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Share Based Award Stock Option Activity (Details) - Share-based Payment Arrangement, Option [Member]
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options, Outstanding, Number | shares 817,800
Granted | shares 7,910
Exercised | shares (162,612)
Forfeited or expired | shares 0
Options, Outstanding, Number | shares 663,098
Exercisable | shares 656,483
Vested and Expected to Vest | shares 663,098
Options, Outstanding, Weighted Average Exercise Price | $ / shares $ 70.13
Weighted Average Exercise Price | $ / shares 200.07
Options, Exercises in Period, Weighted Average Exercise Price | $ / shares 57.64
Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value | $ / shares 0
Options, Outstanding, Weighted Average Exercise Price | $ / shares 74.75
Exercise Price Range, Exercisable Options, Weighted Average Exercise Price | $ / shares 73.48
Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ / shares $ 74.75
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 2 years 7 months 6 days
Options, Exercisable, Weighted Average Remaining Contractual Term 2 years 6 months
Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 2 years 7 months 6 days
Options, Outstanding, Intrinsic Value | $ $ 108,003
Options, Exercisable, Intrinsic Value | $ 107,761
Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $ $ 108,003