Investment in Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Marketable Securities [Line Items]
Amortized Cost	$ 777,765	$ 805,504
Gross Unrealized Gains	3,410	5,372
Gross Unrealized Losses	(44,385)	(40,104)
Fair Value	736,790	770,772
AFS, Less than 12 months, Estimated Fair Value	295,309	148,111
AFS, Less than 12 months, Unrealized Losses	5,324	1,733
AFS, 12 months or more, Estimated Fair Value	291,487	346,597
AFS, 12 months or more, Unrealized Losses	39,061	38,371
Debt Securities, Available-for-sale, Unrealized Loss Position	586,796	494,708
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	44,385	40,104
State and political subdivisions
Marketable Securities [Line Items]
Amortized Cost	221,180	247,716
Gross Unrealized Gains	3,221	3,228
Gross Unrealized Losses	(10,941)	(10,733)
Fair Value	213,460	240,211
AFS, Less than 12 months, Estimated Fair Value	5,882	0
AFS, Less than 12 months, Unrealized Losses	5	0
AFS, 12 months or more, Estimated Fair Value	105,314	139,379
AFS, 12 months or more, Unrealized Losses	10,936	10,733
Debt Securities, Available-for-sale, Unrealized Loss Position	111,196	139,379
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	10,941	10,733
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Marketable Securities [Line Items]
Amortized Cost	504,340	503,599
Gross Unrealized Gains	189	2,144
Gross Unrealized Losses	(31,115)	(27,047)
Fair Value	473,414	478,696
AFS, Less than 12 months, Estimated Fair Value	289,427	148,111
AFS, Less than 12 months, Unrealized Losses	5,319	1,733
AFS, 12 months or more, Estimated Fair Value	136,257	155,353
AFS, 12 months or more, Unrealized Losses	25,796	25,314
Debt Securities, Available-for-sale, Unrealized Loss Position	425,684	303,464
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	31,115	27,047
Corporate bonds
Marketable Securities [Line Items]
Amortized Cost	30,767	30,895
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,143)	(1,999)
Fair Value	28,624	28,896
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	28,624	28,896
AFS, 12 months or more, Unrealized Losses	2,143	1,999
Debt Securities, Available-for-sale, Unrealized Loss Position	28,624	28,896
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	2,143	1,999
Asset backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Marketable Securities [Line Items]
Amortized Cost	21,478	23,294
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(186)	(325)
Fair Value	21,292	22,969
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	21,292	22,969
AFS, 12 months or more, Unrealized Losses	186	325
Debt Securities, Available-for-sale, Unrealized Loss Position	21,292	22,969
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 186	$ 325

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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