Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 37,875	$ 62,897
Accounts receivable, net of allowance of $2,127 and $2,578 respectively	233,470	252,764
Current deferred tax assets	5,416	8,022
Prepaid expenses and other current assets	28,969	27,059
Total current assets	305,730	350,742
Property and equipment, net	2,538,825	2,568,791
Restricted cash	5,673	5,022
Investment in direct financing lease	6,500	7,467
Goodwill	11,158	11,988
Non-current deferred tax assets	9,035
Other assets	40,239	30,732
Total assets	2,917,160	2,974,742
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	228,022	166,000
Income taxes payable	652	102
Current liabilities of discontinued operations	79	356
Total current liabilities	228,753	166,458
Long-term debt	1,150,000	1,111,545
Deferred tax liabilities		139,526
Other liabilities	37,218	35,593
Total liabilities	1,415,971	1,453,122
Commitments and contingencies
Preferred stock-$0.01 par value; 50,000 shares authorized; none issued and outstanding at June 30, 2013 and December 31, 2012, respectively
Common stock-$0.01 par value; 300,000 shares authorized; 115,418 and 100,105 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively	1,154	1,001
Additional paid-in capital	1,711,821	1,146,488
Retained (deficit) earnings	(211,786)	374,131
Total stockholders' equity	1,501,189	1,521,620
Total liabilities and stockholders' equity	$ 2,917,160	$ 2,974,742