Fair Value Of Measurements (Schedule Of Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 9,824	$ 9,902
Forward exchange contract, asset, fair value	905	3,512
Forward exchange contract, liability, fair value	25	90
Assets fair value	10,729	13,414
Liabilities Fair Value	25	90
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 9,824	$ 9,902
Forward exchange contract, asset, fair value
Forward exchange contract, liability, fair value
Assets fair value	$ 9,824	$ 9,902
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	$ 905	$ 3,512
Forward exchange contract, liability, fair value	25	90
Assets fair value	905	3,512
Liabilities Fair Value	$ 25	$ 90
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