Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 228,986	$ 123,505
Interest–earning time deposits	2,452	2,812
Investment securities, held to maturity	1,983,496	2,022,748
Loans held for sale	6,933	5,807
Loans (excluding loan level hedges), net	4,216,284	4,107,534
Stock in FHLB	34,509	26,677
Interest receivable	37,536	35,294
Liabilities
Non–interest bearing deposits	1,170,055	1,277,768
Interest bearing deposits	4,539,277	4,580,006
Borrowings	1,352,039	1,142,949
Interest payable	12,739	5,380
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash and due from banks	228,986	123,505
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	1,170,055	1,277,768
Interest bearing deposits	0	0
Borrowings	0	0
Subordinated notes	0	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	2,415	2,778
Investment securities, held to maturity	1,668,229	1,681,309
Loans held for sale	0	0
Loans (excluding loan level hedges), net	0	0
Stock in FHLB	34,509	26,677
Interest receivable	37,536	35,294
Liabilities
Non–interest bearing deposits	0	0
Interest bearing deposits	4,245,049	4,100,154
Borrowings	1,338,249	1,139,926
Subordinated notes	57,600	56,496
Junior subordinated debentures issued to capital trusts	50,569	51,327
Interest payable	12,739	5,380
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	6,933	5,807
Loans (excluding loan level hedges), net	3,957,526	3,852,458
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	0
Junior subordinated debentures issued to capital trusts	0	0
Interest payable	0	0
Carrying Amount
Assets
Cash and due from banks	228,986	123,505
Interest–earning time deposits	2,452	2,812
Investment securities, held to maturity	1,983,496	2,022,748
Loans held for sale	6,933	5,807
Loans (excluding loan level hedges), net	4,216,284	4,107,534
Stock in FHLB	34,509	26,677
Interest receivable	37,536	35,294
Liabilities
Non–interest bearing deposits	1,170,055	1,277,768
Interest bearing deposits	4,539,277	4,580,006
Borrowings	1,352,039	1,142,949
Subordinated notes	58,970	58,896
Junior subordinated debentures issued to capital trusts	57,143	57,027
Interest payable	$ 12,739	$ 5,380