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SHAREHOLDERS' EQUITY (Schedule Of Equity-Based Compensation Expense) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Total share-based compensation expense $ 867 $ 1,172
Cost of Revenue [Member]    
Total share-based compensation expense 60 31
Research And Development Expense [Member]    
Total share-based compensation expense 99 201
Selling And Marketing Expense [Member]    
Total share-based compensation expense 268 382
General And Administrative Expense [Member]    
Total share-based compensation expense $ 440 $ 558