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Inventories (Details Textual) (USD $)
In Millions, unless otherwise specified
1 Months Ended
Mar. 31, 2015
Jan. 31, 2014
Dec. 31, 2014
Inventories (Textual) [Abstract]      
Shelf life 6 years 5 years  
Extended shelf life 7 years 6 years  
Reserve for potential obsolescence of products $ 3.0us-gaap_InventoryValuationReserves   $ 3.2us-gaap_InventoryValuationReserves