XML 39 R29.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2021
Stock-Based Compensation  
Summary of the restricted stock awards activity

Number of

Unvested

Restricted Stock

Shares

Outstanding, beginning of period

4,990,971

Granted

1,083,963

Vested

(1,616,938)

Forfeited

(276,265)

Outstanding, end of period(1)

4,181,731

(1)The total outstanding unvested shares of restricted stock awards granted to employees and directors are included in total outstanding shares as of September 30, 2021.