Other Balance Sheet Items (Property And Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]
Land	$ 31,141	$ 31,141
Buildings and building improvements	236,171	239,280
Computer equipment and software	315,654	307,710
Capital work in progress	11,393	6,157
Office equipment and furniture	6,420	7,662
Leasehold improvements	2,223	2,282
Total cost	603,002	594,232
Less: accumulated depreciation and amortization	(269,141)	(267,096)
Total property and equipment, net	$ 333,861	$ 327,136