Fair Value Measurements (Schedule Of Assets and Liabilities Carried and Measured At Fair Value) (Details) - Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Investments	$ 52	$ 51
Assets, Derivatives	1	1
Liabilities, Derivatives	(394)	(156)
Total recorded at fair value	(341)	(104)
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Investments	52	51
Total recorded at fair value	52	51
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Derivatives	1	1
Liabilities, Derivatives	(394)	(156)
Total recorded at fair value	$ (393)	$ (155)