XML 50 R39.htm IDEA: XBRL DOCUMENT v3.21.1
Stock-Based Compensation - Schedule of Restricted Share Activity (Details) - Restricted Stock
shares in Thousands
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Shares  
Unvested at the beginning | shares 896
Unvested, Vested | shares (93)
Unvested, Forfeited or canceled | shares (36)
Unvested at the ending | shares 767
Estimated Fair Value Per Share  
Unvested at the beginning | $ / shares $ 2.46
Unvested, Vested | $ / shares 1.88
Unvested, Forfeited or canceled | $ / shares 1.39
Unvested at the ending | $ / shares $ 1.79