SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Business Activities [Abstract]
Number of principal area of study			5
Number of schools operates across the United States			46
Number of training sites operates across the United States			5
Number of state in which schools operates across the United States	17		17
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 1,100	$ 800	$ 1,997	$ 2,130
New Accounting Pronouncements [Abstract]
Number of continuous statement require to present net income and other comprehensive income			1
Number of separate but consecutive statement require to present net income and other comprehensive income			2
Likelihood goodwill impairment test (in hundredths)			50.00%