Commitments (Schedule Of Future Minimum Lease Payments Under Noncancelable Operating Leases And Future Minimum Capital Lease Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Commitments [Abstract]
Capital Leases, 2015	$ 1,613
Capital Leases, 2016	1,645
Capital Leases, 2017	1,678
Capital Leases, 2018	1,712
Capital Leases, 2019	1,746
Capital Leases, Thereafter	5,915
Capital Leases, Total minimum lease payments	14,309
Less: amount representing interest	4,788
Present value of minimum lease payments	9,521
Less: current installments	676	582
Capital lease obligations, less current installments	8,845	9,521
Operating Leases, 2015	14,577
Operating Leases, 2016	9,097
Operating Leases, 2017	4,275
Operating Leases, 2018	3,622
Operating Leases, 2019	3,021
Operating Leases, Thereafter	6,691
Operating Leases, Total minimum lease payments	$ 41,283