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Stockholders' Equity and Stock-Based Compensation - Summary of Restricted Stock Award and Restricted Stock Unit Activity (Details)
shares in Thousands
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Restricted Stock Awards  
Number of restricted shares  
Balance, beginning (in shares) | shares 653
Granted (in shares) | shares 0
Vested (in shares) | shares 0
Balance, ending (in shares) | shares 653
Weighted-Average Grant Date Fair Value  
Balance, beginning (in dollars per share) | $ / shares $ 21.30
Granted (in dollars per share) | $ / shares 0
Vested (in dollars per share) | $ / shares 0
Balance, ending (in dollars per share) | $ / shares $ 21.30
Restricted Stock Units  
Number of restricted shares  
Balance, beginning (in shares) | shares 2,800
Granted (in shares) | shares 76
Vested (in shares) | shares (3)
Forfeited (in shares) | shares (7)
Balance, ending (in shares) | shares 2,866
Weighted-Average Grant Date Fair Value  
Balance, beginning (in dollars per share) | $ / shares $ 20.54
Granted (in dollars per share) | $ / shares 38.76
Vested (in dollars per share) | $ / shares 18.63
Forfeited (in dollars per share) | $ / shares 24.88
Balance, ending (in dollars per share) | $ / shares $ 21.01