CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 77,909	$ 62,804
Accounts receivable, net of allowance of $1,265 and $2,410, respectively	244,957	247,084
Current deferred tax assets	9,241	8,022
Prepaid expenses and other current assets	20,612	26,383
Current assets of discontinued operations	15	6,449
Total current assets	352,734	350,742
Property and equipment, net	2,546,613	2,566,482
Restricted cash	5,589	5,022
Investment in direct financing lease	5,473	7,467
Goodwill	16,110	11,158
Non-current deferred tax assets	3,078
Other assets	77,828	30,701
Non-current assets of discontinued operations		3,170
Total assets	3,007,425	2,974,742
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	252,277	164,529
Income taxes payable	1,243	102
Current liabilities of discontinued operations	886	1,827
Total current liabilities	254,406	166,458
Long-term debt	1,205,000	1,111,545
Deferred tax liabilities		139,526
Other liabilities	45,512	35,593
Total liabilities	1,504,918	1,453,122
Commitments and contingencies
Preferred stock-$0.01 par value; 50,000 shares authorized; none issued and outstanding at December 31, 2013 and 2012, respectively
Common stock-$0.01 par value; 300,000 shares authorized; 115,923 and 100,105 shares issued and outstanding at December 31, 2013 and 2012, respectively	1,159	1,001
Additional paid-in capital	1,725,363	1,146,488
(Accumulated deficit) retained earnings	(224,015)	374,131
Total stockholders' equity	1,502,507	1,521,620
Total liabilities and stockholders' equity	$ 3,007,425	$ 2,974,742