XML 71 R54.htm IDEA: XBRL DOCUMENT v3.8.0.1
Intangible Assets and Goodwill - Future Amortization Expense (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]    
2018 $ 644  
2019 644  
2020 614  
2021 475  
2022 408  
Thereafter 1,904  
Definite life intangibles, net $ 4,689 $ 5,333