MARKETABLE SECURITIES - Securities in Continuous Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Gross Unrealized Losses
Less Than 12 Months	$ (2,414)	$ (95)
12 Months or Longer	(396)	(1)
Total	(2,810)	(96)
Estimated Fair Value
Less Than 12 Months	205,928	28,268
12 Months or Longer	11,317	106
Total	217,245	28,374
Gross Unrealized Losses
Less Than 12 Months	(74)
12 Months or Longer	81
Total	155
Estimated Fair Value
Less Than 12 Months	10,688
12 Months or Longer	2,996
Total	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
Corporate bonds
Gross Unrealized Losses
Less Than 12 Months	(85)	(8)
12 Months or Longer	0	0
Total	(85)	(8)
Estimated Fair Value
Less Than 12 Months	11,418	2,493
12 Months or Longer	0	0
Total	11,418	2,493
Mortgage-backed securities
Gross Unrealized Losses
Less Than 12 Months	(1,383)	(87)
12 Months or Longer	(396)	0
Total	(1,779)	(87)
Estimated Fair Value
Less Than 12 Months	144,367	25,775
12 Months or Longer	11,317	0
Total	155,684	25,775
Gross Unrealized Losses
Less Than 12 Months	(37)
12 Months or Longer	0
Total	37
Estimated Fair Value
Less Than 12 Months	2,916
12 Months or Longer	0
Total	2,916
Collateralized mortgage obligations
Gross Unrealized Losses
Less Than 12 Months	(904)	0
12 Months or Longer	0	(1)
Total	(904)	(1)
Estimated Fair Value
Less Than 12 Months	40,172	0
12 Months or Longer	0	106
Total	40,172	$ 106
Municipal securities
Gross Unrealized Losses
Less Than 12 Months	(37)
12 Months or Longer	81
Total	118
Estimated Fair Value
Less Than 12 Months	7,772
12 Months or Longer	2,996
Total	$ 10,768