The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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INTANGIBLE ASSETS (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Capitalized patent costs and trademarks			$ 84	$ 0
Amortization expense	$ 8	$ 5	$ 20	15
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Description of expire			issued patents expire between the years 2022 and 2039
Amortization method			straight-line basis
Patents [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated lives of intangible assets			17 years
Patents [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated lives of intangible assets			19 years
Patents And Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Capitalized patent costs and trademarks			$ 60	52
Amortization expense	$ 9	$ 7	$ 25	$ 20
Capitalized Software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated lives of intangible assets			5 years