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INTANGIBLE ASSETS - Weighted average remaining useful life (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Loss on impairment of long-lived assets	$ 0	$ 0
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period (in years)	2 years 2 months 12 days
Capitalized software development
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period (in years)	2 years 3 months 18 days
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period (in years)	2 years

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