Investment in Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Amortized Cost	$ 601,275	$ 684,917
Gross Unrealized Gains	25	4
Gross Unrealized Losses	(60,498)	(57,804)
Fair Value	540,802	627,117
AFS, Less than 12 months, Estimated Fair Value	58,524	82,743
AFS, Less than 12 months, Unrealized Losses	549	675
AFS, 12 months or more, Estimated Fair Value	463,853	541,391
AFS, 12 months or more, Unrealized Losses	59,949	57,129
Debt Securities, Available-for-sale, Unrealized Loss Position	522,377	624,134
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	60,498	57,804
State and political subdivisions
Marketable Securities [Line Items]
Amortized Cost	220,717	235,297
Gross Unrealized Gains	8	4
Gross Unrealized Losses	(18,427)	(16,266)
Fair Value	202,298	219,035
AFS, Less than 12 months, Estimated Fair Value	4,040	63,198
AFS, Less than 12 months, Unrealized Losses	13	220
AFS, 12 months or more, Estimated Fair Value	189,863	152,854
AFS, 12 months or more, Unrealized Losses	18,414	16,046
Debt Securities, Available-for-sale, Unrealized Loss Position	193,903	216,052
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	18,427	16,266
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Marketable Securities [Line Items]
Amortized Cost	212,270	188,307
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(32,447)	(30,508)
Fair Value	179,823	157,799
AFS, Less than 12 months, Estimated Fair Value	36,831	0
AFS, Less than 12 months, Unrealized Losses	186	0
AFS, 12 months or more, Estimated Fair Value	142,992	157,799
AFS, 12 months or more, Unrealized Losses	32,261	30,508
Debt Securities, Available-for-sale, Unrealized Loss Position	179,823	157,799
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	32,447	30,508
Corporate bonds
Marketable Securities [Line Items]
Amortized Cost	118,986	111,109
Gross Unrealized Gains	17	0
Gross Unrealized Losses	(9,065)	(8,769)
Fair Value	109,938	102,340
AFS, Less than 12 months, Estimated Fair Value	17,653	19,545
AFS, Less than 12 months, Unrealized Losses	350	455
AFS, 12 months or more, Estimated Fair Value	82,255	82,795
AFS, 12 months or more, Unrealized Losses	8,715	8,314
Debt Securities, Available-for-sale, Unrealized Loss Position	99,908	102,340
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	9,065	8,769
Treasury securities
Marketable Securities [Line Items]
Amortized Cost	9,992	109,836
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(19)	(1,115)
Fair Value	9,973	108,721
AFS, Less than 12 months, Estimated Fair Value	0	0
AFS, Less than 12 months, Unrealized Losses	0	0
AFS, 12 months or more, Estimated Fair Value	9,973	108,721
AFS, 12 months or more, Unrealized Losses	19	1,115
Debt Securities, Available-for-sale, Unrealized Loss Position	9,973	108,721
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	19	1,115
Asset backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Marketable Securities [Line Items]
Amortized Cost	39,310	40,368
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(540)	(1,146)
Fair Value	38,770	39,222
AFS, Less than 12 months, Estimated Fair Value	0	0
AFS, Less than 12 months, Unrealized Losses	0	0
AFS, 12 months or more, Estimated Fair Value	38,770	39,222
AFS, 12 months or more, Unrealized Losses	540	1,146
Debt Securities, Available-for-sale, Unrealized Loss Position	38,770	39,222
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 540	$ 1,146