Commitments And Contingencies (Schedule Of Estimated Unreported Loss Liability And Any Related Recoverable Insurance Amounts) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Commitments And Contingencies [Abstract]
Short-term liability	$ 850	$ 895
Long-term liability	680	755
Total liability	1,530	1,650
Short-term recoverable	310	320
Long-term recoverable	270	300
Total recoverable	580	620
Total net unreported loss liability	$ 950	$ 1,030