Fair Value Measurements - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financial assets
Other investments	$ 5,951	$ 4,505
Financial liabilities
FHLB advances	24,999	10,000
Paycheck Protection Program Liquidity Facility	190,156
Carrying Value
Financial assets
Cash and due from banks	26,510	16,555
Interest earning deposits with other banks	147,666	111,259
Investment securities	24,318	32,710
Other investments	5,951	4,505
Loans receivable, net	1,432,297	927,633
Accrued interest receivable	5,944	2,980
Financial liabilities
Deposits	1,306,427	967,959
FHLB advances	24,999	10,000
Paycheck Protection Program Liquidity Facility	190,156
Subordinated debt	9,982	9,986
Junior subordinated debentures	3,583	3,584
Accrued interest payable	312	308
Estimated Fair Value
Financial assets
Cash and due from banks	26,510	16,555
Interest earning deposits with other banks	147,666	111,259
Investment securities	24,439	32,689
Other investments	5,951	4,505
Loans receivable, net	1,423,619	922,046
Accrued interest receivable	5,944	2,980
Financial liabilities
Deposits	1,306,845	967,804
FHLB advances	24,907	10,000
Paycheck Protection Program Liquidity Facility	190,156
Subordinated debt	9,892	9,879
Junior subordinated debentures	3,056	3,214
Accrued interest payable	312	308
Estimated Fair Value | Level 1
Financial assets
Cash and due from banks	26,510	16,555
Interest earning deposits with other banks	147,666	111,259
Investment securities	20,042	24,945
Estimated Fair Value | Level 2
Financial assets
Investment securities	4,397	7,744
Other investments	5,201	4,005
Accrued interest receivable	5,944	2,980
Financial liabilities
Deposits	1,306,845	967,804
FHLB advances	24,907	10,000
Paycheck Protection Program Liquidity Facility	190,156
Subordinated debt	9,892	9,879
Junior subordinated debentures	3,056	3,214
Accrued interest payable	312	308
Estimated Fair Value | Level 3
Financial assets
Other investments	750	500
Loans receivable, net	$ 1,423,619	$ 922,046