FAIR VALUE MEASUREMENT (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Financial Assets not Measured at Fair Value on a Recurring Basis

The following tables present the financial assets not measured at fair value on a recurring basis as of December 31, 2021 and December 31, 2020:

	December 31, 2021
	Carrying Value		Estimated Fair Value		Fair Value Hierarchy	Financial Statement Line Item
Financial assets:
Notes receivable - current	$	8	$	8	Level 3	Receivables
Notes receivable - non-current	3,391		3,391		Level 3	Other long-term assets
Advance payment - non-current	8,000		8,000		Level 3	Other long-term assets
Total financial assets	$	11,399	$	11,399

	December 31, 2020
	Carrying Value		Estimated Fair Value		Fair Value Hierarchy	Financial Statement Line Item
Financial assets:
Notes receivable - non-current	$	815	$	815	Level 3	Other long-term assets
Total financial assets	$	815	$	815

Liabilities Measured at Fair Value on a Recurring Basis

The following table presents the liabilities measured at fair value on a recurring basis, by input level, in the Consolidated Balance Sheet at December 31, 2021:

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Financial liabilities:
Public Warrants	$	4,255	—		—		4,255
Private Warrants	—		2,266		—		2,266
Total financial liabilities	$	4,255	$	2,266	$	—	$	6,521