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INCOME TAXES Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Contingency [Line Items] |  |  |
Income tax expense (benefit) | $ (24,193) | $ 2,041 | $ (13,369)
Valuation allowance | 392 | $ 0 |
Operating loss carryforwards | 62,800 |  |
Accounting Standards Update 2016-09 |  |  |
Income Tax Contingency [Line Items] |  |  |
Income tax expense (benefit) | 253 |  |
Expire In 2035 |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carryforwards | $ 4,000 |  |

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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