Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 31,351	$ 55,802
Accounts receivable, net of allowance of $2,053 and $1,218, respectively	257,981	269,685
Deferred tax assets	11,068	11,768
Prepaid expenses and other current assets	13,610	18,676
Current assets of discontinued operations	16	3,498
Total current assets	314,026	359,429
Property and equipment, net	2,601,303	2,608,740
Restricted cash	5,015	5,013
Investment in direct financing lease	8,811	9,233
Goodwill	11,988	11,988
Other assets	29,983	25,047
Non-current assets of discontinued operations		181
Total assets	2,971,126	3,019,631
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	162,153	195,726
Income taxes payable	13,530	605
Current portion of long-term debt	40,000
Current liabilities of discontinued operations	1,196	2,031
Total current liabilities	216,879	198,362
Long-term debt, net of current portion	1,140,386	1,245,014
Deferred tax liabilities	135,750	136,503
Other liabilities	34,540	31,730
Total liabilities	1,527,555	1,611,609
Commitments and contingencies
Preferred stock - $0.01 par value; 50,000 shares authorized; none issued and outstanding at March 31, 2012 and December 31, 2011, respectively
Common stock - $0.01 par value; 300,000 shares authorized; 99,944 and 99,528 shares issued and outstanding at March 31, 2012 and December 31, 2011, respectively	999	995
Additional paid-in capital	1,133,300	1,129,435
Retained earnings	309,272	277,592
Total stockholders' equity	1,443,571	1,408,022
Total liabilities and stockholders' equity	$ 2,971,126	$ 3,019,631