Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 99,126	$ 98,831
Interest-bearing Deposits in Banks and Other Financial Institutions	9,213	8,455
Investment securities, held to maturity	180,270	207,899
Loans held for sale	13,053	4,088
Loans (excluding loan level hedges), net	3,974,046
Stock in FHLB	23,023	22,447
Interest receivable	20,456	18,828
Liabilities
Non–interest bearing deposits	1,016,646	709,760
Interest bearing deposits	3,319,643	3,221,242
Borrowings	587,473	549,741
Interest payable	2,481	3,062
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash and due from banks	99,126	98,831
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Investment securities, held to maturity	0	0
Loans held for sale	0	0
Loans (excluding loan level hedges), net	0	0
Stock in FHLB	0	0
Interest receivable	0	0
Liabilities
Non–interest bearing deposits	1,016,646	709,760
Interest bearing deposits	0	0
Borrowings	0	0
Subordinated notes	0
Junior subordinated debentures issued to capital trusts	0	0
Interest payable	0	0
Significant Other Observable Inputs (Level 2)
Assets
Cash and due from banks	0	0
Interest-bearing Deposits in Banks and Other Financial Institutions	9,409	8,537
Investment securities, held to maturity	191,612	215,147
Loans held for sale	0	0
Loans (excluding loan level hedges), net	0	0
Stock in FHLB	23,023	22,447
Interest receivable	20,456	18,828
Liabilities
Non–interest bearing deposits	0	0
Interest bearing deposits	3,328,701	3,180,768
Borrowings	601,168	546,995
Subordinated notes	57,628
Junior subordinated debentures issued to capital trusts	52,747	51,809
Interest payable	2,481	3,062
Significant Unobservable Inputs (Level 3)
Assets
Cash and due from banks	0	0
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Investment securities, held to maturity	0	0
Loans held for sale	13,053	4,088
Loans (excluding loan level hedges), net	3,956,730	3,554,951
Stock in FHLB	0	0
Interest receivable	0	0
Liabilities
Non–interest bearing deposits	0	0
Interest bearing deposits	0	0
Borrowings	0	0
Subordinated notes	0
Junior subordinated debentures issued to capital trusts	0	0
Interest payable	0	0
Carrying Amount
Assets
Cash and due from banks	99,126	98,831
Interest-bearing Deposits in Banks and Other Financial Institutions	9,213	8,455
Investment securities, held to maturity	180,270	207,899
Loans held for sale	13,053	4,088
Loans (excluding loan level hedges), net	3,974,046	3,619,174
Stock in FHLB	23,023	22,447
Interest receivable	20,456	18,828
Liabilities
Non–interest bearing deposits	1,016,646	709,760
Interest bearing deposits	3,319,643	3,221,242
Borrowings	587,473	549,741
Subordinated notes	58,566
Junior subordinated debentures issued to capital trusts	56,491	56,311
Interest payable	$ 2,481	$ 3,062

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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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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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