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Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Inventory [Line Items]    
Raw Materials $ 3,607 $ 4,001
Work in process 1,985 1,860
Finished Goods 3,221 4,143
Inventory, gross 8,813 10,004
Less current inventory (5,098) (5,064)
Inventory Value Before Reserves 3,715 4,940
Less reserve for slow moving and excess inventory (2,821) (3,949)
Inventories, net non-current $ 894 $ 991