Inventories

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are as follows (in thousands):

	December 31,
	2021		2020
Raw materials	$	5,610	$	7,190
Finished goods	13,985		15,705
Inventories	19,595		22,895
Less reserve for excess and obsolete inventory	(10,141)		(11,058)
Inventories, net	$	9,454	$	11,837

Changes in the reserve for excess and obsolete inventory are as follows (in thousands):

	Years ended December 31,
	2021		2020
Balance, beginning of year	$	11,058	$	5,698
Charged to provisions	623		12,261
Deductions for sales and disposals	(1,540)		(6,901)
Balance, end of the year	$	10,141	$	11,058

The provisions recorded in the year ended December 31, 2021 were $0.6 million for the CT segment and nil for the DA segment. The provisions recorded in the year ended December 31, 2020 were $8.4 million for the CT segment and $3.9 million for the DA segment.