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SELECTED STATEMENTS OF OPERATIONS DATA (Narrative) ( Details) - item | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
SELECTED STATEMENTS OF OPERATIONS DATA [Abstract] |  |  |
Number of reportable segments | 1 |  |
Segment information and revenues from principal customers: |  |  |
Number of customers exceeding threshold | 2 | 3 | 2
Brazil [Member] | Revenues [Member] | Customers [Member] |  |  |
Segment information and revenues from principal customers: |  |  |
Single customer purchases percent of total revenues | 14.30% | 22.20% | 10.70%
Philippines [Member] | Revenues [Member] | Customers [Member] |  |  |
Segment information and revenues from principal customers: |  |  |
Single customer purchases percent of total revenues | 43.20% | 14.90% | 15.50%
Israel [Member] | Revenues [Member] | Customers [Member] |  |  |
Segment information and revenues from principal customers: |  |  |
Single customer purchases percent of total revenues |  | 11.70% |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 + Details
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