DISCONTINUED OPERATIONS (Details) (USD $)	3 Months Ended										12 Months Ended
	Dec. 31, 2014 Site		Sep. 30, 2014		Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 Site	Dec. 31, 2013	Dec. 31, 2012	Dec. 03, 2014 Campus	Jun. 18, 2013 Campus	Jul. 31, 2012 Campus
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of campuses	5										5			5	5	7
Result of discontinued operations [Abstract]
Net loss from discontinued operations	$ (2,474,000)	[1]	$ (2,717,000)	[2]	$ (652,000)	$ (803,000)	$ (11,620,000)	$ (2,840,000)	$ (3,098,000)	$ (2,603,000)	$ (6,646,000)	$ (20,161,000)	$ (22,267,000)
Ohio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of campuses															4
Kentucky [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of campuses															1
Five Campuses [Member]
Result of discontinued operations [Abstract]
Revenue													8,500,000
Loss before income tax													(22,142,000)
Income tax expense (benefit)													(8,837,000)
Net loss from discontinued operations													(13,305,000)
Impairments of goodwill and long-lived assets											2,100,000	2,300,000	8,700,000
Five Campuses [Member] | Florida [Member]
Result of discontinued operations [Abstract]
Revenue											2,140,000	3,512,000	2,610,000
Loss before income tax											(6,731,000)	(2,635,000)	(1,274,000)
Income tax expense (benefit)											(85,000)	0	(508,000)
Net loss from discontinued operations											(6,646,000)	(2,635,000)	(766,000)
Seven Campuses [Member]
Result of discontinued operations [Abstract]
Impairments of goodwill and long-lived assets													9,500,000
Seven Campuses [Member] | Ohio [Member]
Result of discontinued operations [Abstract]
Revenue											7,724,000	19,924,000
Loss before income tax											(17,287,000)	(13,641,000)
Income tax expense (benefit)											239,000	(5,444,000)
Net loss from discontinued operations											$ (17,526,000)	$ (8,197,000)

[1] Includes impairment of long-lived assets from continuing operations of $1.5 million.

[2] Includes impairment of goodwill and long-lived assets from continuing operations of $39.3 million.