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Purchase commitments (Details Narrative) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]    
Rental expense for operating lease $ 427,827 $ 373,143
Deferred rent 288,773 179,527
Non-cancelable purchase commitments for inventory $ 2,048,000 $ 3,198,000