Quarterly report pursuant to Section 13 or 15(d)

Fair Value Of Measurements (Schedule Of Assets And Liabilities Measured On A Recurring Basis) (Details)

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Fair Value Of Measurements (Schedule Of Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Forward exchange contract, asset, fair value $ 614 $ 46
Forward exchange contract, liability, fair value   993
Assets fair value 614 46
Liabilities fair value   993
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Forward exchange contract, asset, fair value
Forward exchange contract, liability, fair value  
Assets fair value
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 614 46
Forward exchange contract, liability, fair value   993
Assets fair value 614 46
Liabilities fair value   993
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Forward exchange contract, asset, fair value
Forward exchange contract, liability, fair value  
Assets fair value
Liabilities fair value