Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
OPERATING ACTIVITIES
Net Income	$ 5,093	$ 10,473
Adjustments to reconcile net income to net cash provided by operating activities:
Non-controlling interest in earnings of partnerships	1,412	1,037
Depreciation, depletion, amortization and accretion on discounted liabilities	40,930	24,238
Gain on sale of properties	(1,608)	(1,684)
Unrealized gain on derivative instruments, net	(9,015)	(7,062)
Provision for deferred income taxes	2,114	6,944
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	42	(775)
(Increase) decrease in other assets	(24)	454
Increase (decrease) in accounts payable	(8,078)	3,764
Increase in accrued liabilities	229	566
Increase (decrease) in due to related parties	41	(213)
Net cash provided by operating activities	31,136	37,742
INVESTING ACTIVITIES
Capital expenditures, including exploration expense	(26,913)	(9,621)
Proceeds from sale of properties and equipment	1,855	1,686
Net cash used in investing activities	(25,058)	(7,935)
FINANCING ACTIVITIES
Purchase of stock for treasury	(1,633)	(2,370)
Purchase of non-controlling interests	(192)	(6)
Proceeds from long-term bank debt and other long-term obligations	64,831	48,270
Repayment of long-term bank debt and other long-term obligations	(68,134)	(74,167)
Repayment of indebtedness to related parties	(20,000)
Distribution to non-controlling interest	(694)	(818)
Net cash used in financing activities	(25,822)	(29,091)
Net increase (decrease) in cash and cash equivalents	(19,744)	716
Cash and cash equivalents at the beginning of the period	32,792	11,779
Cash and cash equivalents at the end of the period	13,048	12,495
SUPPLEMENTAL DISCLOSURES
Income taxes paid	1,211	2,167
Income tax refunds received during the year	41
Interest paid	3,400	5,266
Change in accrued expenses relating to property	$ 579	$ 1,315

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