XML 48 R37.htm IDEA: XBRL DOCUMENT v3.7.0.1
Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Inventories Details    
Finished goods $ 3,204 $ 2,946
Production supplies 3,007 2,636
Raw materials 3,101 2,082
Total inventories $ 9,312 $ 7,664