7. INVENTORY

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

7. INVENTORY

7. INVENTORY

Inventory consists of the following (in thousands):

		December 31,
		2021		2020
Raw materials	$	1,780	$	-
	$	1,780	$	-

We recorded inventory write-downs of $48,000 in 2021, $168,000 in 2020 and $2.2 million in 2019.