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Notes Payable and Other Noncurrent Liabilities (Details Textual) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Notes Payable and Other Noncurrent Liabilities (Additional Textual) [Abstract]    
Loan agreement borrowing $ 25,675  
Extended the maturity date of the existing loan from April 30, 2014 to March 31, 2016  
Maturity date of the University's existing loan, before amendment Apr. 30, 2014  
Decreased the interest rate on the outstanding balance from the BBA Libor Rate plus 225 basis points to the BBA Libor Rate plus 200 basis points  
Interest rate on the outstanding balance, before amendment, basis points 2.25%  
Interest rate on the outstanding balance, after amendment, basis points 2.00%  
Amount of revolving line of credit 50,000  
Revolving line of credit facility, expiration date March 31, 2016  
Amounts borrowed on the line of credit 0  
Maximum percentage of tangible net worth used to purchase interest in other entity 25.00%  
Amount available to be borrowed on the line of credit 32,844  
Long term deferred rent 6,512 2,029
Derivative liability for forward interest rate swap 628 686
Notes Payable through March 2016 [Member]
    
Notes Payable and Other Noncurrent Liabilities (Textual) [Abstract]    
Monthly payment of notes payable 143  
Interest rate of notes payable 2.00%  
Number of days of bank operating rate to calculate interest on notes payable 30 days  
Interest rate of notes payable, Minimum 2.30%  
Gift Annuities extending through 2019 [Member]
    
Notes Payable and Other Noncurrent Liabilities (Textual) [Abstract]    
Quarterly payment of notes payable $ 34  
Interest rate of notes payable, Minimum 10.00%  
Notes Payable extending in to march 2013 [Member]
    
Notes Payable and Other Noncurrent Liabilities (Textual) [Abstract]    
Interest rate of notes payable, Minimum 8.80%  
Interest rate of notes payable, Maximum 11.00%