Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plan (Details)

v3.7.0.1
Equity Incentive Plan (Details) - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Weighted Average Exercise Price (in dollars per share):    
Outstanding 2 years 9 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) 142,725  
Exercised (in shares) (26,743)  
Outstanding, ending of period (in shares) 1,501,186 1,385,204
Exercisable at March 31, 2017 (in shares) 862,017  
Weighted Average Exercise Price (in dollars per share):    
Outstanding, beginning of period (in dollars per share) $ 6.89  
Granted (in dollars per share) 3.12  
Exercised (in dollars per share) 0.42  
Outstanding, ending of period (in dollars per share) 6.65 $ 6.89
Exercisable at March 31, 2017 (in dollars per share) $ 6.67  
Outstanding 7 years 6 months 7 years 6 months
Exercisable at March 31, 2017 7 years 1 month 6 days