(4) Investment in Savoy (Details) - Condensed Balance Sheet (Equity Investment in Savoy, USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Equity Investment in Savoy
(4) Investment in Savoy (Details) - Condensed Balance Sheet [Line Items]
Current assets	$ 25,651
Oil and gas properties, net	24,156
	49,807
Total liabilities	14,354
Partners' capital	35,453
	$ 49,807

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Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Net amount of capitalized costs relating to oil and gas producing activities.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Amount of liabilities and members' capital, including the portion of equity attributable to noncontrolling interests, if any.

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