XML 61 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1
Estimated Future Amortization Expense of Other Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]    
2018 $ 3,759  
2019 3,734  
2020 3,518  
2021 3,518  
2022 2,368  
Thereafter 1,498  
Other intangible assets, net $ 18,395 $ 22,155