XML 79 R61.htm IDEA: XBRL DOCUMENT v3.19.1
Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Raw materials $ 52,930 $ 37,337
Work in process 42,578 27,669
Finished goods 27,107 17,611
Inventories $ 122,615 $ 82,617