Condensed Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 216,497	$ 401,194
Marketable securities	906,492	765,713
Other Assets, Current	66,078	51,033
Total current assets	1,189,067	1,217,940
Property and equipment, net	247,694	245,571
Goodwill	52,527	52,527
Deferred Income Tax Assets, Net	66,441	67,914
Deposits to acquire Intangible Assets	145,000	145,000
Other long-term assets	40,651	37,958
Total long-term assets	552,313	548,970
Total assets	1,741,380	1,766,910
Current liabilities:
Accounts payable and accrued liabilities	175,350	208,642
Deferred revenues	822,984	780,051
Total current liabilities	998,334	988,693
Long-term deferred revenues	289,881	282,838
Senior Notes	1,784,654	1,790,083
Other long-term liabilities	86,296	95,494
Total long-term liabilities	2,160,831	2,168,415
Total liabilities	3,159,165	3,157,108
Commitments and contingencies
Stockholders' deficit:
Preferred stock-par value $.001 per share	0	0
Common Stocks, Including Additional Paid in Capital	13,949,525	14,275,160
Accumulated deficit	(15,364,476)	(15,662,602)
Accumulated other comprehensive loss	(2,834)	(2,756)
Total stockholders' deficit	(1,417,785)	(1,390,198)
Total liabilities and stockholders' deficit	$ 1,741,380	$ 1,766,910
Common Stock, Shares, Issued	354,071	353,789
Common stock, outstanding shares	112,001	113,470
Preferred stock, authorized shares	5,000	5,000
Preferred stock, par value	$ 0.001	$ 0.001
Common stock, authorized shares	1,000,000	1,000,000
Common stock, par value	$ 0.001	$ 0.001