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Nature of Operations (Detail Textuals 1) (USD $)
1 Months Ended 6 Months Ended
Mar. 27, 2013
Feb. 28, 2013
Jun. 30, 2013
Dec. 31, 2012
May 08, 2013
Air Liquide Investissements d'Avenir et de Demonstration ("Air Liquide")
Dec. 31, 2012
Silicon Valley Bank
Line of Credit
Loan Agreement
Line of Credit Facility [Line Items]            
Borrowing capacity under SVB loan facility           $ 15,000,000
Outstanding amount under loan agreement           3,400,000
Proceeds from issuance of public offerings held in February   2,300,000        
Strategic Investment From Joint Venture         6,500,000  
Proceeds from exercise of warrants   2,800,000 2,849,460      
Sale-leaseback transaction in real estate in Latham, NY 2,600,000          
Total liabilities     $ 26,968,751 $ 24,429,699