MARKETABLE SECURITIES - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available for sale:
Available-for-sale debt securities, amortized cost basis	$ 288,167	$ 215,380
Gross Unrealized Gains	3,338	1,215
Gross Unrealized Losses	13,938	20,400
Estimated Fair Value	277,567	196,195
Held to maturity:
Amortized Cost	341,911	404,208
Gross Unrealized Gains	578	923
Gross Unrealized Losses	23,176	30,608
Estimated Fair Value	319,313	374,523
Treasury security
Available for sale:
Available-for-sale debt securities, amortized cost basis	14,968
Gross Unrealized Gains	3
Gross Unrealized Losses	4
Estimated Fair Value	14,967
U.S. government agencies
Held to maturity:
Amortized Cost	9,410	9,292
Gross Unrealized Gains	0	0
Gross Unrealized Losses	736	1,066
Estimated Fair Value	8,674	8,226
Corporate bonds
Available for sale:
Available-for-sale debt securities, amortized cost basis	27,823	29,882
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,823	3,077
Estimated Fair Value	26,000	26,805
Municipal securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	2,319	2,322
Gross Unrealized Gains	122	182
Gross Unrealized Losses	0	0
Estimated Fair Value	2,441	2,504
Held to maturity:
Amortized Cost	156,506	168,175
Gross Unrealized Gains	578	923
Gross Unrealized Losses	5,538	6,123
Estimated Fair Value	151,546	162,975
Mortgage-backed securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	227,136	164,419
Gross Unrealized Gains	3,202	1,014
Gross Unrealized Losses	10,904	15,621
Estimated Fair Value	219,434	149,812
Held to maturity:
Amortized Cost	111,767	119,872
Gross Unrealized Gains	0	0
Gross Unrealized Losses	10,945	15,105
Estimated Fair Value	100,822	104,767
Collateralized mortgage obligations
Available for sale:
Available-for-sale debt securities, amortized cost basis	15,921	18,757
Gross Unrealized Gains	11	19
Gross Unrealized Losses	1,207	1,702
Estimated Fair Value	14,725	17,074
Held to maturity:
Amortized Cost	34,460	37,437
Gross Unrealized Losses	5,694	7,276
Estimated Fair Value	28,766	30,161
Treasury securities
Held to maturity:
Amortized Cost	29,768	69,432
Gross Unrealized Losses	263	1,038
Estimated Fair Value	$ 29,505	$ 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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