Quarterly report pursuant to Section 13 or 15(d)

Stock options and warrants (Other common stock purchase options and warrants) (Narrative) (Details)

v3.3.0.814
Stock options and warrants (Other common stock purchase options and warrants) (Narrative) (Details) - USD ($)
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Stock options and warrants [Abstract]      
Shares issued for warrants exercised 0 1,161,570  
Value of shares issued for warrants exercised   $ 1,580,000  
Exercise price of warrants   $ 1.36  
Nonqualified [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards outstanding 3,455,935   3,455,935
Options granted    
Fair value of options vested $ 0 $ 0  
Unrecognized compensation expense $ 0