MARKETABLE SECURITIES - Securities in Continuous Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Gross Unrealized Losses
Less Than 12 Months	$ (8,584)	$ (2,414)
12 Months or Longer	(10,984)	(396)
Total	(19,568)	(2,810)
Estimated Fair Value
Less Than 12 Months	112,703	205,928
12 Months or Longer	66,701	11,317
Total	179,404	217,245
Gross Unrealized Losses
Less Than 12 Months	(20,637)	(74)
12 Months or Longer	(13,961)	(81)
Total held to maturity	(34,598)	(155)
Estimated Fair Value
Less Than 12 Months	348,119	10,688
12 Months or Longer	64,714	2,996
Total	412,833	13,684
U.S. government agencies
Gross Unrealized Losses
Less Than 12 Months		(42)
12 Months or Longer		0
Total		(42)
Estimated Fair Value
Less Than 12 Months		9,971
12 Months or Longer		0
Total		9,971
Gross Unrealized Losses
Less Than 12 Months	(1,259)
12 Months or Longer	0
Total held to maturity	(1,259)
Estimated Fair Value
Less Than 12 Months	7,882
12 Months or Longer	0
Total	7,882
Treasury Securities
Gross Unrealized Losses
Less Than 12 Months	(2,921)
12 Months or Longer	0
Total held to maturity	(2,921)
Estimated Fair Value
Less Than 12 Months	130,814
12 Months or Longer	0
Total	130,814
Corporate bonds
Gross Unrealized Losses
Less Than 12 Months	(1,518)	(85)
12 Months or Longer	(659)	0
Total	(2,177)	(85)
Estimated Fair Value
Less Than 12 Months	20,323	11,418
12 Months or Longer	7,464	0
Total	27,787	11,418
Mortgage-backed securities
Gross Unrealized Losses
Less Than 12 Months	(6,150)	(1,383)
12 Months or Longer	(9,406)	(396)
Total	(15,556)	(1,779)
Estimated Fair Value
Less Than 12 Months	74,146	144,367
12 Months or Longer	55,826	11,317
Total	129,972	155,684
Gross Unrealized Losses
Less Than 12 Months	(8,355)	(37)
12 Months or Longer	(6,353)	0
Total held to maturity	(14,708)	(37)
Estimated Fair Value
Less Than 12 Months	80,556	2,916
12 Months or Longer	37,429	0
Total	117,985	2,916
Collateralized mortgage obligations
Gross Unrealized Losses
Less Than 12 Months	(908)	(904)
12 Months or Longer	(919)	0
Total	(1,827)	(904)
Estimated Fair Value
Less Than 12 Months	16,575	40,172
12 Months or Longer	3,411	0
Total	19,986	40,172
Gross Unrealized Losses
Less Than 12 Months	(1,031)
12 Months or Longer	(6,394)
Total held to maturity	(7,425)
Estimated Fair Value
Less Than 12 Months	10,750
12 Months or Longer	23,584
Total	34,334
Municipal securities
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
Gross Unrealized Losses
Less Than 12 Months	(7,071)	(37)
12 Months or Longer	(1,214)	(81)
Total held to maturity	(8,285)	(118)
Estimated Fair Value
Less Than 12 Months	118,117	7,772
12 Months or Longer	3,701	2,996
Total	$ 121,818	$ 10,768