Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Securities available for sale	$ 684,641	$ 779,347
Securities held to maturity	358,899	374,818
Reserve Bank Stock	16,821	17,653
Liabilities
Other borrowings	50,014	86,006
Subordinated debt	39,491	39,433
Subordinated debentures	39,711	39,660
Reciprocal deposits included in deposits with no stated maturity	700,312	555,781
Reciprocal deposits included in deposits with stated maturity	99,571	46,794
Recorded Book Balance
Assets
Cash and due from banks	58,567	70,180
Interest bearing deposits	68,894	4,191
Securities available for sale	684,641	779,347
Securities held to maturity	358,899	374,818
Reserve Bank Stock	16,821	17,653
Net loans and loans held for sale	3,699,970	3,459,802
Accrued interest receivable	18,229	16,513
Derivative financial instruments	49,227	39,747
Liabilities
Deposits with no stated maturity	3,771,900	3,798,848
Deposits with stated maturity	813,712	580,221
Other borrowings	50,014	86,006
Subordinated debt	39,491	39,433
Subordinated debentures	39,711	39,660
Accrued interest payable	6,449	2,287
Derivative financial instruments	23,183	19,127
Fair Value
Assets
Cash and due from banks	58,567	70,180
Interest bearing deposits	68,894	4,191
Securities available for sale	684,641	779,347
Securities held to maturity	309,199	335,418
Net loans and loans held for sale	3,306,342	3,185,518
Accrued interest receivable	18,229	16,513
Derivative financial instruments	49,227	39,747
Liabilities
Deposits with no stated maturity	3,771,900	3,798,848
Deposits with stated maturity	807,830	573,739
Other borrowings	49,539	86,006
Subordinated debt	38,883	41,058
Subordinated debentures	39,190	38,982
Accrued interest payable	6,449	2,287
Derivative financial instruments	23,183	19,127
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash and due from banks	58,567	70,180
Interest bearing deposits	68,894	4,191
Securities available for sale	0	0
Securities held to maturity	0	0
Net loans and loans held for sale	0	20,367
Accrued interest receivable	90	1
Derivative financial instruments	0	0
Liabilities
Deposits with no stated maturity	3,771,900	3,798,848
Deposits with stated maturity	0	0
Other borrowings	0	0
Subordinated debt	0	0
Subordinated debentures	0	0
Accrued interest payable	465	415
Derivative financial instruments	0	0
Significant Other Observable Inputs (Level 2)
Assets
Cash and due from banks	0	0
Interest bearing deposits	0	0
Securities available for sale	684,641	779,347
Securities held to maturity	309,199	335,418
Net loans and loans held for sale	13,979	26,518
Accrued interest receivable	6,177	6,503
Derivative financial instruments	49,227	39,747
Liabilities
Deposits with no stated maturity	0	0
Deposits with stated maturity	807,830	573,739
Other borrowings	49,539	86,006
Subordinated debt	38,883	41,058
Subordinated debentures	39,190	38,982
Accrued interest payable	5,984	1,872
Derivative financial instruments	23,183	19,127
Significant Un- observable Inputs (Level 3)
Assets
Cash and due from banks	0	0
Interest bearing deposits	0	0
Securities available for sale	0	0
Securities held to maturity	0	0
Net loans and loans held for sale	3,292,363	3,138,633
Accrued interest receivable	11,962	10,009
Derivative financial instruments	0	0
Liabilities
Deposits with no stated maturity	0	0
Deposits with stated maturity	0	0
Other borrowings	0	0
Subordinated debt	0	0
Subordinated debentures	0	0
Accrued interest payable	0	0
Derivative financial instruments	$ 0	$ 0