FAIR VALUE MEASUREMENTS (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Marketable securities	$ 19,602	$ 27,562
Financial liabilities related to foreign currency derivative hedging contracts	(293)
Earn-Out liability related to the acquisition of ACS	(433)	(378)
Total financial net assets (liabilities)	18,876	27,184
Fair Value, Inputs, Level 2 [Member]
Marketable securities	19,602	27,562
Financial liabilities related to foreign currency derivative hedging contracts	(293)
Earn-Out liability related to the acquisition of ACS	0	0
Total financial net assets (liabilities)	19,309	27,562
Fair Value, Inputs, Level 3 [Member]
Marketable securities	0	0
Financial liabilities related to foreign currency derivative hedging contracts	0
Earn-Out liability related to the acquisition of ACS	(433)	(378)
Total financial net assets (liabilities)	$ (433)	$ (378)

It represents amount of financial assets liabilities fair value disclosure.

No definition available.

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- Definition

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

Fair value as of the balance sheet date of all derivative liabilities designated as foreign currency fair value hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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- Definition

Amount of investment in marketable security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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