Annual report pursuant to Section 13 and 15(d)

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

v3.7.0.1
Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2015 $ (1,210)    
Other comprehensive income (loss) before reclassifications (250)    
Amounts reclassified from other comprehensive income (loss) (455)    
Net current period other comprehensive income (loss) 205 $ 1,202 $ (8,975)
Balance as of December 31, 2016 (1,005) (1,210)  
Unrealized gains (losses) on Marketable Securities [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2015 (107)    
Other comprehensive income (loss) before reclassifications 308    
Amounts reclassified from other comprehensive income (loss) 201    
Net current period other comprehensive income (loss) 107    
Balance as of December 31, 2016   (107)  
Foreign Currency Translation Adjustments [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2015 (1,035)    
Other comprehensive income (loss) before reclassifications (957)    
Amounts reclassified from other comprehensive income (loss) (263)    
Net current period other comprehensive income (loss) (694)    
Balance as of December 31, 2016 (1,729) (1,035)  
Unrealized Gains (Losses) on Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance as of December 31, 2015 (68)    
Other comprehensive income (loss) before reclassifications 399    
Amounts reclassified from other comprehensive income (loss) (393)    
Net current period other comprehensive income (loss) 792    
Balance as of December 31, 2016 $ 724 $ (68)