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STOCK-BASED COMPENSATION PLANS - Treatment of Equity Awards in Connection with the Merger (Details) - shares shares in Thousands | Oct. 27, 2017 | Oct. 24, 2017 | Oct. 20, 2017
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Accelerated vesting (in shares) |  |  | 300
Canceled vested unexervised stock options (in shares) |  | 4,500 |
RSAs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Accelerated vesting (in shares) | 1,100 |  |
RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Accelerated vesting (in shares) | 36 |  |
PSAs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Accelerated vesting (in shares) |  | 98 |

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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. + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + 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 (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of shares for which recognition of cost was accelerated for award under share-based payment arrangement. + References No definition available. + Details
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