Other Balance Sheet Items (Components Of Accounts Payable And Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]
Accounts payable	$ 16,019	$ 19,283
Accrued employee compensation	32,011	40,251
Customer deposits, net	17,287	18,558
Taxes payable, deferred and other tax liabilities	12,547	28,441
Accrued restructuring costs	5,068	8,685
Other accrued liabilities	29,576	41,167
Total accounts payable and accrued liabilities	$ 112,508	$ 156,385