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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
Mar. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Net Balance $ 162,845 $ 168,127
Software [Member]    
Finite-Lived Intangible Assets [Line Items]    
2019 37,383  
2020 40,353  
2021 27,637  
2022 13,167  
2023 6,633  
Thereafter 5,639  
Net Balance 130,812  
Other Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
2019 16,340  
2020 20,992  
2021 20,506  
2022 20,359  
2023 20,053  
Thereafter 64,595  
Net Balance $ 162,845