Securities - Schedule of Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Available for sale
Amortized Cost	$ 282,022	$ 634,615
Gross Unrealized Gains	0	455
Gross Unrealized Losses	(48,345)	(87,819)
Fair Value	233,677	547,251
Held to maturity
Federal funds sold	1,867,848	1,945,795
Gross Unrealized Gains	958	1,185
Gross Unrealized Losses	(302,538)	(278,222)
Fair Value	1,566,268	1,668,758
Less: Allowance for credit losses	(158)	(157)	$ (257)
Held to maturity securities, net of allowance for credit losses	1,867,690	1,945,638
U.S. Treasury and federal agencies
Available for sale
Amortized Cost	2,258	72,938
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(457)	(8,561)
Fair Value	1,801	64,377
Held to maturity
Federal funds sold	278,383	287,259
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(39,253)	(41,299)
Fair Value	239,130	245,960
State and municipal
Available for sale
Amortized Cost	243,521	353,299
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(41,687)	(49,269)
Fair Value	201,834	304,030
Held to maturity
Federal funds sold	1,048,862	1,088,499
Gross Unrealized Gains	958	1,185
Gross Unrealized Losses	(183,114)	(150,323)
Fair Value	866,706	939,361
U.S. government agency mortgage-backed securities
Available for sale
Amortized Cost	17,984	165,061
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3,441)	(24,184)
Fair Value	14,543	140,877
Held to maturity
Federal funds sold	349,726	374,974
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(54,904)	(56,467)
Fair Value	294,822	318,507
Private labeled mortgage–backed pools
Available for sale
Amortized Cost	0
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	0
Held to maturity
Federal funds sold	29,278	32,329
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3,958)	(4,595)
Fair Value	25,320	27,734
Corporate notes
Available for sale
Amortized Cost	18,259	43,317
Gross Unrealized Gains	0	455
Gross Unrealized Losses	(2,760)	(5,805)
Fair Value	15,499	37,967
Held to maturity
Federal funds sold	161,599	162,734
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(21,309)	(25,538)
Fair Value	$ 140,290	$ 137,196

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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