XML 71 R50.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventories [Abstract]    
Finished goods $ 46,729 $ 36,968
Work-in-process 5,194 1,677
Raw materials and supplies 6,215 6,765
Inventories $ 58,138 $ 45,410