Supplemental Guarantor Financial Information (Condensed Consolidating Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Cash and cash equivalents	$ 5,576	$ 3,189	$ 10,449	$ 3,424
Accounts and notes receivable, net	40,867	20,270
Current portion of deferred tax asset, net	26,902	15,017
Other current assets	21,085	16,483
Total current assets	94,430	54,959
Property and equipment, net	191,331	156,465
Intangible assets, net	111,603	74,799
Goodwill	271,562	164,558	165,166
Deferred tax asset, net	23,101	715
Prepaid expenses, deferred costs, and other assets	20,774	3,819
Total assets	712,801	455,315
Current portion of long-term debt and notes payable	2,317	3,076
Current portion of other long-term liabilities	25,101	24,493
Accounts payable and accrued liabilities	111,285	70,710
Current portion of deferred tax liability, net	927	715
Total current liabilities	139,630	98,994
Long-term debt	368,632	251,757
Deferred tax liability, net		10,268
Asset retirement obligations	34,517	26,657	24,003
Other long-term liabilities	56,877	23,385
Total liabilities	599,656	411,061
Stockholders' equity (deficit)	113,145	44,254	(1,290)	(19,750)
Total liabilities and stockholders' equity	712,801	455,315
Senior subordinated notes	200,000	200,000
Parent [Member]
Cash and cash equivalents	1	81	40	20
Accounts and notes receivable, net	44,454	31,898
Current portion of deferred tax asset, net	24,526	13,794
Other current assets	885	483
Total current assets	69,866	46,256
Intangible assets, net	5,546	5,849
Investments in and advances to subsidiaries	150,525	(7,221)
Intercompany receivable (payable)	240,825	265,223
Deferred tax asset, net	20,278
Total assets	487,040	310,107
Accounts payable and accrued liabilities	7,895	10,266
Total current liabilities	7,895	10,266
Long-term debt	366,000	246,200
Deferred tax liability, net		9,387
Total liabilities	373,895	265,853
Stockholders' equity (deficit)	113,145	44,254
Total liabilities and stockholders' equity	487,040	310,107
Guarantors [Member]
Cash and cash equivalents	4,721	2,219	8,400	3,165
Accounts and notes receivable, net	37,141	16,465
Current portion of deferred tax asset, net	2,339	1,156
Other current assets	10,890	8,343
Total current assets	55,091	28,183
Property and equipment, net	124,892	94,972
Intangible assets, net	98,649	61,970
Goodwill	255,465	150,461
Investments in and advances to subsidiaries	100,048
Intercompany receivable (payable)	5,820	(2,180)
Deferred tax asset, net	1,933
Prepaid expenses, deferred costs, and other assets	18,184	3,020
Total assets	660,082	336,426
Current portion of other long-term liabilities	22,729	20,944
Accounts payable and accrued liabilities	126,865	70,273
Total current liabilities	149,594	91,217
Long-term debt	27
Intercompany payable	269,331	149,935
Deferred tax liability, net		814
Asset retirement obligations	18,095	15,485
Other long-term liabilities	55,969	21,630
Total liabilities	493,016	279,081
Stockholders' equity (deficit)	167,066	57,345
Total liabilities and stockholders' equity	660,082	336,426
Non-Guarantors [Member]
Cash and cash equivalents	854	889	2,009	239
Accounts and notes receivable, net	6,065	4,074
Current portion of deferred tax asset, net	37	67
Other current assets	9,316	7,663
Total current assets	16,272	12,693
Property and equipment, net	66,551	61,626
Intangible assets, net	7,408	6,980
Goodwill	16,097	14,097
Intercompany receivable (payable)	(9,796)	(8,486)
Deferred tax asset, net	890	715
Prepaid expenses, deferred costs, and other assets	2,590	799
Total assets	100,012	88,424
Current portion of long-term debt and notes payable	2,317	3,076
Current portion of other long-term liabilities	2,372	3,549
Accounts payable and accrued liabilities	23,319	22,338
Current portion of deferred tax liability, net	927	715
Total current liabilities	28,935	29,678
Long-term debt	2,605	5,557
Intercompany payable	20,389	104,271
Deferred tax liability, net		67
Asset retirement obligations	16,422	11,172
Other long-term liabilities	908	1,755
Total liabilities	69,259	152,500
Stockholders' equity (deficit)	30,753	(64,076)
Total liabilities and stockholders' equity	100,012	88,424
Elimination [Member]
Accounts and notes receivable, net	(46,793)	(32,167)
Other current assets	(6)	(6)
Total current assets	(46,799)	(32,173)
Property and equipment, net	(112)	(133)
Investments in and advances to subsidiaries	(250,573)	7,221
Intercompany receivable (payable)	(236,849)	(254,557)
Total assets	(534,333)	(279,642)
Accounts payable and accrued liabilities	(46,794)	(32,167)
Total current liabilities	(46,794)	(32,167)
Intercompany payable	(289,720)	(254,206)
Deferred tax liability, net
Total liabilities	(336,514)	(286,373)
Stockholders' equity (deficit)	(197,819)	6,731
Total liabilities and stockholders' equity	$ (534,333)	$ (279,642)