Fair Value Disclosures - Estimated Fair Value of Company's Financial Assets and Financial Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial assets:
Cash and cash equivalents, carrying amount	$ 413,704	$ 383,178
Securities - held to maturity, carrying amount	4,404	4,947
Loans not previously presented carrying amount	4,921,871	4,834,426
FHLB and other restricted stock, carrying amount	12,196	10,146
Accrued interest receivable, carrying amount	12,802	15,319
Cash and cash equivalents, fair value	413,704	383,178
Securities - held to maturity, fair value	5,727	5,447
Loans not previously presented, fair value	4,879,729	4,828,020
Accrued interest receivable, fair value	12,802	15,319
Financial liabilities:
Deposits, including deposits held-for-sale, carrying amount	4,709,484	4,646,679
Customer repurchase agreements, carrying amount	2,868	2,103
Federal Home Loan Bank advances, carrying amount	230,000	180,000
Paycheck Protection Program Liquidity Facility	0	27,144
Subordinated notes, carrying amount	107,169	106,957
Junior subordinated debentures	40,737	40,602
Accrued interest payable, carrying amount	1,545	1,951
Deposits, fair value	4,705,096	4,646,552
Customer repurchase agreements, fair value	2,868	2,103
Federal Home Loan Bank advances, fair value	230,000	180,000
Paycheck Protection Program Liquidity Facility, fair value		27,144
Subordinated notes, fair value	110,264	110,045
Junior subordinated debentures, fair value	41,941	41,286
Accrued interest payable, fair value	1,545	1,951
Level 1
Financial assets:
Cash and cash equivalents, fair value	413,704	383,178
Securities - held to maturity, fair value	0	0
Loans not previously presented, fair value	170,053	142,962
Accrued interest receivable, fair value	12,802	15,319
Financial liabilities:
Deposits, fair value	0	0
Customer repurchase agreements, fair value	0	0
Federal Home Loan Bank advances, fair value	0	0
Paycheck Protection Program Liquidity Facility, fair value		0
Subordinated notes, fair value	0	0
Junior subordinated debentures, fair value	0	0
Accrued interest payable, fair value	1,545	1,951
Level 2
Financial assets:
Cash and cash equivalents, fair value	0	0
Securities - held to maturity, fair value	0	0
Loans not previously presented, fair value	0	0
Accrued interest receivable, fair value	0	0
Financial liabilities:
Deposits, fair value	4,705,096	4,646,552
Customer repurchase agreements, fair value	2,868	2,103
Federal Home Loan Bank advances, fair value	230,000	180,000
Paycheck Protection Program Liquidity Facility, fair value		27,144
Subordinated notes, fair value	110,264	110,045
Junior subordinated debentures, fair value	41,941	41,286
Accrued interest payable, fair value	0	0
Level 3
Financial assets:
Cash and cash equivalents, fair value	0	0
Securities - held to maturity, fair value	5,727	5,447
Loans not previously presented, fair value	4,709,676	4,685,058
Accrued interest receivable, fair value	0	0
Financial liabilities:
Deposits, fair value	0	0
Customer repurchase agreements, fair value	0	0
Federal Home Loan Bank advances, fair value	0	0
Paycheck Protection Program Liquidity Facility, fair value		0
Subordinated notes, fair value	0	0
Junior subordinated debentures, fair value	0	0
Accrued interest payable, fair value	$ 0	$ 0

Accrued interest payable fair value disclosure.

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Accrued interest receivable fair value disclosure.

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Deposits, Including Deposits Held-For-Sale

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Federal home loan bank and other restricted stock at cost.

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Junior subordinated notes fair value disclosure.

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Loans and leases receivable reported amount not previously presented.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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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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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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

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Amount of interest payable on debt, including, but not limited to, trade payables.

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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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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Fair value portion of securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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