COVID-19 PANDEMIC (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Unusual or Infrequent Item, or Both [Line Items]
COVID-19, PHSSEF funds received	$ 51,607		$ 51,607
COVID-19, PHSSEF revenue	2,344	$ 9,563	21,335	$ 14,711
Proceeds from stimulus funds used to purchase property and equipment			954	898
COVID-19, remaining stimulus funds	8,174		8,174		$ 25,900
COVID-19, Medicaid revenue from states	4,516	6,327	13,775	11,709
Medicaid and Hospice revenue	5,038	6,645	14,909	11,709
COVID-19, Medicaid sequestration amount	644	724	2,004	1,031
COVID-19, salaries expense	6,018	8,241	19,847	11,349
COVID-19, supplies expense	$ 1,152	$ 4,430	5,731	$ 5,642
Other operating income
Unusual or Infrequent Item, or Both [Line Items]
COVID-19, Medicaid revenue from states			$ 877