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Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2012
Significant Accounting Policies [Abstract]  
Schedule of operating expenses, reported and reclassified on consolidated statements of income
 
   
December 31, 2010
 
   
As
Reported
   
As
Reclassified
 
Instruction and educational support
  $ 205,212     $ 269,557  
Marketing(1)
    114,164       70,270  
Admissions advisory
          25,277  
General and administration
    101,585       55,857  
    $ 420,961     $ 420,961  
 
 
(1)
This line item was labeled Marketing and admissions expense on an “as reported” basis in 2010. Marketing and admissions expenses related to student support services were reclassified to Instruction and educational support expense, those related to admissions to Admissions advisory expense, and those related to corporate overhead were reclassified to General and administration expense in 2010.
 
Schedule of reconciliation of shares used to calculate basic and diluted earnings per share
 
   
2010
   
2011
   
2012
 
Weighted average shares outstanding used to compute basic earnings per share
    13,426       11,906       11,390  
Incremental shares issuable upon the assumed exercise of stock options
    36       8        
Unvested restricted stock
    73       29       50  
Shares used to compute diluted earnings per share
    13,535       11,943       11,440