4. Inventories, net

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

4. Inventories, net

Inventories, which are presented net of allowance for obsolete and slow-moving inventory, consisted of the following:

	March 31, 2021		December 31, 2020
Finished goods	$	2,350	$	1,975
Work in process		3,441		3,288
Raw materials		4,720		4,178
	$	10,511	$	9,441

Allowances for slow-moving, excess, or obsolete inventory are used to state the Company’s inventories at the lower of cost or net realizable value. The allowances were approximately $809 at March 31, 2021, compared with approximately $520 at December 31, 2020.