Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation - Schedule of Restricted Stock Units ("RSU") Activity (Details)

v3.19.1
Stock-based Compensation - Schedule of Restricted Stock Units ("RSU") Activity (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
$ / shares
shares
Weighted Average Grant Date Fair Value Per Share  
Total unrecognized compensation cost related to unvested share-based compensation arrangements, recognition period 2 years 1 month 24 days
Restricted Stock Units  
Number of Shares  
Beginning balance - Outstanding (shares) | shares 64,365
Options granted in period (shares) | shares 68,000
Vested (shares) | shares (14,785)
Forfeited (shares) | shares (5,689)
Ending balance - Outstanding (shares) | shares 111,891
Weighted Average Grant Date Fair Value Per Share  
Beginning balance - Outstanding (in dollars per share) | $ / shares $ 2.70
Granted (in dollars per share) | $ / shares 1.65
Vested (in dollars per share) | $ / shares 2.68
Forfeited (in dollars per share) | $ / shares 2.89
Ending balance - Outstanding (in dollars per share) | $ / shares $ 2.06
Vesting percentage 25.00%
Vesting period of options 4 years
Total unrecognized compensation cost related to unvested RSU share-based compensation | $ $ 0.2
Total unrecognized compensation cost related to unvested share-based compensation arrangements, recognition period 2 years 8 months 23 days