INTANGIBLE ASSETS, NET - Aggregate intangible asset amortization expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
INTANGIBLE ASSETS, NET
Total amortization expense	$ 655	$ 619
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net
Impairment of intangible assets	$ 1,375	$ 35
Patents and trademarks
INTANGIBLE ASSETS, NET
Impairment of intangible assets	772
Patent
INTANGIBLE ASSETS, NET
Impairment of intangible assets	552
Finite lived intangible assets disposed	1,501
Net book value disposed	0
Trademarks abandoned
INTANGIBLE ASSETS, NET
Impairment of intangible assets	51
Cost of goods sold
INTANGIBLE ASSETS, NET
Total amortization expense	11	10
Research and development
INTANGIBLE ASSETS, NET
Total amortization expense	$ 644	$ 609