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

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No definition available.

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- Definition

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

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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.

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- Definition

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

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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	144 Months Ended	192 Months Ended
	May 31, 2014	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Additional shares authorized (in shares)		150,000		150,000
Number of option awards exercised (in shares)		45,628
Employee Stock Award Plan-2008
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance (in shares)		834,910	1,900,000
Additional shares authorized (in shares)	1,500,000	0	1,500,000
Number of awards granted (in shares)		(172,478)	(3,288,899)
Number of awards forfeited or expired (in shares)		38,248	589,579
Ending balance (in shares)		700,680	700,680	700,680
Number of unrestricted stock awards granted (in shares)		172,478	3,288,899
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)		30,900	1,474,089
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)
Number of unrestricted stock 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)		63,600	164,378
Director Plan - 2005
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance (in shares)		34,863		300,000
Number of awards granted (in shares)		(24,728)		(313,868)
Number of awards forfeited or expired (in shares)		0		24,003
Ending balance (in shares)		160,135	160,135	160,135
Number of unrestricted stock awards granted (in shares)		24,728		313,868
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)		14,728		133,820
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)		14,300		98,491