Quarterly report pursuant to Section 13 or 15(d)

Inventory (Narrative) (Details)

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Inventory (Narrative) (Details) - USD ($)
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Inventory [Line Items]      
Inventory reserves $ 464,693   $ 539,027
Inventory, cost capitalized during period 791,000 $ 0  
Production Materials      
Inventory [Line Items]      
Inventory reserves related to production issues and research and development 120,000    
In Process Research and Development      
Inventory [Line Items]      
Inventory reserves related to production issues and research and development $ 123,000 $ 45,000