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, 2022	Dec. 31, 2021
Available for sale:
Available-for-sale debt securities, amortized cost basis	$ 208,165	$ 341,628
Gross Unrealized Gain	330	3,388
Gross Unrealized Loss	19,568	2,810
Estimated Fair Value	188,927	342,206
Held to maturity:
Amortized Cost	509,008	184,263
Gross Unrealized Gains	658	8,364
Gross Unrealized Losses	34,598	155
Estimated Fair Value	475,068	192,472
U.S. government agencies
Available for sale:
Available-for-sale debt securities, amortized cost basis	9,141	10,013
Gross Unrealized Gain	0
Gross Unrealized Loss	1,259	42
Estimated Fair Value	7,882	9,971
Treasury securities
Held to maturity:
Amortized Cost	133,735
Gross Unrealized Losses	2,921
Estimated Fair Value	130,814
Corporate bonds
Available for sale:
Available-for-sale debt securities, amortized cost basis	29,964	35,080
Gross Unrealized Gain	0	940
Gross Unrealized Loss	2,177	85
Estimated Fair Value	27,787	35,935
Municipal securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	10,324	181,310
Gross Unrealized Gain	326
Gross Unrealized Loss	8
Estimated Fair Value	10,642
Mortgage-backed securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	145,896	221,610
Gross Unrealized Gain	1	1,477
Gross Unrealized Loss	15,556	1,779
Estimated Fair Value	130,341	221,308
Held to maturity:
Amortized Cost	132,693	2,953
Gross Unrealized Gains	0
Gross Unrealized Losses	14,708	37
Estimated Fair Value	117,985	2,916
Collateralized mortgage obligations
Available for sale:
Available-for-sale debt securities, amortized cost basis	21,981	74,925
Gross Unrealized Gain	3	971
Gross Unrealized Loss	1,827	904
Estimated Fair Value	20,157	74,992
Held to maturity:
Amortized Cost	41,759
Gross Unrealized Losses	7,425
Estimated Fair Value	34,334
Municipal securities
Available for sale:
Gross Unrealized Gain		8,364
Gross Unrealized Loss		118
Held to maturity:
Amortized Cost	191,680
Gross Unrealized Gains	658
Gross Unrealized Losses	8,285
Estimated Fair Value	$ 184,053	$ 189,556

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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