Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income) (Details)

v3.10.0.1
Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2017 $ 499    
Other comprehensive income (loss) before reclassifications 351    
Amounts reclassified from other comprehensive income (loss) 373    
Net current period other comprehensive income (loss) (22) $ 1,504 $ 205
Balance as of December 31, 2018 477 499  
Foreign Currency Translation Adjustments [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2017 905    
Other comprehensive income (loss) before reclassifications (1,031)    
Amounts reclassified from other comprehensive income (loss) (199)    
Net current period other comprehensive income (loss) (832)    
Balance as of December 31, 2018 73 905  
Unrealized Gains (Losses) on Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2017 (406)    
Other comprehensive income (loss) before reclassifications 1,382    
Amounts reclassified from other comprehensive income (loss) 572    
Net current period other comprehensive income (loss) 810    
Balance as of December 31, 2018 $ 404 $ (406)