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SHARE-BASED COMPENSATION AND BENEFIT PLANS (Stock Option) (Narrative) (Details) - Stock option $ in Millions | 3 Months Ended
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Mar. 31, 2021 USD ($)
Share-Based Compensation and Benefit Plans |
Remaining unrecognized compensation expense | $ 41.3
Weighted-average period for cost recognition | 2 years 8 months 12 days
Employee stock option [Member] |
Share-Based Compensation and Benefit Plans |
Options expiration period | 10 years
Vesting period | 4 years
Option vesting rate per year | 25.00%

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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