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v3.19.1

Selected Statements of Operations Data (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | $ 34,050 | $ 37,233 | $ 29,510
North America [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 22,164 | 25,157 | 19,167
Europe [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 362 | 778 | 946
Asia (excluding Philippines) [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 923 | 374 | 355
Philippines [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 6,235 | 4,501 | 4,959
South America (excluding Brazil) [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 671 | 883 | 785
Brazil [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 2,908 | 1,783 | 2,496
Other (including Israel) [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | $ 787 | $ 3,757 | $ 802

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