Fair Value Of Measurements (Schedule Of Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 10,101	$ 9,824
Forward exchange contract, asset, fair value	238	905
Forward exchange contract, liability, fair value	583	25
Assets fair value	10,339	10,729
Liabilities fair value	583	25
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	10,101	9,824
Forward exchange contract, asset, fair value
Forward exchange contract, liability, fair value
Assets fair value	10,101	9,824
Liabilities fair value
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Forward exchange contract, asset, fair value	238	905
Forward exchange contract, liability, fair value	583	25
Assets fair value	238	905
Liabilities fair value	583	25
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities
Forward exchange contract, asset, fair value
Forward exchange contract, liability, fair value
Assets fair value
Liabilities fair value