Inventories

12 Months Ended

Dec. 31, 2021

Inventories

Inventories

Note 6. Inventories

A summary of inventories is as follows at December 31 (in thousands):

	2021		2020
Raw materials	$	19,853		7,688
Work-in-progress		1,122		865
Finished goods		15,268		17,252
Total inventories	$	36,243	$	25,805

Work-in-progress represents inventory items in intermediate stages of production by third party manufacturers. For the years ended December 31, 2021, 2020 and 2019, net realizable value inventory adjustments and excess and obsolete inventory charges were $0.9 million, $7.1 million and $2.7 million, respectively, and were recognized in cost of revenues.