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SHAREHOLDERS' EQUITY (Schedule Of Equity-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Total share-based compensation expense | $ 2,053 | $ 1,980 | $ 1,203
Cost of Revenue [Member] |  |  |
Total share-based compensation expense | 71 | 42 | 54
Research And Development Expense [Member] |  |  |
Total share-based compensation expense | 366 | 313 | 229
Selling And Marketing Expense [Member] |  |  |
Total share-based compensation expense | 708 | 640 | 292
General And Administrative Expense [Member] |  |  |
Total share-based compensation expense | $ 908 | $ 985 | $ 628

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