Quarterly report pursuant to Section 13 or 15(d)

Liquidity and Management Plans (Details Textual)

v3.7.0.1
Liquidity and Management Plans (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Liquidity And Management Plans [Line Items]        
Engineering product development $ 575,368 $ 136,364    
Net income (loss) (12,473,140) (10,796,542)    
Cash and Cash Equivalents, at Carrying Value, Total 21,446,888 23,710,666 $ 31,258,637 $ 29,872,564
Proceeds from Issuance of Common Stock     $ 34,788,311  
Net Cash Provided by (Used in) Operating Activities, Continuing Operations, Total $ (10,007,645) $ (6,325,595)