MARKETABLE SECURITIES - Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Amortized Cost
Due within one year	$ 36,285
Due after one year through five years	9,998
Due after five years through ten years	22,585
Due after ten years	0
Available-for-sale debt securities, amortized cost basis	377,348	$ 361,061
Estimated Fair Value
Due within one year	36,122
Due after one year through five years	9,948
Due after five years through ten years	21,309
Due after ten years	0
Available-for-sale debt securities, estimated fair value	362,647	340,304
Held to Maturity Amortized Cost
Due within one year	24,434
Due after one year through five years	40,061
Due after five years through ten years	73,879
Due after ten years	27,204
Held to Maturity debt securities, amortized cost	305,153	334,732
Held to Maturity Estimated Fair Value
Due within one year	24,359
Due after one year through five years	38,550
Due after five years through ten years	70,716
Due after ten years	24,647
Held to maturity debt securities, estimated fair value	278,169	303,245
Mortgage-backed securities
Amortized Cost
Available-for-sale debt securities, amortized cost basis	288,123
Available-for-sale debt securities, amortized cost basis	288,123	265,369
Estimated Fair Value
Available-for-sale debt securities, estimated fair value	276,140
Available-for-sale debt securities, estimated fair value	276,140	248,734
Held to Maturity Amortized Cost
Held to Maturity debt securities, amortized cost	106,920
Held to Maturity debt securities, amortized cost	106,920	109,281
Held to Maturity Estimated Fair Value
Held to maturity debt securities, estimated fair value	93,066
Held to maturity debt securities, estimated fair value	93,066	93,266
Collateralized mortgage obligations
Amortized Cost
Available-for-sale debt securities, amortized cost basis	20,357
Available-for-sale debt securities, amortized cost basis	20,357	21,554
Estimated Fair Value
Available-for-sale debt securities, estimated fair value	19,128
Available-for-sale debt securities, estimated fair value	19,128	19,519
Held to Maturity Amortized Cost
Held to Maturity debt securities, amortized cost	32,655
Held to Maturity debt securities, amortized cost	32,655	33,505
Held to Maturity Estimated Fair Value
Held to maturity debt securities, estimated fair value	26,831
Held to maturity debt securities, estimated fair value	$ 26,831	$ 25,877