Inventories (Tables)

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories as of March 31, 2022 and December 31, 2021 consist of the following (in thousands):

	March 31, 2022			December 31, 2021
Finished goods	$	5,591		$	9,594
Semi-finished goods and work-in-process		25,119			25,968
Raw materials		9,839			9,443
Materials in-transit		1,953			95
Less: inventory reserve		(5,555	)		(5,730	)
Inventories, net	$	36,947		$	39,370

Changes in Inventory Reserve

Changes in inventory reserve for the three months ended March 31, 2022 and 2021 are as follows (in thousands):

	Three Months Ended
	March 31, 2022			March 31, 2021
Beginning balance	$	(5,730	)	$	(5,901	)
Change in reserve
Inventory reserve charged to costs of sales		(1,607	)		(2,164	)
Sale of previously reserved inventory		1,452			634
		(155	)		(1,530	)
Write off		211			902
Translation adjustments		119			248
Ending balance	$	(5,555	)	$	(6,281	)