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Stock-Based Compensation - Non-Vested Restricted Stock Award Activity (Details)
shares in Thousands
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Shares  
Non-vested at beginning of period (in shares) | shares 310
Granted (in shares) | shares 228
Vested (in shares) | shares (142)
Forfeited (in shares) | shares (3)
Non-vested at end of period (in shares) | shares 393
Weighted-Average Grant Date Fair Value  
Non-vested at beginning of period (in dollars per share) | $ / shares $ 44.41
Granted (in dollars per share) | $ / shares 31.85
Vested (in dollars per share) | $ / shares 39.30
Forfeited (in dollars per share) | $ / shares 47.96
Non-vested at end of period (in dollars per share) | $ / shares $ 38.96