Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 231,571	$ 465,851
Marketable securities	947,395	1,948,900
Other Assets, Current	57,016	31,402
Total current assets	1,235,982	2,446,153
Property and equipment, net	256,269	263,513
Goodwill	52,527	52,527
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	167,772	15,392
Deposits to acquire Intangible Assets	145,000	145,000
Other long-term assets	27,078	18,603
Total long-term assets	648,646	495,035
Total assets	1,884,628	2,941,188
Current liabilities:
Accounts payable and accrued liabilities	176,121	219,603
Deferred revenues	737,515	713,309
Convertible Debentures	0	627,616
Total current liabilities	913,636	1,560,528
Long-term deferred revenues	286,735	286,097
Senior Notes	1,784,417	1,782,529
Deferred Tax Liabilities, Net	0	444,108
Other long-term liabilities	300,941	128,197
Total long-term liabilities	2,372,093	2,640,931
Total liabilities	3,285,729	4,201,459
Commitments and contingencies
Stockholders' deficit:
Preferred stock-par value $.001 per share	0	0
Common stock-par value $.001 per share	352	325
Additional paid-in capital	15,873,534	16,437,135
Accumulated deficit	(17,271,984)	(17,694,790)
Accumulated other comprehensive loss	(3,003)	(2,941)
Total stockholders' deficit	(1,401,101)	(1,260,271)
Total liabilities and stockholders' deficit	$ 1,884,628	$ 2,941,188