Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 163,548	$ 99,760
Accounts receivable, net	102,963	63,803
Inventories	40,494	21,535
Prepaid expenses and other current assets	53,589	42,879
Total current assets	360,594	227,977
Property and equipment, net:
Property and equipment, at cost	1,939,708	1,862,764
Accumulated depreciation	(711,467)	(664,610)
Total property and equipment, net	1,228,241	1,198,154
Other assets:
Debt issuance costs	4,787	5,386
Restricted-use investment securities	3,518	3,036
Deposits and other assets	7,691	7,211
Goodwill	630,248	630,248
Intangible assets, net of accumulated amortization	355,214	356,428
Total other assets	1,001,458	1,002,309
Total assets	2,590,293	2,428,440
Current liabilities:
Accounts payable	66,972	25,570
Accrued compensation, payroll taxes and benefits	24,744	46,583
Accrued insurance reserves	42,287	40,796
Accrued interest payable	20,146	19,555
Other accrued liabilities	42,374	34,714
Deferred income	174,625	97,334
Current portion of long-term debt	524	7,506
Total current liabilities	371,672	272,058
Noncurrent liabilities:
Long-term debt	1,651,433	1,498,022
Other long-term liabilities	56,996	58,150
Deferred income taxes	147,662	140,273
Total noncurrent liabilities	1,856,091	1,696,445
Total liabilities	2,227,763	1,968,503
Redeemable noncontrolling interests	454,675	435,721
Stockholders' equity (deficit):
Common stock, $0.025 par value	2,322	2,289
Capital in excess of par value	1,057,027	1,041,710
Accumulated deficit	(1,084,244)	(953,225)
Accumulated other comprehensive loss, net of tax	(67,250)	(66,558)
Total stockholders' (deficit) equity	(92,145)	24,216
Total liabilities and equity (deficit)	$ 2,590,293	$ 2,428,440