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Selected Statements of Operations Data (Details) - USD ($) $ in Thousands	12 Months Ended
	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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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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