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Debt - Additional Information (Detail) (USD $)
 12 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Nov. 10, 2011
Dec. 31, 2013
Minimum
Dec. 31, 2013
Maximum
Aug. 20, 2013
Fourth Amendment
Nov. 10, 2011
Term Credit Facility
Dec. 31, 2013
Term Credit Facility
Nov. 10, 2011
Revolving credit facility [Member]
Dec. 31, 2013
Revolving credit facility [Member]
Aug. 20, 2013
Senior Notes
Dec. 31, 2013
Senior Notes
Dec. 31, 2012
License agreement
Dec. 31, 2013
License agreement
Dec. 31, 2013
Parent Company and Domestic Subsidiaries
Dec. 31, 2013
Foreign Subsidiaries
Debt Instrument [Line Items]                                  
Line of credit facility amount outstanding                 $ 455,400,000                
Senior notes amount outstanding                       300,000,000 300,000,000        
Unused borrowings                     250,000,000            
Credit facilities, maximum borrowing capacity               500,000,000   250,000,000              
Credit facilities, maturity               5 years   5 years              
Deferred debt issuance cost       24,100,000                          
Debt issuance cost, paid 17,042,000 1,094,000 11,789,000                   5,900,000        
Borrowing under credit facility after amendment             300,000,000                    
Credit Facility maturity date Aug. 20, 2018           Aug. 20, 2018                    
Percentage of interest rate on notes             6.375%         6.375%          
Credit facility, interest rate description The applicable margin for borrowings under the Revolving Credit Facility is, based on the calculation of the applicable consolidated total leverage ratio, between 0.50% to 1.50% with respect to base rate borrowings and between 1.50% and 2.50% with respect to LIBOR based borrowings. Interest is due and payable monthly. The interest rate in effect at December 31, 2013 for the Credit Facility was 2.42%.                                
Credit facility, interest rate margin above federal fund rate 0.50%                                
Credit facility, interest rate margin above one-month LIBOR rate 1.00%                                
Credit facility, interest rate margin above base rate         0.50% 1.50%                      
Credit facility, interest rate margin above LIBOR rate         1.50% 2.50%                      
Credit facility, borrowing rate 2.42%                                
Issue price percentage of senior notes of the principal amount                       100.00%          
Maturity date of senior notes Aug. 20, 2020                     Aug. 15, 2020          
Debt issuance costs 5,276,000                       6,100,000        
Percentage of capital stock pledged as collateral                               100.00% 65.00%
Financed internally-used software                           14,800,000      
License agreement period                           5 years      
Other current liabilities 6,410,000 5,217,000                         3,000,000    
Other noncurrent liabilities                             6,300,000    
Annual payments due date                           April through 2016      
Total other liabilities                             $ 9,300,000