REVENUE RECOGNITION - Product Sales (Details) - Customers [Member] - Revenue from Contract with Customer, Product and Service Benchmark	3 Months Ended
Mar. 31, 2020 customer
Product Sales
Number of distributors accounting for product revenue	3
Distributor One [Member]
Product Sales
Concentration Risk, Percentage	49.00%
Distributor Two [Member]
Product Sales
Concentration Risk, Percentage	37.00%
Distributor Three [Member]
Product Sales
Concentration Risk, Percentage	14.00%

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
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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