Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 78,620	$ 130,736
Marketable securities	1,483,827	1,425,700
Accounts receivable, net	13,617	11,477
Deferred Tax Assets	286	44,756
Prepaid expenses and other current assets	38,849	30,795
Total current assets	1,615,199	1,643,464
Property and equipment, net	333,183	333,861
Goodwill and other intangible assets, net	52,527	52,527
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	52,793	7,299
Other long-term assets	17,411	25,325
Total long-term assets	455,914	419,012
Total assets	2,071,113	2,062,476
Current liabilities:
Accounts payable and accrued liabilities	119,986	130,391
Deferred revenues	591,356	564,627
Convertible Debentures, including contingent interest derivative	606,142	0
Deferred Tax Liabilities, Net, Current	388,923	0
Total current liabilities	1,706,407	695,018
Long-term deferred revenues	255,438	247,955
Convertible debentures, including contingent interest derivative	0	597,614
Long-term Debt	100,000	100,000
Long-term deferred tax liabilities	3,657	386,914
Other long-term liabilities	44,747	44,298
Total long-term liabilities	403,842	1,376,781
Total liabilities	2,110,249	2,071,799
Commitments and contingencies
Stockholders' deficit:
Preferred stock-par value $.001 per share; Authorized shares: 5,000; Issued and outstanding shares: none	0	0
Common stock-par value $.001 per share; Authorized shares: 1,000,000; Issued shares: 319,745 at March 31, 2013 and 318,722 at December 31, 2012; Outstanding shares: 151,185 at March 31, 2013 and 153,392 at December 31, 2012	320	319
Additional paid-in capital	19,777,251	19,891,291
Accumulated deficit	(19,816,032)	(19,900,545)
Accumulated other comprehensive loss	(675)	(388)
Total stockholders' deficit	(39,136)	(9,323)
Total liabilities and stockholders' deficit	$ 2,071,113	$ 2,062,476