XML 100 R86.htm IDEA: XBRL DOCUMENT v3.19.1
Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2017
Finished goods $ 41,557 $ 46,365 $ 54,357
Work in process 77,159 54,084 57,076
Raw materials 43,028 34,220 38,273
Supplies 817 531 42
Inventories $ 162,561 $ 135,200 $ 149,748