151	9,895
Commercial and Industrial
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	107,307	103,852
Home Mortgage
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	128,212	120,686
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,158	$ 2,664

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 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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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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