CONVERTIBLE NOTES (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Convertible Debt

As of December 31, 2021, the outstanding convertible promissory notes net of debt discount and issue costs are summarized as follows:

	December 31, 2021						December 31, 2020
	Face Amount		Debt Discount		Carrying Amount		Face Amount		Debt Discount		Carrying Amount
Convertible senior notes	$	38,750	$	9,508	$	29,242	$	38,750	$	11,737	$	27,013
Convertible notes-Autosport:
$1,536 unsecured note	154		—		154		1,024		308		716
	38,904		9,508		29,396		39,774		12,045		27,729
Less: Current portion	154		—		154		768		205		563
Long-term portion	$	38,750	$	9,508	$	29,242	$	39,006	$	11,840	$	27,166

Interest Income and Interest Expense Disclosure

The interest expense recognized with respect to the Convertible Senior Notes for the years ended December 31, 2021 and 2020 were as follows:

	2021		2020
Contractual interest expense	$	2,616	$	2,566
Amortization of debt discounts	2,229		1,867
Total	$	4,845	$	4,433