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STOCKHOLDERS' EQUITY - Summary of Restricted Stock, Restricted Stock Unit and Performance-based Stock Unit Activity Footnote (Detail) - Performance-Based Stock Units | 9 Months Ended
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Sep. 30, 2016 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Performance-based stock units, percentage of attainment level | 100.00%
Class A Common Stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Performance-based stock units | 43,000

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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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