Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 191,835	$ 183,059
Trust and restricted cash	17,414	20,141
Accounts receivable, net of allowance of $7,727 and $6,738	399,998	369,068
Income taxes receivable	0	4,366
Prepaid assets	53,395	40,886
Deferred expenses	41,022	44,886
Other current assets	29,267	31,889
Total current assets	732,931	694,295
PROPERTY AND EQUIPMENT:
Property and equipment	1,131,873	1,088,205
Accumulated depreciation and amortization	(805,200)	(755,754)
Total property and equipment, net	326,673	332,451
GOODWILL	1,947,832	1,916,192
INTANGIBLE ASSETS, net of accumulated amortization of $681,233 and $651,180	300,991	315,474
OTHER ASSETS	172,518	182,426
TOTAL ASSETS	3,480,945	3,440,838
CURRENT LIABILITIES:
Accounts payable	69,730	78,881
Deferred revenue	133,087	151,148
Accrued expenses	233,789	224,871
Current maturities of long-term debt	47,834	39,709
Total current liabilities	484,440	494,609
LONG-TERM OBLIGATIONS, less current maturities	3,064,850	3,129,963
DEFERRED INCOME TAXES	103,059	88,864
OTHER LONG-TERM LIABILITIES	153,099	169,251
Total liabilities	3,805,448	3,882,687
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS’ DEFICIT
Common Stock $0.001 par value, 475,000 shares authorized, 86,662 and 86,357 shares issued and 83,570 and 83,265 shares outstanding	87	86
Additional paid-in capital	2,240,801	2,223,379
Retained deficit	(2,410,711)	(2,490,455)
Accumulated other comprehensive loss	(67,454)	(87,633)
Treasury stock at cost (3,092 shares)	(87,226)	(87,226)
Total stockholders’ deficit	(324,503)	(441,849)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 3,480,945	$ 3,440,838

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.