MARKETABLE SECURITIES - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available for sale:
Available-for-sale debt securities, amortized cost basis	$ 249,938	$ 215,380
Gross Unrealized Gains	758	1,215
Gross Unrealized Losses	21,909	20,400
Estimated Fair Value	228,787	196,195
Held to maturity:
Amortized Cost	363,963	404,208
Gross Unrealized Gains	625	923
Gross Unrealized Losses	33,108	30,608
Estimated Fair Value	331,480	374,523
U.S. government agencies
Held to maturity:
Amortized Cost	9,331	9,292
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,127	1,066
Estimated Fair Value	8,204	8,226
Corporate bonds
Available for sale:
Available-for-sale debt securities, amortized cost basis	29,861	29,882
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2,801	3,077
Estimated Fair Value	27,060	26,805
Municipal securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	2,321	2,322
Gross Unrealized Gains	152	182
Gross Unrealized Losses	0	0
Estimated Fair Value	2,473	2,504
Held to maturity:
Amortized Cost	161,031	168,175
Gross Unrealized Gains	625	923
Gross Unrealized Losses	6,604	6,123
Estimated Fair Value	155,052	162,975
Mortgage-backed securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	199,776	164,419
Gross Unrealized Gains	601	1,014
Gross Unrealized Losses	17,237	15,621
Estimated Fair Value	183,140	149,812
Held to maturity:
Amortized Cost	117,454	119,872
Gross Unrealized Gains	0	0
Gross Unrealized Losses	16,875	15,105
Estimated Fair Value	100,579	104,767
Collateralized mortgage obligations
Available for sale:
Available-for-sale debt securities, amortized cost basis	17,980	18,757
Gross Unrealized Gains	5	19
Gross Unrealized Losses	1,871	1,702
Estimated Fair Value	16,114	17,074
Held to maturity:
Amortized Cost	36,590	37,437
Gross Unrealized Losses	7,777	7,276
Estimated Fair Value	28,813	30,161
Treasury securities
Held to maturity:
Amortized Cost	39,557	69,432
Gross Unrealized Losses	725	1,038
Estimated Fair Value	$ 38,832	$ 68,394

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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