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Basis of Presentation - Description of Operations (Details)
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12 Months Ended |
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Jun. 30, 2012
segment
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| Presentation and Significant Accounting Policies Information [Line Items] | |
| Number of Reportable Segments | 2 |
| Accounts Receivable Collectability Period | 2 months |
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Nautilus Poplar, LLC (NP)
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| Presentation and Significant Accounting Policies Information [Line Items] | |
| Subsidiary, Ownership Percentage | 100.00% |
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Magellan Petroleum Australia Limited (MPAL)
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| Presentation and Significant Accounting Policies Information [Line Items] | |
| Subsidiary, Ownership Percentage | 100.00% |
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Maximum
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| Presentation and Significant Accounting Policies Information [Line Items] | |
| Maturity period of cash equivalents | 3 months |
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Time Deposits | Maximum
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| Presentation and Significant Accounting Policies Information [Line Items] | |
| Maturity period of cash equivalents | 90 days |
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- Definition
Accounts Receivable, Collectability Period No definition available.
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- Definition
Cash Equivalent, Maturity Period No definition available.
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- Details
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| X | ||||||||||
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- Definition
Subsidiary, Ownership Percentage No definition available.
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- Definition
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
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