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STOCK-BASED COMPENSATION - Additional Information (Details) shares in Millions, $ in Millions | 6 Months Ended
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Jun. 30, 2019 USD ($) shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Unrecognized stock-based compensation expense | $ | $ 99.5
Weighted-average period of recognition of unrecognized stock-based compensation expense (in years) | 2 years 2 months 12 days
Shares issued (in shares) | shares | 0.8

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- Definition Unrecognized cost of unvested share-based compensation awards. + 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=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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=109197908&loc=d3e5070-113901 + Details
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