Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 249,711	$ 98,831
Interest–earning time deposits	8,965	8,455
Investment securities, held to maturity	168,676	207,899
Loans held for sale	13,538	4,088
Loans (excluding loan level hedges), net	3,810,356
Stock in FHLB	23,023	22,447
Interest receivable	21,396	18,828
Liabilities
Non–interest bearing deposits	1,053,242	709,760
Interest bearing deposits	3,477,891	3,221,242
Borrowings	475,000	549,741
Interest payable	2,712	3,062
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash and due from banks	249,711	98,831
Interest–earning time deposits	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	1,053,242	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–earning time deposits	9,136	8,537
Investment securities, held to maturity	179,990	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	21,396	18,828
Liabilities
Non–interest bearing deposits	0	0
Interest bearing deposits	3,466,522	3,180,768
Borrowings	483,245	546,995
Subordinated notes	57,626
Junior subordinated debentures issued to capital trusts	52,676	51,809
Interest payable	2,712	3,062
Significant Unobservable Inputs (Level 3)
Assets
Cash and due from banks	0	0
Interest–earning time deposits	0	0
Investment securities, held to maturity	0	0
Loans held for sale	13,538	4,088
Loans (excluding loan level hedges), net	3,767,348	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	249,711	98,831
Interest–earning time deposits	8,965	8,455
Investment securities, held to maturity	168,676	207,899
Loans held for sale	13,538	4,088
Loans (excluding loan level hedges), net	3,810,356	3,619,174
Stock in FHLB	23,023	22,447
Interest receivable	21,396	18,828
Liabilities
Non–interest bearing deposits	1,053,242	709,760
Interest bearing deposits	3,477,891	3,221,242
Borrowings	475,000	549,741
Subordinated notes	58,603
Junior subordinated debentures issued to capital trusts	56,548	56,311
Interest payable	$ 2,712	$ 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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