Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 134,651	$ 68,783
Restricted cash	24,842	32,924
Accounts receivable, net	87,393	90,673
Costs and estimated earnings in excess of billings on uncompleted contracts	13,763	17,437
Prepaid expenses and other current assets	66,227	49,716
Total current assets	326,876	259,533
Property and equipment, net	2,778,372	2,812,346
Intangible assets, net	3,459,866	3,598,131
Other assets	724,264	650,195
Total assets	7,289,378	7,320,205
Current liabilities:
Accounts payable	32,382	33,334
Accrued expenses	60,637	69,862
Current maturities of long-term debt	24,000	20,000
Deferred revenue	94,552	97,969
Accrued interest	49,764	48,899
Other current liabilities	16,475	8,841
Total current liabilities	277,810	278,905
Long-term liabilities:
Long-term debt, net	9,675,738	9,290,686
Other long-term liabilities	377,965	349,728
Total long-term liabilities	10,053,703	9,640,414
Shareholders' deficit:
Preferred stock - par value $.01, 30,000 shares authorized, no shares issued or outstanding
Common stock - Class A, par value $.01, 400,000 shares authorized, 114,832 and 116,446 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	1,148	1,164
Additional paid-in capital	2,217,273	2,167,470
Accumulated deficit	(4,759,637)	(4,388,288)
Accumulated other comprehensive loss, net	(500,919)	(379,460)
Total shareholders' deficit	(3,042,135)	(2,599,114)
Total liabilities and shareholders' deficit	$ 7,289,378	$ 7,320,205