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Inventories (Details) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Mar. 31, 2015
Inventories [Abstract]      
Raw materials $ 4,584,000 $ 2,385,000  
Work-in-process 8,000 793,000  
Finished goods 1,089,000 1,407,000  
Inventories $ 5,680,959 $ 4,584,844  
Inventory adjustment     $ 240,000