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Basis of Presentation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 12 Months Ended 31 Months Ended
Oct. 31, 2009
Jun. 30, 2014
Education_Systems
Oct. 31, 2013
Students
Jun. 30, 2013
Jun. 30, 2014
Title IV [Member]
Minimum [Member]
Rate
Jun. 30, 2013
Title IV [Member]
Minimum [Member]
Rate
Jun. 30, 2014
Title IV [Member]
Maximum [Member]
Rate
Jun. 30, 2013
Title IV [Member]
Maximum [Member]
Rate
Jun. 30, 2014
Title IV [Member]
Weighted Average [Member]
Rate
Jun. 30, 2013
Title IV [Member]
Weighted Average [Member]
Rate
Dec. 31, 2012
Common Stock
Number of students     125,560                
Online platforms   3                  
Number of education systems   4                  
Common Stock, Shares, Issued 23,000,000                    
Common stock, par value $ 0.01 $ 0.01   $ 0.01              
Price Per Share $ 18.00                    
Stock Repurchased During Period, Shares                     18,900,000
Stock Repurchased During Period, Value                     $ 328.6
Concentration Risk, Percentage         55.00% 56.00% 81.00% 82.00% 76.00% 76.00%