Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 20,434	$ 44,608
Accounts receivable, net	93,615	116,043
Inventories	39,468	28,779
Prepaid expenses and other current assets	69,099	52,499
Total current assets	222,616	241,929
Property and equipment, net:
Property and equipment, at cost	2,255,974	2,204,678
Accumulated depreciation	(977,733)	(950,996)
Total property and equipment, net	1,278,241	1,253,682
Other assets:
Right-of-use operating leases, net	205,180	0
Debt issuance costs	1,493	1,793
Deposits and other assets	10,745	11,277
Goodwill	659,618	659,618
Intangible assets, net of accumulated amortization of $21,422 and $21,133 as of March 31, 2019 and December 31, 2018, respectively	347,014	349,029
Total other assets	1,224,050	1,021,717
Total assets	2,724,907	2,517,328
Current liabilities:
Accounts payable	51,457	32,905
Accrued compensation, payroll taxes and benefits	23,385	30,468
Accrued insurance reserves	36,198	39,183
Accrued interest payable	26,275	30,697
Other accrued liabilities	40,574	45,880
Deferred revenue	178,047	146,227
Short-term borrowings	165,000	43,000
Short-term operating lease liabilities	10,240	0
Total current liabilities	531,176	368,360
Noncurrent liabilities:
Long-term debt	2,064,557	2,063,512
Long-term operating lease liabilities	196,485	0
Other long-term liabilities	22,383	29,280
Deferred income taxes	150,217	173,998
Total noncurrent liabilities	2,433,642	2,266,790
Total liabilities	2,964,818	2,635,150
Redeemable noncontrolling interests	525,271	525,271
Stockholders' deficit:
Preferred stock, $1.00 par value	0	0
Common stock, $0.025 par value, 140,000,000 shares authorized; 84,245,940 and 83,962,182 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	2,106	2,099
Capital in excess of par value	1,052,378	1,037,640
Accumulated deficit	(1,749,400)	(1,611,334)
Accumulated other comprehensive loss, net of tax	(70,266)	(71,498)
Total stockholders' deficit	(765,182)	(643,093)
Total liabilities and stockholders' deficit	$ 2,724,907	$ 2,517,328