Quarterly report pursuant to Section 13 or 15(d)

Liquidity and Management Plans (Details Textual)

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Liquidity and Management Plans (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 12, 2014
Sep. 10, 2014
Apr. 24, 2015
Apr. 30, 2014
Mar. 31, 2014
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Liquidity And Management Plans [Line Items]                      
Engineering product development           $ 225,000   $ 425,000      
Net loss           (6,146,582) $ 278,621 (13,071,861) $ (30,731,102)    
Cash and Cash Equivalents, at Carrying Value, Total           $ 20,508,268 $ 22,945,443 $ 20,508,268 22,945,443 $ 31,494,592 $ 1,953,780
Debt Conversion, Converted Instrument, Shares Issued               1,833,336      
Stock Issued During Period Shares Upon Conversion Of Debt Instrument Interest               96,792      
Proceeds from Other Equity               $ 0 900,000    
Payments for Commissions                 $ 100,000    
Proceeds from Issuance of Debt     $ 75,000,000                
Number Of Shares Issued To Landlord As Prepaid Rent And Tenant Improvements   41,563                  
Common Stock [Member]                      
Liquidity And Management Plans [Line Items]                      
Net loss               0      
Proceeds from Issuance of Common Stock               $ 21,000,000      
Stock Issued During Period, Shares, Issued for Services       210,527       15,000      
Proceeds from Other Equity       $ 700,000 $ 300,000            
Stock Issued During Period, Shares, Share-based Compensation, Gross 5,353                    
Stock Issued During Period, Shares, Other               6,927   3,285,714  
IPO [Member]                      
Liquidity And Management Plans [Line Items]                      
Stock Issued During Period, Shares, New Issues       4,600,000              
Proceeds from Issuance of Common Stock       $ 24,800,000