Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plan (Details)

v3.8.0.1
Equity Incentive Plan (Details) - $ / shares
 9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Weighted Average Exercise Price (in dollars per share):    
Weighted average remaining life, outstanding stock options 2 years 3 months 18 days 2 years 6 months
Employee stock option    
Stock Options (in shares):    
Outstanding, beginning of period (in shares) 1,385,204  
Granted (in shares) 167,725  
Exercised (in shares) (26,743)  
Forfeitures/Expired/Exchanged (in shares) (125,551)  
Outstanding, ending of period (in shares) 1,400,635 1,385,204
Exercisable at June 30, 2017 (in shares) 984,554  
Weighted Average Exercise Price (in dollars per share):    
Outstanding, beginning of period (in dollars per share) $ 6.89  
Granted (in dollars per share) 2.99  
Exercised (in dollars per share) 0.42  
Forfeitures/Expired/Exchanged (in dollars per share) 7.39  
Outstanding, ending of period (in dollars per share) 6.50 $ 6.89
Exercisable at June 30, 2017 (in dollars per share) $ 6.64  
Weighted average remaining life, outstanding stock options 7 years 1 month 6 days 7 years 6 months
Weighted average remaining life, exercisable stock options 6 years 9 months 18 days