Fair Value Measurement - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets
Cash and due from banks	$ 47,101	$ 41,432
Interest bearing deposits with other banks	66,038	41,988
Securities held-to-maturity, fair value	4,066	4,573
Restricted stock, at cost	19,057	10,507
Loans held for sale	28,584	7,924
Loans and lease receivables, net (less impaired loans at fair value	4,389,030	4,274,188
Financial liabilities
Paycheck Protection Program Liquidity Facility	387,647	371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Subordinated notes, net	73,386	73,342
Junior subordinated debentures issued to capital trusts, net	36,565	36,451
Level 1 | Carrying Amount
Financial assets
Cash and due from banks	47,101	41,432
Level 1 | Estimate of Fair Value Measurement
Financial assets
Cash and due from banks	47,101	41,432
Level 2 | Carrying Amount
Financial assets
Interest bearing deposits with other banks	66,038	41,988
Securities held-to-maturity, fair value	3,892	4,395
Restricted stock, at cost	19,057	10,507
Financial liabilities
Non-interest-bearing deposits	2,015,643	1,762,676
Interest-bearing deposits	3,008,897	2,989,355
Accrued interest payable	2,267	1,478
Paycheck Protection Program Liquidity Facility	387,647	371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Subordinated notes, net	73,386	73,342
Level 2 | Estimate of Fair Value Measurement
Financial assets
Interest bearing deposits with other banks	66,038	41,988
Securities held-to-maturity, fair value	4,066	4,573
Restricted stock, at cost	19,057	10,507
Financial liabilities
Non-interest-bearing deposits	2,015,643	1,762,676
Interest-bearing deposits	3,009,901	2,990,735
Accrued interest payable	2,267	1,478
Paycheck Protection Program Liquidity Facility	387,647	371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Subordinated notes, net	75,832	76,627
Level 3 | Carrying Amount
Financial assets
Loans held for sale	28,584	7,924
Loans and lease receivables, net (less impaired loans at fair value	4,315,928	4,202,793
Accrued interest receivable	21,765	20,678
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	36,565	36,451
Level 3 | Estimate of Fair Value Measurement
Financial assets
Loans held for sale	32,408	8,848
Loans and lease receivables, net (less impaired loans at fair value	4,315,239	4,205,906
Accrued interest receivable	21,765	20,678
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	$ 40,807	$ 40,543