Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 5,576	$ 3,189
Accounts and notes receivable, net of allowance of $251 and $507 as of December 31, 2011 and 2010, respectively	40,867	20,270
Inventory	3,517	1,795
Restricted cash	4,512	4,466
Current portion of deferred tax asset, net	26,902	15,017
Prepaid expenses, deferred costs, and other current assets	13,056	10,222
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
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 liabilities:
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	33,337	20,167
Accrued liabilities	77,948	50,543
Current portion of deferred tax liability, net	927	715
Total current liabilities	139,630	98,994
Long-term liabilities:
Long-term debt	368,632	251,757
Deferred tax liability, net		10,268
Asset retirement obligations	34,517	26,657
Other long-term liabilities	56,877	23,385
Total liabilities	599,656	411,061
Commitments and contingencies
Stockholders' equity:
Common stock, $0.0001 par value; 125,000,000 shares authorized; 49,745,989 and 48,396,134 shares issued as of December 31, 2011 and 2010, respectively; 43,999,443 and 42,833,342 shares outstanding as of December 31, 2011 and 2010, respectively	4	4
Additional paid-in capital	234,716	213,754
Accumulated other comprehensive loss, net	(83,902)	(65,053)
Retained earnings (accumulated deficit)	14,270	(55,963)
Treasury stock; 5,746,546 and 5,562,792 shares at cost as of December 31, 2011 and 2010, respectively	(53,500)	(50,351)
Total parent stockholders' equity	111,588	42,391
Noncontrolling interests	1,557	1,863
Total stockholders' equity	113,145	44,254
Total liabilities and stockholders' equity	$ 712,801	$ 455,315

For entities that net deferred tax assets and tax liabilities, represents the amount of deferred tax liabilities net of deferred tax assets (after reduction for valuation allowance) as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets or liabilities that are classified as current in the financial statements, or that are expected to reverse in the next twelve months (or normal operating cycle, if longer). A temporary difference is a difference between the tax basis of an asset or liability and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference.

No definition available.