Other Balance Sheet Items (Income Tax Receivables And Other Current Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Income tax and other receivables	$ 18,458	$ 24,821
Prepaid expenses	16,018	16,190
Deferred Tax Assets, Net of Valuation Allowance, Current	992	894
Other Assets, Current	$ 35,468	$ 41,905