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.

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REVENUE RECOGNITION AND RELATED ALLOWANCES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenues	$ 49,774	$ 52,887
Contract with Customer, Asset, Net	100		$ 100
Deferred Revenue, Current	300		$ 500
Deferred Revenue, Revenue Recognized	100
Performance Obligation From Prior Period [Member]
Revenues	(2,400)	$ (600)
Sales of contract manufactured products [Member]
Revenue, Remaining Performance Obligation, Amount	7,900
Product Development Services [Member]
Revenue, Remaining Performance Obligation, Amount	$ 1,500
Minimum \| Product Development Services [Member]
Revenue, Remaining Performance Obligation, Remaining Period	6 months
Maximum \| Product Development Services [Member]
Revenue, Remaining Performance Obligation, Remaining Period	15 months
Customer One [Member]
Concentration Risk, Percentage	31.00%	35.00%
Customer Two [Member]
Concentration Risk, Percentage	23.00%	23.00%
Customer Three [Member]
Concentration Risk, Percentage	18.00%	23.00%
Customer One Two And Three [Member]
Concentration Risk, Percentage	90.00%