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SIGNIFICANT ACCOUNTING POLICIES (Schedule of Other Intangible Assets Depreciation Rates) (Details)
 12 Months Ended
Dec. 31, 2017
Core Technology [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 12.50%
Core Technology [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 50.00%
Customer Relationships [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 14.70%
Customer Relationships [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 33.30%
Trademark [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 12.50%
Trademark [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 50.00%
Customer backlog [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 50.00%
Customer backlog [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Other intangible assets amortization rate 100.00%