Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 220,910	$ 47,918
Trade accounts receivable, net of allowance of $1,997 and $3,078, respectively	200,092	150,364
Accounts receivable - related parties	44	42
Income tax receivable	78,195	79,480
Inventories	25,662	21,556
Prepaid expenses	6,334	5,425
Other current assets	6,632	18,193
Deferred tax assets	8,430	8,290
Total current assets	546,299	331,268
Property and equipment, net	693,891	625,702
Deferred debt costs, net of amortization	16,348	6,835
Goodwill	16,287	16,150
Other intangible assets, net of amortization	43,727	45,833
Other assets	12,555	4,025
Total assets	1,329,107	1,029,813
Current liabilities:
Accounts payable	39,787	40,477
Accrued expenses	61,780	51,237
Current portion of long-term debt	27,816	24,231
Other current liabilities	166	3,309
Total current liabilities	129,549	119,254
Long-term debt, net of unamortized discount or premium on notes of $1,991 and $9,425, respectively	762,190	474,628
Deferred tax liabilities	117,636	123,393
Other long-term liabilities	11,369	10,615
Commitments and contingencies
Stockholders' equity:
Preferred stock; $.01 par value; 5,000,000 shares authorized; none designated or issued at June 30, 2011 and December 31, 2010, respectively	0	0
Common stock; $.01 par value; 80,000,000 shares authorized; 42,432,309 shares issued, and 42,394,955 shares outstanding at June 30, 2011; 42,394,809 shares issued, and 41,310,447 shares outstanding at December 31, 2010.	424	424
Additional paid-in capital	343,385	335,927
Retained earnings (deficit)	(35,446)	(27,544)
Treasury stock, at cost, 37,354 and 1,084,362 shares at June 30, 2011 and December 31, 2010, respectively	0	(6,884)
Total stockholders' equity	308,363	301,923
Total liabilities and stockholders' equity	$ 1,329,107	$ 1,029,813