FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2023

FAIR VALUE MEASUREMENTS

Summary of the net gain on changes in fair value related to warrants

	Year ended		Year ended
	December 31, 2023		December 31, 2022
Private Warrants	$	254	$	231
Foxconn Warrants		170		153
Net gain on changes in fair value	$	424	$	384

Summary of the valuation of financial instruments

The following tables summarize the valuation of our financial instruments (in thousands):

	Total		Quoted prices in active markets (Level 1)		Prices with observable inputs (Level 2)		Prices with unobservable inputs (Level 3)
December 31, 2023
Cash and cash equivalents	$	87,096	$	87,096	$	—	$	—
Short-term investments		—		—		—		—
Private Warrants		—		—		—		—
Foxconn Warrants		—		—		—		—

	Total		Quoted prices in active markets (Level 1)		Prices with observable inputs (Level 2)		Prices with unobservable inputs (Level 3)
December 31, 2022
Cash and cash equivalents	$	121,358	$	121,358	$	—	$	—
Short-term investments		100,297		—		100,297		—
Private Warrants		254		—		—		254
Foxconn Warrants		170						170

Schedule of loss on fair value recognized in earnings

The following table summarizes the changes in our Level 3 financial instruments (in thousands):

	Balance at December 31, 2022		Additions		Settlements		Gain on fair value adjustments included in earnings		Balance at December 31, 2023
Private Warrants	$	254		—		—		(254)	$	—
Foxconn Warrants		170				—		(170)		—