MARKETABLE SECURITIES - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Available for sale:
Available-for-sale debt securities, amortized cost basis	$ 215,380	$ 208,165
Gross Unrealized Gain	1,215	330
Gross Unrealized Loss	20,400	19,568
Estimated Fair Value	196,195	188,927
Held to maturity:
Amortized Cost	404,208	509,008
Gross Unrealized Gains	923	658
Gross Unrealized Losses	30,608	34,598
Estimated Fair Value	374,523	475,068
U.S. government agencies
Available for sale:
Available-for-sale debt securities, amortized cost basis	9,292	9,141
Gross Unrealized Gain	0	0
Gross Unrealized Loss	1,066	1,259
Estimated Fair Value	8,226	7,882
Treasury securities
Held to maturity:
Amortized Cost	69,432	133,735
Gross Unrealized Losses	1,038	2,921
Estimated Fair Value	68,394	130,814
Corporate bonds
Available for sale:
Available-for-sale debt securities, amortized cost basis	29,882	29,964
Gross Unrealized Gain	0	0
Gross Unrealized Loss	3,077	2,177
Estimated Fair Value	26,805	27,787
Municipal securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	2,322	10,324
Gross Unrealized Gain	182	326
Gross Unrealized Loss	0	8
Estimated Fair Value	2,504	10,642
Held to maturity:
Amortized Cost	168,175	191,680
Gross Unrealized Gains	923	658
Gross Unrealized Losses	6,123	8,285
Estimated Fair Value	162,975	184,053
Mortgage-backed securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	164,419	145,896
Gross Unrealized Gain	1,014	1
Gross Unrealized Loss	15,621	15,556
Estimated Fair Value	149,812	130,341
Held to maturity:
Amortized Cost	119,872	132,693
Gross Unrealized Gains	0	0
Gross Unrealized Losses	15,105	14,708
Estimated Fair Value	104,767	117,985
Collateralized mortgage obligations
Available for sale:
Available-for-sale debt securities, amortized cost basis	18,757	21,981
Gross Unrealized Gain	19	3
Gross Unrealized Loss	1,702	1,827
Estimated Fair Value	17,074	20,157
Held to maturity:
Amortized Cost	37,437	41,759
Gross Unrealized Losses	7,276	7,425
Estimated Fair Value	$ 30,161	$ 34,334

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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