Discontinued Operations - Summary of Asset Retirement Obligations Activity Included in Liabilities Held For Sale (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
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| Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | ||
| Fiscal year opening balance | $ 0 | $ 397 |
| Fiscal year closing balance | 0 | 0 |
| Less current asset retirement obligations | 0 | 0 |
| Long-term asset retirement obligations | 0 | 0 |
| Liabilities Held For Sale | ||
| Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | ||
| Fiscal year opening balance | 2,647 | 2,476 |
| Accretion expense | 171 | 171 |
| Fiscal year closing balance | 2,818 | 2,647 |
| Less current asset retirement obligations | 0 | 0 |
| Long-term asset retirement obligations | $ 2,818 | $ 2,647 |
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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- Definition Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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