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Fair Value Measurement - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financial assets
Cash and due from banks	$ 46,900	$ 41,432
Interest bearing deposits with other banks	95,978	41,988
Securities held-to-maturity, fair value	4,033	4,573
Restricted stock, at cost	15,927	10,507
Loans held for sale	48,372	7,924
Loans and lease receivables, net (less impaired loans at fair value	4,548,630	4,274,188
Financial liabilities
Paycheck Protection Program Liquidity Facility	156,404	371,907
Federal Home Loan Bank advances	355,000	234,000
Securities sold under agreements to repurchase	27,715	41,994
Subordinated notes, net	73,473	73,342
Junior subordinated debentures issued to capital trusts, net	36,796	36,451
Level 1 | Carrying Amount
Financial assets
Cash and due from banks	46,900	41,432
Level 1 | Estimate of Fair Value Measurement
Financial assets
Cash and due from banks	46,900	41,432
Level 2 | Carrying Amount
Financial assets
Interest bearing deposits with other banks	95,978	41,988
Securities held-to-maturity, fair value	3,887	4,395
Restricted stock, at cost	15,927	10,507
Financial liabilities
Non-interest-bearing deposits	2,117,749	1,762,676
Interest-bearing deposits	3,040,529	2,989,355
Accrued interest payable	1,687	1,478
Paycheck Protection Program Liquidity Facility	156,404	371,907
Federal Home Loan Bank advances	355,000	234,000
Securities sold under agreements to repurchase	27,715	41,994
Subordinated notes, net	73,473	73,342
Level 2 | Estimate of Fair Value Measurement
Financial assets
Interest bearing deposits with other banks	95,978	41,988
Securities held-to-maturity, fair value	4,033	4,573
Restricted stock, at cost	15,927	10,507
Financial liabilities
Non-interest-bearing deposits	2,117,749	1,762,676
Interest-bearing deposits	3,041,101	2,990,735
Accrued interest payable	1,687	1,478
Paycheck Protection Program Liquidity Facility	156,404	371,907
Federal Home Loan Bank advances	355,000	234,000
Securities sold under agreements to repurchase	27,715	41,994
Subordinated notes, net	83,291	76,627
Level 3 | Carrying Amount
Financial assets
Loans held for sale	48,372	7,924
Loans and lease receivables, net (less impaired loans at fair value	4,485,994	4,202,793
Accrued interest receivable	18,857	20,678
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	36,796	36,451
Level 3 | Estimate of Fair Value Measurement
Financial assets
Loans held for sale	54,739	8,848
Loans and lease receivables, net (less impaired loans at fair value	4,478,323	4,205,906
Accrued interest receivable	18,857	20,678
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	$ 40,777	$ 40,543

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Total amount of interest-bearing domestic deposit liabilities, which may include brokered, retail, demand, checking, notice of withdrawal, money market and other interest-bearing deposits.

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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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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Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

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Amount of domestic noninterest-bearing deposits held by the entity, which may include demand deposits, checking, brokered and retail deposits.

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Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

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