INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Intangible assets, net
Intangible assets, net	$ 7,919	$ 8,211
Amortization expense	615	658	$ 836
Impairment of intangible assets	78	176	1,142
Intangible assets written off, cost		448	2,092
Intangible assets written off, accumulated amortization		302	$ 950
MSA Signatory Costs
Intangible assets, net
Indefinite-lived intangible assets	2,202	2,202
Licensing agreements
Intangible assets, net
Indefinite-lived intangible assets	350	350
Patent and Trademark
Intangible assets, net
Gross	5,991	5,667
Less: accumulated amortization	(3,303)	(2,936)
Total	2,688	2,731
Impairment of intangible assets	78
Estimated annual average amortization expense:
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	387
Finite-Lived Intangible Assets, Amortization Expense, Year Two	387
Finite-Lived Intangible Assets, Amortization Expense, Year Three	387
Finite-Lived Intangible Assets, Amortization Expense, Year Four	387
Finite-Lived Intangible Assets, Amortization Expense, Year Five	387
Licensing agreements
Intangible assets, net
Gross	3,876	3,876
Less: accumulated amortization	(1,197)	(948)
Total	2,679	$ 2,928
Estimated annual average amortization expense:
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	249
Finite-Lived Intangible Assets, Amortization Expense, Year Two	249
Finite-Lived Intangible Assets, Amortization Expense, Year Three	249
Finite-Lived Intangible Assets, Amortization Expense, Year Four	249
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 249