Other Balance Sheet Items (Components Of Accounts Payable And Accrued Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Accounts payable	$ 17,661	$ 23,298
Accrued employee compensation	40,118	51,851
Customer deposits, net	39,558	48,307
Interest Payable, Current	27,701	27,701
Taxes Payable, Current	4,485	16,943
Other accrued liabilities	14,838	20,071
Total accounts payable and accrued liabilities	$ 144,361	$ 188,171