INVENTORIES

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Inventories

5. INVENTORIES

A summary of inventories is as follows:

	March 31,		December 31,
	2022		2021
Raw materials	$	2,356	$	2,355
Finished goods		2,182		1,955
Total inventories	$	4,538	$	4,310

Manufacturing overhead costs primarily include management’s best estimate and allocation of the labor costs incurred related to acquiring finished goods from the Company’s contract manufacturer. Labor costs include wages, taxes and benefits for employees involved in warehousing, logistics coordination, material sourcing, and production planning activities.

For the three months ended March 31, 2022 and 2021, net realizable value inventory adjustments and excess and obsolete inventory were charges of $0 and $75, respectively, and were recognized in cost of sales.