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Securities - Composition of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	$ 1,001,784	$ 909,651
Marketable equity securities	994	1,142
Total Securities	1,002,778	910,793
Total Debt Securities, Available-for-sale, Amortized Cost	1,104,105	900,235
Gross Unrealized Gains	261	15,183
Gross Unrealized Losses	(102,582)	(5,767)
Fair Value	1,001,784	909,651
Interest receivable	3,700	3,300
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	131,695	95,327
Total Debt Securities, Available-for-sale, Amortized Cost	145,416	95,954
Gross Unrealized Gains	0	115
Gross Unrealized Losses	(13,721)	(742)
Fair Value	131,695	95,327
Obligations of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	41,811	70,348
Total Debt Securities, Available-for-sale, Amortized Cost	43,479	68,599
Gross Unrealized Gains	0	1,749
Gross Unrealized Losses	(1,668)	0
Fair Value	41,811	70,348
Collateralized mortgage obligations of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	428,407	270,294
Total Debt Securities, Available-for-sale, Amortized Cost	482,039	270,696
Gross Unrealized Gains	203	2,408
Gross Unrealized Losses	(53,835)	(2,810)
Fair Value	428,407	270,294
Residential mortgage-backed securities of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	41,587	56,793
Total Debt Securities, Available-for-sale, Amortized Cost	49,418	57,029
Gross Unrealized Gains	3	392
Gross Unrealized Losses	(7,834)	(628)
Fair Value	41,587	56,793
Commercial mortgage-backed securities of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	327,313	341,300
Total Debt Securities, Available-for-sale, Amortized Cost	352,465	336,918
Gross Unrealized Gains	0	5,969
Gross Unrealized Losses	(25,152)	(1,587)
Fair Value	327,313	341,300
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	500	500
Total Debt Securities, Available-for-sale, Amortized Cost	500	500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	500	500
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	30,471	75,089
Total Debt Securities, Available-for-sale, Amortized Cost	30,788	70,539
Gross Unrealized Gains	55	4,550
Gross Unrealized Losses	(372)	0
Fair Value	$ 30,471	$ 75,089

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