INVESTMENTS AND FAIR VALUE MEASUREMENTS - AMORTIZED COST (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI
Cost or Amortized Cost	$ 103,600	$ 95,096
Unrealized Gains	1,335	290
Unrealized Losses	(8,312)	(1,669)
Fair Value	96,623	93,717
Mutual Fund
Debt and Equity Securities, FV-NI
Cost or Amortized Cost	40,297	50,000
Unrealized Gains	0	0
Unrealized Losses	(2,990)	(338)
Fair Value	37,307	49,662
Equity Securities
Debt and Equity Securities, FV-NI
Cost or Amortized Cost	45,633	38,100
Unrealized Gains	1,335	0
Unrealized Losses	(4,799)	(1,331)
Fair Value	42,169	36,769
Corporate Bond Securities
Debt and Equity Securities, FV-NI
Cost or Amortized Cost	17,670	6,996
Unrealized Gains	0	290
Unrealized Losses	(523)	0
Fair Value	$ 17,147	$ 7,286