Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 6,353	$ 5,723
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of assets	(29,646)	(4,895)
Deferred income taxes	2,621	(43)
Impairments	9,454	187
Depreciation, depletion and amortization	135,014	116,807
Debt issuance cost and discount amortization	2,403	1,226
Stock-based compensation	7,012	8,542
Excess income taxes from stock-based compensation	612	(1,531)
Increase in accounts receivable	(6,631)	(1,454)
(Increase) decrease in other current assets	(8,454)	49,436
Increase (decrease) in accounts payable and accrued expenses	(836)	25,226
Net cash provided by operating activities	117,902	199,224
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(332,537)	(258,493)
Proceeds from asset sales	45,648	11,624
Net cash used for investing activities	(286,889)	(246,869)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings	465,000
Principal payments on debt	(287,000)	(3,000)
Debt issuance costs	(6,577)
Proceeds from issuance of common stock		1,293
Excess income taxes from stock-based compensation	(612)	1,531
Net cash provided by (used for) financing activities	170,811	(176)
Net increase (decrease) in cash and cash equivalents	1,824	(47,821)
Cash and cash equivalents, beginning of period	1,732	90,472
Cash and cash equivalents, end of period	$ 3,556	$ 42,651

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The component of interest expense representing the noncash expenses charged against earnings in the period to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments.

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

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The net change between the beginning and ending balance of cash and cash equivalents.

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The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

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The gains and losses included in earnings resulting from the sale or disposal of tangible assets.

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The net change during the reporting period in the aggregate amount of obligations and expenses incurred but not paid.

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The net change during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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The net change during the reporting period in other operating assets not otherwise defined in the taxonomy.

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Cash generated by or used in financing activities of continuing operations; excludes cash flows from discontinued operations.

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The net cash inflow (outflow) from investing activity.

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Cash generated by or used in investing activities of continuing operations; excludes cash flows from discontinued operations.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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Cash generated by or used in operating activities of continuing operations; excludes cash flows from discontinued operations.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash inflow associated with the sale of other investments not otherwise defined in the taxonomy.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock options, amortization of restricted stock, and adjustment for officers compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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