Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 46,615	$ 77,909
Accounts receivable, net of allowance of $968 and $1,265, respectively	246,894	244,957
Current deferred tax assets	6,351	9,241
Prepaid expenses and other current assets	29,007	20,612
Current assets of discontinued operations		15
Total current assets	328,867	352,734
Property and equipment, net	2,538,996	2,546,613
Restricted cash	2,607	5,589
Investment in direct financing lease	4,382	5,473
Goodwill	16,110	16,110
Non-current deferred tax assets	5,875	3,078
Other assets	76,657	77,828
Total assets	2,973,494	3,007,425
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	237,438	252,277
Income taxes payable	676	1,243
Current liabilities of discontinued operations	370	886
Total current liabilities	238,484	254,406
Long-term debt	1,195,000	1,205,000
Other liabilities	40,380	45,512
Total liabilities	1,473,864	1,504,918
Commitments and contingencies
Preferred stock - $0.01 par value; 50,000 shares authorized; none issued and outstanding at June 30, 2014 and December 31, 2013, respectively	0	0
Common stock - $0.01 par value; 300,000 shares authorized; 116,413 and 115,923 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	1,164	1,159
Additional paid-in capital	1,734,404	1,725,363
Accumulated deficit	(235,938)	(224,015)
Total stockholders' equity	1,499,630	1,502,507
Total liabilities and stockholders' equity	$ 2,973,494	$ 3,007,425