Employee Purchase Plan Purchase Price Percentage of Fair Market Value

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- Definition

Number Of Share Based Compensation Plans

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- Definition

Share Based Compensation Arrangement By Employee Stock Purchase Program Number Of Shares Available For Purchase

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No definition available.

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- Definition

Represents the maximum number of shares that can be awarded under a share-based compensation plan as a percentage of the target award.

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Maximum Number of Shares that can be Granted to someone other than a non-employee board member in Any Fiscal Year.

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Maximum Value of Awards that Can be Granted to a non-employee board member in Any Fiscal Year.

+ References

No definition available.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

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

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Per share weighted-average price paid for shares purchased on open market for issuance under share-based payment arrangement.

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- Definition

Number of shares issued under share-based payment arrangement.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-Based Employee Compensation (Narrative) (Details)	12 Months Ended
Stock-Based Employee Compensation (Narrative) (Details)	Dec. 31, 2021 USD ($) plan $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans \| plan	1
Maximum number of award to be granted per individual (in shares)	500,000
Maximum aggregate number of shares available under the employee stock purchase plan (in shares)	2,800,000
Purchase price for each share of common stock as percentage of the average of the market price	85.00%
Shares of common stock issued under the ESPP plan (in shares)	136,480	184,936	91,586
Weighted-average price of shares of common stock issued under the ESPP plan (in dollars per share) \| $ / shares	$ 70.95	$ 48.08	$ 98.20
Total intrinsic value of stock options exercised \| $	$ 1,300,000	$ 1,500,000	$ 8,100,000
Stock options outstanding (in shares)	0	49,647
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum value of awards that can be granted to participant in any fiscal year \| $	$ 500,000
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Total unrecognized compensation cost \| $	$ 0
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Maximum actual number of shares underlying each performance share award as a percentage of target performance shares	200.00%
Shares issued (in shares)	296,798
Total unrecognized compensation cost \| $	$ 14,800,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Maximum actual number of shares underlying each performance share award as a percentage of target performance shares	200.00%
Shares issued (in shares)	350,996
Total unrecognized compensation cost \| $	$ 3,300,000
2008 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance under stock-based compensation plans (in shares)	14,000,000