Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Outstanding Options (Details)

v3.19.3
Stock-Based Compensation - Schedule of Outstanding Options (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Beginning options outstanding (in shares) 264,246  
Stock options canceled (in shares) 245,998  
Ending options outstanding (in shares) 18,248 264,246
Options exercisable (in shares) 18,248  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Options outstanding, weighted average exercise price (in usd per share) $ 1.74 $ 2.84
Stock options canceled, weighted average exercise price (in usd per share) 2.92  
Options exercisable, weighted average exercise price (in usd per share) $ 1.74  
Options outstanding, weighted average remaining contractual term 1 year 9 months 18 days 2 years 8 months 12 days
Options exercisable, weighted average remaining contractual term 1 year 9 months 18 days  
Options outstanding, aggregate intrinsic value $ 2,019 $ 2,019
Options exercisable, aggregate intrinsic value $ 2,019