Inventories

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Inventories

(8) Inventories

Components of inventories at December 31, 2021 and 2020 are summarized as follows:

(in thousands)	2021		2020
Raw materials	$	23,530	$	23,762
Work in process	5,173		5,912
Finished goods and parts	64,184		86,993
Inventories	$	92,887	$	116,667

We record a reserve to the carrying value of our inventory to reflect the rapid technological change in our industry that impacts the market for our products. The inventory reserve was $16,509 and $20,125 as of December 31, 2021 and 2020, respectively.

In June 2020, as part of our assessment of prospective sales and evaluation of inventory, we determined the end-of-life for certain product lines. The end-of-life determination for these products reflects management's plans to focus our resources that are better aligned with our new strategic focus, as further discussed in Note 25. As a result, for the year ended December 31, 2020, we recorded a charge of $10,894 to products costs of sales, primarily attributable to inventory, accessories and inventory commitments for these products. We have ceased production for these items. There was no material product line life ended for year ended December 31, 2021.