v3.8.0.1

INCOME TAXES - Expected And Reported Income Taxes (Benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] |  |  |
Federal statutory income tax rate | 35.00% | 35.00% | 35.00%
Federal statutory income tax rate - revised | 21.00% |  |
Computed tax expense (benefit) at federal statutory rates on income (loss) before income taxes (benefit) | $ (8,425) | $ 18,501 | $ 16,667
State income tax expense (benefit), net of federal benefit | 23,045 | (5,202) | 1,333
Federal tax expense associated with non-amortizable assets | 0 | 0 | 0
Non recognition of expense due to full valuation allowance | 0 | 0 | (244)
Valuation allowance current year activity | 2,395 | 0 | 0
Decrease in valuation allowance for change in federal net operating loss carryback rules | 0 | 0 | 0
Change in uncertain tax positions | 0 | 0 | 0
US federal income tax reform | (291,497) | 0 | 0
Tax impact of share-based awards | 1,383 | 0 | 0
Transaction costs | 8,477 | 0 | 0
Recognized gain on Exchange | 6,435 | 0 | 0
Tax benefit shortfall associated with share-based awards | 0 | 286 | 12
Nondeductible expenses and other | 1,102 | 1,209 | 669
Income taxes (benefit) | (257,085) | $ 14,794 | $ 18,437
Effective income tax rate |  | 28.00% | 38.70%
Impairment loss | $ 952 | $ 254 | $ 0

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e32123-109318 + Details
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