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INCOME TAXES - Valuation Allowances (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Valuation allowance, additions | $ 11,166 | $ 49,582 | $ 48,501
Valuation allowance, deductions | (1,151) | (15,165) | (14,870)
Valuation Allowance of Deferred Tax Assets |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Valuation allowances, beginning balance | 153,651 | 119,234 | 85,603
Valuation Allowances, ending balance | $ 163,666 | $ 153,651 | $ 119,234

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- Definition Valuation Allowance, Deferred Tax Asset, Additions, Amount + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Deductions, Amount + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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