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Stock-Based Compensation - Schedule of Restricted Stock Units (Details) - Restricted Stock Units (RSUs)
shares in Thousands
12 Months Ended
Dec. 31, 2021
$ / shares
shares
Units  
Unvested at beginning of period (in shares) 472
Granted (in shares) 229
Vested, including shares withheld for tax (in shares) (175)
Forfeited (in shares) (41)
Unvested at end of period (in shares) 485
Restricted shares withheld for tax (in shares) 55
Weighted-Average Grant-Date Fair Value  
Unvested at beginning of period (in dollars per share) | $ / shares $ 145.77
Granted (in dollars per share) | $ / shares 194.41
Vested (in dollars per share) | $ / shares 139.08
Forfeited (in dollars per share) | $ / shares 169.13
Unvested at end of period (in dollars per share) | $ / shares $ 169.19