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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Schedule of Inventory [Line Items]    
Inventory, Raw Materials, Net of Reserves $ 5,962 $ 5,172
Inventory, Work in Process, Net of Reserves 3,592 4,241
Inventory, Finished Goods, Net of Reserves 6,286 4,555
Inventories $ 15,840 $ 13,968