Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities:
Net income (loss)	$ (218)us-gaap_ProfitLoss	$ 3,769us-gaap_ProfitLoss
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion, amortization and accretion on discounted liabilities	5,452	5,353
Gain on sale of properties	(489)	(3,173)
Unrealized loss on derivative instruments, net	2,466us-gaap_UnrealizedGainLossOnDerivatives	1,982us-gaap_UnrealizedGainLossOnDerivatives
Provision (benefit) for deferred income taxes	(63)us-gaap_DeferredIncomeTaxExpenseBenefit	1,251us-gaap_DeferredIncomeTaxExpenseBenefit
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	700	(171)
Decrease in due from related parties	255	134
Decrease in other assets	302	191
Increase (decrease) in accounts payable	(1,162)	1,141
Increase (decrease) in accrued liabilities	(5,914)	653
Net Cash Provided by Operating Activities	1,329	11,130
Cash Flows from Investing Activities:
Capital expenditures, including exploration expense	(4,533)	(7,864)
Proceeds from sale of properties and equipment	525	3,283
Net Cash Used in Investing Activities	(4,008)	(4,581)
Cash Flows from Financing Activities:
Purchase of stock for treasury	(1,280)	(1,046)
Purchase of non-controlling interests	(1)	(48)
Proceeds from long-term bank debt and other long-term obligations	11,200	14,750
Repayment of long-term bank debt and other long-term obligations	(10,755)	(19,211)
Distribution to non-controlling interests	(16)	(34)
Net Cash Used in Financing Activities	(852)	(5,589)
Net Increase (Decrease) in Cash and Cash Equivalents	(3,531)	960
Cash and Cash Equivalents at the Beginning of the Period	9,209	9,526
Cash and Cash Equivalents at the End of the Period	5,678	10,486
Supplemental Disclosures:
Income taxes paid	498us-gaap_IncomeTaxesPaidNet	293us-gaap_IncomeTaxesPaidNet
Interest paid	$ 1,237us-gaap_InterestPaid	$ 1,117us-gaap_InterestPaid

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.