COVID-19 PANDEMIC (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Unusual or Infrequent Items, or Both [Abstract]
COVID-19, Medicare stimulus funds received	$ 31,180		$ 31,180
OTHER OPERATING INCOME	5,148	$ 0	5,148	$ 0
Proceeds from stimulus funds used to purchase property and equipment			712	$ 0
COVID-19, remaining stimulus funds	25,320		25,320
COVID-19, Medicaid funds received	4,203		5,064
Payroll and employee benefits, less current portion	3,185		3,185		$ 0
COVID-19, Medicaid sequestration amount	307		307
COVID-19, salaries expense	2,200		2,600
COVID-19, supplies expense	1,100		1,200
COVID-19, travel expense	$ 100		$ 100