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Subsequent Event (Notes)	3 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 24, 2014, the Company sold all of its joint venture interests in its Mississippian Lime properties in Kay County, Oklahoma for approximately $400,000, net of customary closing adjustments, and the buyer's assumption of all abandonment liabilities. Denbury Resources, Inc., operator of the Delhi Field in northeast Louisiana, has informed the Company of its preliminary determination that payout occurred during the month of October 2014 and that the Company will earn its reversionary working interest of 23.9% and associated revenue interest of 19.1% in the Delhi Field effective November 1, 2014. When combined with our existing 7.4% royalty and overriding royalty interests, our total net revenue interest will increase to 26.5%, while we will now be responsible for paying 23.9% of the operating costs and capital expenditures going forward.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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