Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial Assets:
Cash and cash equivalents	$ 127,524	$ 106,405
Loans held for sale	31,238	26,659
Loans receivable, net	1,156,500	1,109,217
Accrued interest receivable, net	3,096	3,985
Financial Liabilities:
Deposit	1,285,750	1,200,789
FHLB Advances	5,000	5,000
Accrued interest payable	622	1,021
Carrying Amount
Financial Assets:
Cash and cash equivalents	127,524	106,405
Loans held for sale	28,575	26,659
Loans receivable, net	1,140,533	1,084,384
Accrued interest receivable, net	3,096	3,985
Other investments:
FHLB and PCBB stock	6,233	6,233
Financial Liabilities:
Deposit	1,285,390	1,200,090
FHLB Advances	5,000	5,000
Accrued interest payable	622	1,021
Level 1
Financial Assets:
Cash and cash equivalents	127,524	106,405
Accrued interest receivable, net	8	7
Level 2
Financial Assets:
Loans held for sale	31,238	26,659
Accrued interest receivable, net	249	249
Financial Liabilities:
Deposit	1,285,750	1,200,789
FHLB Advances	5,000	5,000
Accrued interest payable	622	1,021
Level 3
Financial Assets:
Loans receivable, net	1,156,500	1,109,217
Accrued interest receivable, net	$ 2,839	$ 3,729