COVID-19 UPDATE (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended
	Apr. 01, 2021	Mar. 31, 2021	Jul. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Subsequent Event [Line Items]
Coronavirus Aid, Relief, and Economic Security (“CARES”) Funds Received				$ 9,139
Medicare Accelerated and Advance Payment				105,255
Repayment of Medicare Accelerated and Advance Payment Program		$ 102,023	$ 3,232
Unapplied state relief funds		5,700		5,700		$ 6,520
FMAP payments received				15,645	$ 730
Revenue, FMAP payments received				16,465
Total deferred payment of social security taxes		48,309		48,309
Deferred payment of social security taxes, current		24,155		24,155
Deferred payment of social security taxes, noncurrent		$ 24,154		$ 24,154
Subsequent Event
Subsequent Event [Line Items]
Coronavirus Aid, Relief, and Economic Security (“CARES”) Funds Received	$ 2,083