MARKETABLE SECURITIES - Schedule of Securities with Gross Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Gross Unrealized Losses
Less Than 12 Months	$ (2,523)	$ (20,637)
12 Months or Longer	(38,198)	(13,961)
Total	(40,721)	(34,598)
Estimated Fair Value
Less Than 12 Months	128,797	348,119
12 Months or Longer	218,364	64,714
Total	347,161	412,833
Gross Unrealized Losses
Less Than 12 Months	(457)	(8,584)
12 Months or Longer	(24,333)	(10,984)
Total	(24,790)	(19,568)
Estimated Fair Value
Less Than 12 Months	24,759	112,703
12 Months or Longer	139,610	66,701
Total	164,369	179,404
U.S. government agencies
Gross Unrealized Losses
Less Than 12 Months	0	(1,259)
12 Months or Longer	(1,357)	0
Total	(1,357)	(1,259)
Estimated Fair Value
Less Than 12 Months	0	7,882
12 Months or Longer	7,897	0
Total	7,897	7,882
Corporate bonds
Gross Unrealized Losses
Less Than 12 Months	0	(1,518)
12 Months or Longer	(3,353)	(659)
Total	(3,353)	(2,177)
Estimated Fair Value
Less Than 12 Months	0	20,323
12 Months or Longer	26,549	7,464
Total	26,549	27,787
Mortgage-backed securities
Gross Unrealized Losses
Less Than 12 Months	0	(8,355)
12 Months or Longer	(19,631)	(6,353)
Total	(19,631)	(14,708)
Estimated Fair Value
Less Than 12 Months	(0)	80,556
12 Months or Longer	102,600	37,429
Total	102,600	117,985
Gross Unrealized Losses
Less Than 12 Months	(454)	(6,150)
12 Months or Longer	(18,848)	(9,406)
Total	(19,302)	(15,556)
Estimated Fair Value
Less Than 12 Months	21,642	74,146
12 Months or Longer	98,588	55,826
Total	120,230	129,972
Collateralized mortgage obligations
Gross Unrealized Losses
Less Than 12 Months	0	(1,031)
12 Months or Longer	(8,440)	(6,394)
Total	(8,440)	(7,425)
Estimated Fair Value
Less Than 12 Months	0	10,750
12 Months or Longer	30,084	23,584
Total	30,084	34,334
Gross Unrealized Losses
Less Than 12 Months	(3)	(908)
12 Months or Longer	(2,132)	(919)
Total	(2,135)	(1,827)
Estimated Fair Value
Less Than 12 Months	3,117	16,575
12 Months or Longer	14,473	3,411
Total	17,590	19,986
Municipal securities
Gross Unrealized Losses
Less Than 12 Months	(798)	(7,071)
12 Months or Longer	(8,770)	(1,214)
Total	(9,568)	(8,285)
Estimated Fair Value
Less Than 12 Months	61,215	118,117
12 Months or Longer	77,783	3,701
Total	138,998	121,818
Gross Unrealized Losses
Less Than 12 Months		(8)
12 Months or Longer		0
Total		(8)
Estimated Fair Value
Less Than 12 Months		1,659
12 Months or Longer		0
Total		1,659
US Treasury Securities [Member]
Gross Unrealized Losses
Less Than 12 Months	(1,725)	(2,921)
12 Months or Longer	0	0
Total	(1,725)	(2,921)
Estimated Fair Value
Less Than 12 Months	67,582	130,814
12 Months or Longer	0	0
Total	$ 67,582	$ 130,814