Other Balance Sheet Items (Components Of Accounts Payable And Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]
Accounts payable	$ 15,693	$ 19,283
Accrued employee compensation	27,468	40,251
Customer deposits, net	15,187	18,558
Taxes payable, deferred and other tax liabilities	13,437	28,441
Accrued restructuring costs	6,707	8,685
Other accrued liabilities	21,148	41,167
Total accounts payable and accrued liabilities	$ 99,640	$ 156,385