Investments - Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	$ 1,729,054	$ 1,358,960
Gross Unrealized Gains	481	15,247
Gross Unrealized Losses	(193,728)	(8,201)
Securities available-for-sale	1,535,807	1,366,006
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	710,650	430,295
Gross Unrealized Gains	2,484	5,773
Gross Unrealized Losses	(84,617)	(1,396)
Allowance for Credit Losses	(735)	(614)
Debt Securities, Held-to-maturity, Fair Value	628,517	434,672
debt securities, held to maturity, net of alloawance for credit losses	709,915	429,681
Obligations of U.S. Government-sponsored enterprises
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	266,090	175,409
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(28,305)	(1,901)
Securities available-for-sale	237,785	173,511
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	507,842	571,587
Gross Unrealized Gains	27	5,907
Gross Unrealized Losses	(90,425)	(2,410)
Securities available-for-sale	417,444	575,084
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	529,012	236,379
Gross Unrealized Gains	2,321	1,794
Gross Unrealized Losses	(65,347)	(730)
Debt Securities, Held-to-maturity, Fair Value	465,986	237,443
Agency mortgage-backed securities
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	727,931	509,243
Gross Unrealized Gains	453	8,485
Gross Unrealized Losses	(68,980)	(3,869)
Securities available-for-sale	659,404	513,859
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	57,018	68,105
Gross Unrealized Gains	0	940
Gross Unrealized Losses	(6,416)	(666)
Debt Securities, Held-to-maturity, Fair Value	50,602	68,379
US Treasury Bill Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	13,750	11,750
Gross Unrealized Gains	0	632
Gross Unrealized Losses	(1,110)	0
Securities available-for-sale	12,640	12,382
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	213,441	90,971
Gross Unrealized Gains	1	220
Gross Unrealized Losses	(4,908)	(21)
Securities available-for-sale	208,534	91,170
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	124,620	125,811
Gross Unrealized Gains	163	3,039
Gross Unrealized Losses	(12,854)	0
Debt Securities, Held-to-maturity, Fair Value	$ 111,929	$ 128,850

debt securities, held to maturity, net of allowance for credit losses

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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