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Stock-Based Compensation - Unvested RSU and PSU Award Activity (Details)
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Restricted Stock Units  
Shares  
Unvested at beginning period (in shares) | shares 771,817
Granted (in shares) | shares 393,515
Forfeited (in shares) | shares (3,033)
Vested (in shares) | shares (162,018)
Unvested at end period (in shares) | shares 1,000,281
Weighted-Average Grant Date Fair Value  
Unvested at beginning of period, weighted-average grant date fair value (in dollars per share) | $ / shares $ 5.91
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares 13.63
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares 6.43
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares 7.55
Unvested at end of period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares $ 8.68
Performance Stock Units  
Shares  
Unvested at beginning period (in shares) | shares 2,751,725
Granted (in shares) | shares 472,485
Vested (in shares) | shares (608,125)
Unvested at end period (in shares) | shares 2,616,085
Weighted-Average Grant Date Fair Value  
Unvested at beginning of period, weighted-average grant date fair value (in dollars per share) | $ / shares $ 8.42
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares 19.42
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares 9.30
Unvested at end of period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares $ 10.20