FINANCIAL AID AND REGULATORY COMPLIANCE (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
FINANCIAL AID AND REGULATORY COMPLIANCE [Abstract]
Percentage of net revenues on cash basis indirectly derived from funds (in hundredths)	81.00%	84.00%	83.00%
Maximum specified percentage of net revenues on cash basis indirectly derived from funds (in hundredths)		90.00%
Percentage of net revenues on cash basis indirectly derived from funds by one institution	93.00%
Period over which entity became ineligible after receiving specified percentage as revenue from funds	2 years
Period for which entity may not reapply for eligibility	2 years
Number of institution violated 90/10 rule	1
Standard composite score for financial responsibility, minimum	-1
Standard composite score for financial responsibility, maximum	+3
Composite score for financial responsibility	1.6	2.1	1.8