SUBSEQUENT EVENTS (Details)		3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 09, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) Population	May 14, 2018 Standard
Subsequent Events Details [Abstract]
Loss on sale of asset				$ (110,000)	$ 89,000
Number of standards of accreditation | Standard							7
Revenues		$ 61,120,000	$ 61,865,000	123,009,000	127,144,000
Net loss		$ (4,104,000)	$ (6,771,000)	$ (10,978,000)	$ (17,700,000)
Lincoln College of New England [Member]
Subsequent Events Details [Abstract]
Revenues						$ 8,400,000
Net loss						$ (1,600,000)
Population | Population						397
Subsequent Event [Member]
Subsequent Events Details [Abstract]
Cash purchase price	$ 2,550,000
Real estate brokerage fee percentage	5.00%
Loss on sale of asset	$ (400,000)