Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 70,843	$ 65,291
Restricted cash		877
Accounts receivable, net of allowance of $1,645 and $459, respectively	221,427	234,456
Prepaid expenses and other current assets	32,995	41,434
Total current assets	325,265	342,058
Property and equipment, net	2,870,150	2,883,060
Restricted cash	218	131
Investment in direct financing lease		684
Goodwill	38,415	35,557
Non-current deferred tax assets	7,774	9,824
Other assets	85,928	84,704
Total assets	3,327,750	3,356,018
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	332,859	317,675
Income taxes payable	1,139	1,920
Current portion of long-term debt	7,500	5,000
Total current liabilities	341,498	324,595
Long-term debt, net	1,448,142	1,447,077
Deferred revenue	45,608	63,289
Other liabilities	47,875	58,309
Total liabilities	1,883,123	1,893,270
Commitments and contingencies
Preferred stock - $0.01 par value; 50,000 shares authorized; none issued and outstanding at June 30, 2016 and December 31, 2015, respectively	0	0
Common stock - $0.01 par value; 300,000 shares authorized; 117,520 and 117,232 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively	1,175	1,172
Additional paid-in capital	1,768,321	1,762,394
Accumulated deficit	(324,869)	(300,818)
Total stockholders' equity	1,444,627	1,462,748
Total liabilities and stockholders' equity	$ 3,327,750	$ 3,356,018