Quarterly report pursuant to Section 13 or 15(d)

Liquidity and Management Plans (Details Textual)

v3.4.0.3
Liquidity and Management Plans (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended
Nov. 30, 2015
Nov. 17, 2015
Apr. 24, 2015
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Liquidity And Management Plans [Line Items]              
Engineering product development       $ 136,364 $ 200,000    
Net income (numerator for basic and diluted earnings per share)       (10,796,542) (6,925,279)    
Cash and Cash Equivalents, at Carrying Value, Total       23,710,666 26,500,696 $ 29,872,564 $ 31,494,592
Stock Issued During Period, Shares, New Issues 3,000,005            
Proceeds From Shelf Registration Debt Or Equity Securities     $ 75,000,000        
Net Cash Provided by (Used in) Operating Activities, Continuing Operations, Total       $ (6,325,595) $ (4,784,068)    
Consummation of Offering Under Shelf Registration [Member]              
Liquidity And Management Plans [Line Items]              
Stock Issued During Period, Shares, New Issues   3,000,005          
Proceeds from Issuance of Common Stock $ 19,048,456 $ 19,333,032          
Proceeds From Shelf Registration Debt Or Equity Securities     $ 75,000,000