XML 25 R13.htm IDEA: XBRL DOCUMENT v3.5.0.2
Warrants
9 Months Ended
Sep. 30, 2016
Stockholders' Equity Note [Abstract]  
Warrants
7. Warrants                  
 
At September 30, 2016 and December 31, 2015, we had 7,603,141 and 7,195,997 warrants outstanding, respectively, and exercisable with a weighted average exercise price of $4.46 and $4.60, respectively. The outstanding warrants have expiration dates between May 2017 and May 2021.