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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Inventory [Line Items]    
Raw materials $ 7,115 $ 5,844
Work in process 3,918 3,496
Finished goods 7,134 5,567
Provision for excess and obsolete inventory (504) (478)
Total inventories $ 17,663 $ 14,429