Basis of Presentation - Schedule of Goodwill (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
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| Goodwill [Roll Forward] | ||
| Fiscal year opening balance | $ 1,174 | $ 2,174 |
| Sale of Amadeus Basin assets (see Note 3) | 0 | (1,000) |
| Impairment of Nautilus Poplar goodwill | (674) | 0 |
| Fiscal year closing balance | $ 500 | $ 1,174 |
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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 Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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