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Selected Statements of Operations Data (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | $ 37,233 | $ 29,510 | $ 18,673
North America [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 25,157 | 19,167 | 1,018
Europe [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 778 | 946 | 1,204
Asia (excluding Philippines) [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 374 | 355 | 576
Philippines [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 4,501 | 4,959 | 8,071
South America (excluding Brazil) [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 883 | 785 | 2,456
Brazil [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | 1,783 | 2,496 | 3,487
Other (including Israel) [Member] |  |  |
Schedule of revenues from sales to unaffiliated customers |  |  |
Revenues | $ 3,757 | $ 802 | $ 1,861

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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