REVENUES - Schedule of Principal Transactions Revenue (Details)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Revenue from External Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%
Sale of products
Revenue from External Customer [Line Items]
Concentration risk, percentage	92.10%	96.40%
Maintenance and support agreements
Revenue from External Customer [Line Items]
Concentration risk, percentage	4.60%	2.90%
Long term research and development contracts
Revenue from External Customer [Line Items]
Concentration risk, percentage	3.30%	0.70%

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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