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Software and Other Intangible Assets - Estimated Amortization Expense for Future Fiscal Years Based on Capitalized Intangible Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Net Balance $ 195,098 $ 203,634
Software [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2017 14,256  
2018 47,196  
2019 39,324  
2020 29,967  
2021 19,542  
2022 8,394  
Thereafter 5,791  
Net Balance 164,470  
Other Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2017 4,892  
2018 19,061  
2019 18,505  
2020 17,609  
2021 17,103  
2022 16,942  
Thereafter 100,986  
Net Balance $ 195,098