Share-Based Compensation Share-Based Compensation, Textuals (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Stock, Capital Shares Reserved for Future Issuance	4,912,904	5,873,329
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 204,300
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		$ 170,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 7.50	$ 6.44	$ 6.86
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 5,708	$ 5,535	$ 7,250
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	59,180	41,995	65,023
Proceeds from exercise of stock options	39,354	26,671	40,922
Share-based Payment Arrangement, Expense	14,168	$ 14,103	15,029
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	12,500
PerformanceUnitsCashPaid	$ 12,400
2016 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		13,404,404
Long Term Incentive 1996 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	44,000,000
Stock Options [Member]
Share-based Payment Arrangement, Expense	$ 5,514	$ 5,668	6,314
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 6,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 8 months 12 days
Restricted Stock [Member]
Share-based Payment Arrangement, Expense	$ 5,647	5,568	6,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 6,500
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 8 months 12 days
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Expense	$ 3,007	2,867	2,715
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	3,500
Performance Options [Member]
Share-based Payment Arrangement, Expense	$ 19,500	$ 8,600	$ 6,100
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	530,596

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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