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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Restricted Stock Unit Activity
The following table summarizes the Company's RSU activity during the three months ended March 31, 2021:
Unvested Time-
Based RSUs
Unvested Performance-
Based RSUs
Weighted-Average Grant
Date Price Per Share
Outstanding as of January 1, 20211,103,816 3,320,954 $3.14 
Shares granted1,674,172 1,894,256 $2.89 
Shares forfeited— (431,246)$3.14 
Outstanding as of March 31, 20212,777,988 4,783,964 $3.01