Other Balance Sheet Items (Components Of Accounts Payable And Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Balance Sheet Related Disclosures [Abstract]
Accounts payable	$ 26,296	$ 23,519
Accrued employee compensation	35,548	38,778
Customer deposits, net	19,352	19,321
Taxes payable and other tax liabilities	25,699	21,918
Other accrued liabilities	31,951	26,855
Total accounts payable and accrued liabilities	$ 138,846	$ 130,391