XML 34 R31.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Summary of Significant Accounting Policies (Details Textual) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2011
Acre
Jun. 30, 2010
Dec. 31, 2010
Jun. 30, 2009
Derivative Contract Details (Textuals) [Abstract]        
Inception date of derivative agreements Apr. 01, 2009      
Maturity date of derivative agreements Apr. 30, 2014      
Summary of Significant Accounting Policies (Textuals) [Abstract]        
Number of derivative instruments held 2 2 2 2
Loss on derivatives included as a component of other comprehensive income, net of taxes $ 1 $ 354    
Interest expense on derivatives related to credit risk 11      
Amount agreed to pay to settle the qui tam matter as restricted cash 0   5,200  
Pledged collateral as noncurrent restricted cash 555   760  
Reclassified gains or losses on derivative instruments from accumulated other comprehensive (loss) income into earnings 0      
Reduced pledge collateral 555      
Average days from the date of receipt in which funds remain as restricted cash and cash equivalents 60 to 90 Days      
Area of the Company's campus in Phoenix, Arizona 110      
Reduction in revenue due to scholarships offered to students 34,939 25,043    
Collaboration agreement cost     8,500  
Arrangement expense 403 4,975    
Due to related party 67   9,367  
Segment reporting operating income or expense   0    
Interest Rate Corridor [Member]
        
Derivative Contract Details (Textuals) [Abstract]        
Inception date of derivative agreements Jul. 01, 2009      
Maturity date of derivative agreements Apr. 30, 2014      
Notional amount of interest rate swap 11,055      
Fair value of interest rate corridor included in other assets 10   27  
Interest rate payable on interest rate corridor if 30 Day LIBOR is less than 4% 30 Day LIBOR 30 Day LIBOR 30 Day LIBOR  
Interest rate payable on interest rate corridor 30 Day LIBOR equal to 4% through 6% 4.00% 4.00% 4.00%  
Interest rate payable on interest rate corridor 30 Day LIBOR exceeds 6% 30 Day LIBOR less 2% 30 Day LIBOR less 2% 30 Day LIBOR less 2%  
Interest Rate Swap [Member]
        
Derivative Contract Details (Textuals) [Abstract]        
Inception date of derivative agreements May 01, 2010      
Maturity date of derivative agreements Apr. 30, 2014      
Notional amount of interest rate swap 11,055      
Interest rate receivable on interest rate swap amortizing notional amount 30 Day LIBOR 30 Day LIBOR 30 Day LIBOR  
Fixed Interest rate payable on interest rate swap amortizing notional amount 3.245% 3.245% 3.245%  
Fair value of interest rate swap is a liability ,which is included in other non current liability $ 659   $ 686