Note 3 - Gerrity Oil Joint Venture (Detail) - Identifiable Assets Acquired and Liabilities Assumed (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012
Cash and cash equivalents	$ 2,000
Accounts receivable, net	118
Oil and gas property	1,543
Other assets	448
Trade payables	(102)
Asset retirement obligation	(7)
Total identifiable net assets	$ 4,000

The amount of asset retirement obligations acquired in a business combination.

No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to prepaid expenses and other noncurrent assets.

+ References

No definition available.

+ Details

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- Definition

The amount of oil and gas property acquired in a business combination.

+ References

No definition available.

+ Details

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- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 35

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

The amount of cash and cash equivalents acquired in a business combination.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

+ References

+ Details

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