Inventories

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Inventories

5.  INVENTORIES

Inventories consist of the following (in thousands):

	December 31,
	2020		2019
Finished goods	$	16,461	$	26,507
Parts and materials		19,098		21,419
Work in progress		2,592		2,237
Total inventories	$	38,151	$	50,163

We include freight costs incurred for shipping inventory to our clients in the Cost of product sales caption in the accompanying consolidated statements of operations. See Note 18 - Inventory Write-down for further detail.