Commitments And Contingencies (Future Minimum Payments Under Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Schedule of Future Minimum Lease Payments [Line Items]
Total Minimum Payments, 2014	$ 43,940
Total Minimum Payments, 2015	41,282
Total Minimum Payments, 2016	36,888
Total Minimum Payments, 2017	34,933
Total Minimum Payments, 2018	33,743
Total Minimum Payments, Years subsequent to 2018	102,920
Non-cancellable Subleases, 2014	(17,345)
Non-cancellable Subleases, 2015	(17,345)
Non-cancellable Subleases, 2016	(17,392)
Non-cancellable Subleases, 2017	(17,345)
Non-cancellable Subleases, 2018	(17,345)
Non-cancellable Subleases, Years subsequent to 2018	(76,127)
Net Minimum Payments, 2014	26,595
Net Minimum Payments, 2015	23,937
Net Minimum Payments, 2016	19,496
Net Minimum Payments, 2017	17,588
Net Minimum Payments, 2018	16,398
Net Minimum Payments, Years subsequent to 2018	$ 26,793