XML 53 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Raw material $ 1,143 $ 1,649
Work-in-process 6,323 7,963
Finished goods 8,694 5,132
Supplies 792 723
Total inventories $ 16,952 $ 15,467