Income Taxes (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Feb. 29, 2016 |
Feb. 28, 2015 |
Feb. 29, 2016 |
Feb. 28, 2015 |
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| Income Tax Disclosure [Abstract] | ||||
| Valuation allowance for deferred tax assets | $ 19,227 | $ 19,227 | ||
| Operating loss carryforward term | 17 years | |||
| Income (loss) before income taxes | (177,335) | $ (14,535) | $ (186,694) | $ 2,979 |
| Income tax expense (benefit) | 10,722 | $ (2,071) | $ 10,217 | $ 3,665 |
| Valuation allowance expense | 19,227 | |||
| Tax benefit from impairment expense | 6,131 | |||
| Benefit for the amount of tax recoverable by carryback of the current year loss to prior years | $ 3,051 | |||
| Effective tax rate | 14.20% | 123.00% | ||
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- Definition Effective Income Tax Rate Reconciliation, Carryback, Amount No definition available.
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- Definition Operating Loss Carryforward, Term No definition available.
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 nondeductible impairment loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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