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Inventories (Net of Reserves) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials $ 4,843 $ 5,723
Work-in process 1,007 1,121
Finished goods 19,585 16,137
Total $ 25,435 $ 22,981