Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,703,722	$ 465,851
Marketable securities	652,740	1,948,900
Other Assets, Current	52,066	31,402
Total current assets	2,408,528	2,446,153
Property and equipment, net	257,536	263,513
Goodwill	52,527	52,527
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	15,425	15,392
Deposits to acquire Intangible Assets	145,000	145,000
Other long-term assets	26,307	18,603
Total long-term assets	496,795	495,035
Total assets	2,905,323	2,941,188
Current liabilities:
Accounts payable and accrued liabilities	181,567	219,603
Deferred revenues	736,555	713,309
Convertible Debentures	630,824	627,616
Total current liabilities	1,548,946	1,560,528
Long-term deferred revenues	289,970	286,097
Senior Notes	1,783,159	1,782,529
Deferred Tax Liabilities, Net	214,400	444,108
Other long-term liabilities	303,582	128,197
Total long-term liabilities	2,591,111	2,640,931
Total liabilities	4,140,057	4,201,459
Commitments and contingencies
Stockholders' deficit:
Preferred stock-par value $.001 per share	0	0
Common stock-par value $.001 per share	326	325
Additional paid-in capital	16,305,653	16,437,135
Accumulated deficit	(17,538,015)	(17,694,790)
Accumulated other comprehensive loss	(2,698)	(2,941)
Total stockholders' deficit	(1,234,734)	(1,260,271)
Total liabilities and stockholders' deficit	$ 2,905,323	$ 2,941,188