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INTANGIBLE ASSETS, NET (Schedule Of Intangible Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]      
Original amounts $ 16,634 $ 15,176  
Accumulated amortization 8,736 8,600  
Intangible assets, net $ 7,898 6,576  
Useful lives 7 years    
Amortization expense $ 136 0 $ 1,544
Intangible assets acquired 3,274 3,412 $ 1,407
Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Original amounts 13,755 13,109  
Accumulated amortization 8,600 8,600  
Intangible assets, net 5,155 4,509  
Intangible assets acquired 646    
Intangible assets acquired, not resulted in cash flows 18    
Software development costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Original amounts 2,879 2,067  
Accumulated amortization 136  
Intangible assets, net $ 2,743 $ 2,067