Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net loss	$ (1,943)	$ (32,263)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	67,764	67,348
Gain on bargain purchase		(1,772)
Accretion on asset retirement obligation	65	81
Change in allowance for doubtful accounts	(1,081)	(953)
Amortization of deferred financing costs	967	762
Amortization of discount on senior secured notes	6,484	937
Non-cash compensation	3,758	2,589
Loss on early extinguishment of debt (non-cash)	3,940
Premium on retirement of 11.625% senior secured notes	36,179
(Gain) loss on disposal of assets	(763)	1,174
Deferred income taxes	(6,088)	(3,311)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(48,744)	(30,886)
Inventories	(4,106)	(1,439)
Prepaid expenses and other current assets	(1,102)	3,747
Other assets	(8,531)	(2,981)
Accounts payable	(690)	3,379
Excess tax expense (benefit) from exercise of employee stock options / vesting of restricted stock	(3,508)	360
Income tax payable	4,793	(15,460)
Other liabilities	(2,328)	1,587
Accrued expenses	10,515	5,505
Net cash provided by (used in) operating activities	55,581	(1,596)
Cash flows from investing activities:
Purchase of property and equipment	(114,873)	(25,555)
Proceeds from sale of assets	17,996	1,787
Change in restricted cash		(1,124)
Payments for other long-term assets	(287)	(350)
Payments for businesses, net of cash acquired	(10)	(10,312)
Net cash used in investing activities	(97,174)	(35,554)
Cash flows from financing activities:
Proceeds from debt	498,850
Payments of debt	(238,291)	(13,805)
Premium on retirement of 11.625% senior secured notes	(36,179)
Purchase of treasury stock	(1,761)	(316)
Excess tax (expense) benefit from exercise of employee stock options / vesting of restricted stock	3,508	(360)
Tax withholding from exercise of stock options	(2,529)	(8)
Exercise of employee stock options	5,407	65
Deferred loan costs and other financing activities	(14,420)	(8)
Net cash provided by (used in) financing activities	214,585	(14,432)
Net increase (decrease) in cash and equivalents	172,992	(51,582)
Cash and cash equivalents - beginning of period	47,918	125,357
Cash and cash equivalents - end of period	$ 220,910	$ 73,775