Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Stock-based Compensation - Schedule of Unvested Restricted Stock Units Activity (Details) - RSUs
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
$ / shares
shares
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Right to receive per award 1
Number of Shares  
Unvested, beginning balance (in shares) 89,000
Granted (in shares) 135,000
Vested (in shares) (50,000)
Forfeited (in shares) (31,000)
Unvested, ending balance (in shares) 143,000
 Weighted Average Grant- Date Fair Value  
Unvested, beginning balance (in dollars per share) | $ / shares $ 10.77
Granted (in dollars per share) | $ / shares 4.45
Vested (in dollars per share) | $ / shares 6.24
Forfeited (in dollars per share) | $ / shares 10.96
Unvested, ending balance (in dollars per share) | $ / shares $ 6.31
Fair value of vested shares | $ $ 251
Unrecognized compensation expense | $ $ 741
Period of unrecognized compensation expense 2 years 2 months 12 days