DEBT SECURITIES - Schedule of Additional Information on Debt Securities In Unrealized or Unrecognized Loss Position (Details) $ in Thousands	Mar. 31, 2026 USD ($) security	Dec. 31, 2025 USD ($) security
Available for Sale
Debt securities with gross unrealized or unrecognized losses, fair value | $	$ 1,429,446	$ 1,131,224
Gross unrealized or unrecognized losses on debt securities | $	$ 158,580	$ 152,182
Ratio of gross unrealized or unrecognized losses to debt securities with gross unrealized or unrecognized losses	11.10%	13.50%
Count of debt securities | security	637	637
Count of debt securities in an unrealized or unrecognized loss position | security	455	376
Held to Maturity
Debt securities with gross unrealized or unrecognized losses, fair value | $	$ 601,074	$ 625,957
Gross unrealized or unrecognized losses on debt securities | $	$ 124,466	$ 120,428
Ratio of gross unrealized or unrecognized losses to debt securities with gross unrealized or unrecognized losses	20.70%	19.20%
Count of debt securities | security	52	52
Count of debt securities in an unrealized or unrecognized loss position | security	52	52
Total
Debt securities with gross unrealized or unrecognized losses, fair value | $	$ 2,030,520	$ 1,757,181
Gross unrealized or unrecognized losses on debt securities | $	$ 283,046	$ 272,610
Ratio of gross unrealized or unrecognized losses to debt securities with gross unrealized or unrecognized losses	13.90%	15.50%
Count of debt securities | security	689	689
Count of debt securities in an unrealized or unrecognized loss position | security	507	428