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Commitments And Contingencies (Detail) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 0 Months Ended
Sep. 16, 2011
Apr. 22, 2011
Dec. 03, 2010
Dec. 31, 2011
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Campus
May 03, 2012
Aug. 12, 2011
Jun. 15, 2011
Jun. 03, 2011
Jul. 14, 2010
Sep. 27, 2007
Jun. 07, 2012
ACCSC [Member]
Campus
Jun. 07, 2012
ACCSC And ACICS [Member]
Campus
Jul. 14, 2008
False Claims Act Lawsuit [Member]
Apr. 10, 2008
Surrett [Member]
Mar. 05, 2008
Surrett [Member]
Jun. 30, 2012
Banks [Member]
Jun. 30, 2012
Abrica [Member]
Jun. 30, 2012
Aguilar [Member]
Jun. 30, 2012
Alday [Member]
Jun. 30, 2012
Ackerman [Member]
Jun. 30, 2012
Arechiga [Member]
Mar. 31, 2012
Anderson [Member]
Mar. 31, 2012
Allen [Member]
Mar. 14, 2012
Fahey [Member]
Product Liability Contingency [Line Items]                                                      
Accrual for legal fees and settlements       $ 15,400,000 $ 15,700,000 $ 15,400,000                                          
Number of student plaintiffs         5               36           316 373 88 73 27 60 58 12  
Number of opt-out Individuals                 5 31 115                                
Number of complaints related and transferred to judge                     3                                
Number of students in class   2,330 2,300                                                
Number of alleged claims for equitable relief                                   2                  
Number of claims added for money damages                                 2                    
Opt-out period expiration date   2011-06-20                                                  
Additional individuals not to belong in class         300                                            
Number of mass actions filed         8                                            
Number of former employees who filed complaint                               4                      
Amount agreed to pay to individual                                                     200
Pretax charge of estimated loss       6,000,000                                              
Additional number of students joining litigation 19                                                    
Notification received from ACICS               71                                      
Number of additional ACICS accredited campuses             24                                        
Percentage of ACICS standard placement rate             65.00%                                        
Number of campuses already subject to additional ACICS oversight             36                                        
Placement percentage minimum for schools on ACICS probation               40.00%                                      
Probation schools percentage of consolidated revenue           3.60%                                          
Total number of schools on ACICS probation status               4                                      
Number of campuses accredited by the Institutions                           10 9                        
Percentage of employment placement rate data                           100.00%                          
Number of findings from program review                       6                              
Number of findings deemed to be systemic                       2                              
Number of findings that were isolated and related to processing errors                       4                              
Estimated potential reimbursements by CTU           5,000,000                                          
Other accrued liability for certain legal or regulatory matters           $ 5,000,000