DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) School State Campus Segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Activities [Abstract]
Number of schools | School	22
Number of states in which schools operate across the United States | State	14
Number of campuses treated as destination schools | Campus	5
Number of reportable segments | Segment	3
Liquidity [Abstract]
Debt balance	$ 8,800
Cash and cash equivalents	9,741	$ 10,181	$ 38,644	$ 45,946
Additional borrowing capacity	21,000
Cash balance			$ 4,600
Income Taxes [Abstract]
Interest and penalties expense	$ 0	$ 0