Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Historical Volatility

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Lookback Term

+ References

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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 (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ 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 (f)(2)(iv)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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.

+ References

No definition available.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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EQUITY COMPENSATION PLANS - Valuation Assumptions of Restricted Shares (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Time-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compounded Risk-Free Interest Rate (as a percent)	0.90%	1.50%	2.70%
Lookback term	2 years 8 months 12 days	3 years 2 months 12 days	3 years 1 month 6 days
Historical volatility (as a percent)	51.00%	42.00%	35.00%
Expected dividend yield (as a percent)	0.00%	0.00%	0.00%
Performance-Based Restricted Stock Units \| 75th Percentile or Higher
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate of award (as a percent)	150.00%
Performance-Based Restricted Stock Units \| 50th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate of award (as a percent)	100.00%
Performance-Based Restricted Stock Units \| 25th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate of award (as a percent)	50.00%
Performance-Based Restricted Stock Units \| Below the 25th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate of award (as a percent)	0.00%