DISCONTINUED OPERATIONS (Details) $ in Thousands			3 Months Ended								12 Months Ended
	Nov. 03, 2015 School	Sep. 30, 2015 Campus	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) School	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jun. 18, 2013 Campus
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of schools | School											31
Number of campuses | Campus														5
Number of campuses held for sale | Campus		2
Result of discontinued operations [Abstract]
Net loss from discontinued operations			$ 3,163	$ (1,052)	$ (2,010)	$ (741)	$ 525	$ (37,818)	$ (2,728)	$ (1,290)	$ (642)	$ (41,311)	$ (24,031)
Impairments of goodwill and long-lived assets											216	3,201	0
Healthcare and Other Professions Business Segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of schools | School	18
Number of schools approved to divest | School	17
Ohio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of campuses | Campus														4
Kentucky [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of campuses | Campus														1
Seventeen Campuses [Member]
Result of discontinued operations [Abstract]
Revenue											112,882	122,133	125,916
Loss before income tax											(642)	(37,411)	(3,870)
Income tax expense (benefit)											0	(2,746)	0
Net loss from discontinued operations											$ (642)	(34,665)	(3,870)
Impairments of goodwill and long-lived assets												37,600	3,900
Five Training Sites [Member]
Result of discontinued operations [Abstract]
Impairments of goodwill and long-lived assets												2,100
Five Training Sites [Member] | Florida [Member]
Result of discontinued operations [Abstract]
Revenue												2,140	3,512
Loss before income tax												(6,731)	(2,635)
Income tax expense (benefit)												(85)	0
Net loss from discontinued operations												$ (6,646)	(2,635)
Five Campuses [Member]
Result of discontinued operations [Abstract]
Impairments of goodwill and long-lived assets													2,300
Five Campuses [Member] | Ohio [Member]
Result of discontinued operations [Abstract]
Revenue													7,724
Loss before income tax													(17,287)
Income tax expense (benefit)													239
Net loss from discontinued operations													$ (17,526)