INVESTMENT SECURITIES - Schedule of Held-to-Maturity with Unrecognized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Fair Value
Less than 12 months	$ 38,340	$ 0
12 months or longer	2,382,229	2,489,058
Total	2,420,569	2,489,058
Unrecognized Losses
Less than 12 months	(1,429)	0
12 months or longer	(375,447)	(356,103)
Total	(376,876)	(356,103)
U.S. government-sponsored entities and agencies
Fair Value
Less than 12 months	0	0
12 months or longer	687,544	710,909
Total	687,544	710,909
Unrecognized Losses
Less than 12 months	0	0
12 months or longer	(137,815)	(129,526)
Total	(137,815)	(129,526)
Mortgage-backed securities - Agency
Fair Value
Less than 12 months	0	0
12 months or longer	745,684	782,818
Total	745,684	782,818
Unrecognized Losses
Less than 12 months	0	0
12 months or longer	(135,338)	(127,505)
Total	(135,338)	(127,505)
States and political subdivisions
Fair Value
Less than 12 months	38,340	0
12 months or longer	949,001	995,331
Total	987,341	995,331
Unrecognized Losses
Less than 12 months	(1,429)	0
12 months or longer	(102,294)	(99,072)
Total	$ (103,723)	$ (99,072)

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.

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-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

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