v3.21.2

Stock-Based Compensation - Stock Option Activity (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2021 $ / shares shares
Number of Options
Balance as of beginning of period (in shares) | shares	670
Stock options, granted (in shares) | shares	0
Stock options, exercised (in shares) | shares	(297)
Stock options, forfeited (in shares) | shares	0
Balance as of end of period (in shares) | shares	373
Weighted Average Exercise Price
Balance at beginning of period (in dollars per share) | $ / shares	$ 27.43
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	19.58
Forfeited (in dollars per share) | $ / shares	0
Balance at end of period (in dollars per share) | $ / shares	$ 33.67

X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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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

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- Definition

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

+ References

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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 price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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

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

+ References

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