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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials $ 11,467 $ 7,115
Work in process 5,116 3,918
Finished goods 9,820 7,134
Provision for excess and obsolete inventory (534) (504)
Total inventories $ 25,869 $ 17,663