Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]

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- Definition

Number of share-based compensation awards forfeited or expired in Period

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Gross

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

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

+ References

No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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

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Stock-Based Compensation - Stock Award Plans (Details) - shares	1 Months Ended		12 Months Ended	156 Months Ended	204 Months Ended
	May 31, 2021	May 31, 2014	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Additional shares authorized (in shares)			0		150,000
Number of option awards exercised (in shares)			16,065
Employee Stock Award Plan-2008
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance (in shares)			700,680	1,900,000
Additional shares authorized (in shares)	650,000	1,500,000	650,000	2,150,000
Number of awards granted (in shares)			(161,857)	(3,450,756)
Number of awards forfeited or expired (in shares)			128,996	718,575
Ending balance (in shares)			1,317,819	1,317,819	1,317,819
Employee Stock Award Plan-2008 \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of option awards exercised (in shares)			7,884	1,481,973
Employee Stock Award Plan-2008 \| Unrestricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of awards granted (in shares)			0	(10,090)
Employee Stock Award Plan-2008 \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of restricted stock awards vested (in shares)			53,483	217,861
Director Plan - 2005
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance (in shares)			160,135		300,000
Number of awards granted (in shares)			(18,510)		(332,378)
Number of awards forfeited or expired (in shares)			2,727		26,730
Ending balance (in shares)			144,352	144,352	144,352
Director Plan - 2005 \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of option awards exercised (in shares)			8,181		142,001
Director Plan - 2005 \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of restricted stock awards vested (in shares)			0		98,491