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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Weighted average price of options that were either forfeited or expired.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

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

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- References

No definition available.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Stock-Based Compensation, Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Number of Shares [Roll Forward]
Exercised (in shares)	(1,200,000)	(700,000)	(400,000)
Stock Options [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	2,758,300
Granted (in shares)	0
Exercised (in shares)	(680,500)
Forfeited/cancelled/expired (in shares)	(452,300)
Outstanding at end of year (in shares)	1,625,500	2,758,300
Exercisable at end of year (in shares)	1,122,500
Weighted-Average Exercise Price [Roll Forward]
Outstanding at beginning of year (in dollars per share)	$ 39.9
Granted (in dollars per share)	0
Exercised (in dollars per share)	31.65
Forfeited/cancelled/expired (in dollars per share)	50.95
Outstanding at end of year (in dollars per share)	40.04	$ 39.9
Exercisable at end of year (in dollars per share)	$ 39.2
Remaining Contractual Term and Aggregate Intrinsic Value [Abstract]
Outstanding options, weighted-average remaining contractual term	3 years 6 months 10 days
Outstanding options, aggregate intrinsic value	$ 10,349
Exercisable options, weighted-average remaining contractual term	2 years 11 months 15 days
Exercisable options, aggregate intrinsic value	$ 8,027
Service-Based Options [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	538,200
Granted (in shares)	0
Exercised (in shares)	(340,000)
Forfeited/cancelled/expired (in shares)	(34,300)
Outstanding at end of year (in shares)	163,900	538,200
Exercisable at end of year (in shares)	163,900
Weighted-Average Exercise Price [Roll Forward]
Outstanding at beginning of year (in dollars per share)	$ 35.89
Granted (in dollars per share)	0
Exercised (in dollars per share)	33.15
Forfeited/cancelled/expired (in dollars per share)	54.45
Outstanding at end of year (in dollars per share)	37.69	$ 35.89
Exercisable at end of year (in dollars per share)	$ 37.69
Remaining Contractual Term and Aggregate Intrinsic Value [Abstract]
Outstanding options, weighted-average remaining contractual term	4 months 6 days
Outstanding options, aggregate intrinsic value	$ 834
Exercisable options, weighted-average remaining contractual term	4 months 6 days
Exercisable options, aggregate intrinsic value	$ 834
Performance-Based Options [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	2,220,100
Granted (in shares)	0
Exercised (in shares)	(340,500)
Forfeited/cancelled/expired (in shares)	(418,000)
Outstanding at end of year (in shares)	1,461,600	2,220,100
Exercisable at end of year (in shares)	958,600
Weighted-Average Exercise Price [Roll Forward]
Outstanding at beginning of year (in dollars per share)	$ 40.87
Granted (in dollars per share)	0
Exercised (in dollars per share)	31.14
Forfeited/cancelled/expired (in dollars per share)	50.66
Outstanding at end of year (in dollars per share)	40.3	$ 40.87
Exercisable at end of year (in dollars per share)	$ 39.46
Remaining Contractual Term and Aggregate Intrinsic Value [Abstract]
Outstanding options, weighted-average remaining contractual term	3 years 10 months 20 days
Outstanding options, aggregate intrinsic value	$ 9,515
Exercisable options, weighted-average remaining contractual term	3 years 4 months 28 days
Exercisable options, aggregate intrinsic value	$ 7,193