Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Unvested RSU (Details)

v3.10.0.1
Stock-Based Compensation - Schedule of Unvested RSU (Details)
9 Months Ended
Sep. 30, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
RSUs unvested ending (in shares) 1,643,949
Restricted Stock Units  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
RSUs unvested beginning (in shares) 1,071,538
Grants in period (in shares) 1,664,266
Vested in period (in shares) 641,843
Forfeited in period (in shares) 450,012
RSUs unvested ending (in shares) 1,643,949
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Unvested, weighted average grant date fair value (in usd per share) | $ / shares $ 1.84
Grants in period, weighted average grant date fair value (in usd per share) | $ / shares 0.76
Vested in period, weighted average grant date fair value (in usd per share) | $ / shares 2.26
Forfeited in period, weighted average grant date fair value (in usd per share) | $ / shares 1.05
Unvested, weighted average grant date fair value (in usd per share) | $ / shares $ 0.80