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Debt (Additional Information) (Detail) (USD $)
 0 Months Ended 1 Months Ended 3 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 0 Months Ended 0 Months Ended 3 Months Ended 1 Months Ended
Sep. 15, 2011
Installment
Jul. 31, 2011
Sep. 30, 2012
Jun. 30, 2012
Jan. 31, 2012
Jun. 30, 2011
Sep. 15, 2011
Convertible Notes Payable [Member]
Oct. 31, 2011
Convertible Notes Payable [Member]
Sep. 30, 2012
Loan Agreement [Member]
Sep. 30, 2012
Base Rate [Member]
Sep. 30, 2012
Base Rate [Member]
Minimum [Member]
Sep. 30, 2012
Base Rate [Member]
Maximum [Member]
Sep. 30, 2012
Libor Rate [Member]
Sep. 30, 2012
Libor Rate [Member]
Minimum [Member]
Sep. 30, 2012
Libor Rate [Member]
Maximum [Member]
Sep. 15, 2011
Term Loan Facility [Member]
Sep. 30, 2012
Term Loan Facility [Member]
Aug. 07, 2012
Term Loan Facility [Member]
Sep. 15, 2011
Revolving Credit Facility [Member]
Sep. 30, 2012
Revolving Credit Facility [Member]
Aug. 07, 2012
Revolving Credit Facility [Member]
Aug. 07, 2012
Letter of Credit [Member]
Aug. 07, 2012
Swingline Loan [Member]
Aug. 07, 2012
Term Loan [Member]
Jul. 31, 2011
Preferred Stock [Member]
Debt Disclosure [Line Items]                                                  
Repurchase of Series A convertible preferred stock                                                 12,041,700
Convertible series A preferred stock unpaid principal per share amount   $ 8,970,000 $ 8,970,000                                            
Repurchased shares aggregate consideration   $ 108,000,000 $ 108,000,000                                            
Repurchased shares amount paid in cash   40,000,000                                              
Issuance of convertible subordinated promissory notes in the aggregate principal amount   68,000,000                                              
Amount paid against the notes             34,000,000                                    
Principal amount outstanding             34,000,000                                    
Interest on notes               5.00%                                  
Increase in Interest on notes               0.02                                  
Final interest on notes         9.00%                                        
Difference between repurchase price and carrying value of the repurchased preferred stock           59,000,000                                      
Revolving credit facility                               35,000,000     5,000,000   50,000,000 5,000,000 5,000,000 50,000,000  
Maturity date of term loan                                     Sep. 15, 2016            
Number of installments to repaid term loan 60                                                
Term loan to repay a portion of outstanding convertible subordinated promissory notes                               34,000,000                  
LIBOR rate plus a spread under option 1     2.50%                                 0.25%          
LIBOR rate plus spread under option 2     3.00%                                 1.00%          
Percentage of commitment fee     0.15%                                            
Borrowed term loans under the Term Loan Facility                                   20,800,000              
Variable base rate                   0.50% 1.25% 1.75% 1.00% 2.25% 2.75%                    
Term loan quarterly installments until August 7, 2014     5,000,000                           1,250,000                
Term loan quarterly installments until August 7, 2015     6,875,000                           1,875,000                
Term loan quarterly installments until August 7, 2017     15,000,000                           2,500,000                
Excess cash flow percent     25.00%                                            
Leverage ratio     1.5                                            
Company's capital stock of existing and future foreign subsidiaries     65.00%                                            
Penal interest rate in case of default     2.00%                                            
Company made aggregate payments                 583,000,000                                
short-term debt     5,008,000 6,968,000                                          
long-term debt     $ 50,000,000