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Note 6 - Inventories (Details) - Inventories (USD $)
Mar. 31, 2014
Dec. 31, 2013
Inventories [Abstract]    
Raw materials $ 6,109,938 $ 5,926,030
Work-in-process 2,230,635 2,308,233
Finished goods 4,640,922 2,762,522
Total $ 12,981,495 $ 10,996,785