Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - 2014 Plan Activity (Details)

v3.10.0.1
Stockholders' Equity - 2014 Plan Activity (Details) - $ / shares
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]      
Available for future grants 805,749 1,065,003 443,565
Authorized   750,000  
Forfeited 381,021 202,322  
Granted (640,275) (330,884)  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Number of shares outstanding 578,813 915,572  
Options granted (in shares) 1,269,925 134,933  
Exercise of options to purchase common stock (in shares) 0 (284,370)  
Options forfeited (in shares) (154,670) (187,322)  
Number of shares outstanding 1,694,068 578,813 915,572
Weighted-average exercise (dollars per share) $ 4.57 $ 6.51 $ 4.96
Options granted, weighted average exercise price 3.99 11.19  
Options exercised, weighted average exercise price 0 3.77  
Options forfeited, weighted-average price $ 7 $ 6.44  
Restricted Stock (in shares)      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Number of shares outstanding 180,951 0  
Options granted (in shares) 207,623 195,951  
Exercise of options to purchase common stock (in shares) (65,600) 0  
Options forfeited (in shares) (226,351) (15,000)  
Number of shares outstanding 96,623 180,951 0
Weighted-average exercise (dollars per share) $ 4.01 $ 7.40 $ 0
Options granted, weighted average exercise price 2.42 7.28  
Options exercised, weighted average exercise price 5.78 0  
Options forfeited, weighted-average price $ 4.74 $ 5.78