Inventory

12 Months Ended

Dec. 31, 2019

Inventories are stated at the lower of cost and net realizable value. Cost is determined using the weighted average cost of raw materials which approximates the FIFO method and includes allocations of manufacturing labor and overhead. Included in finished goods at December 31, 2019 and December 31, 2018 was $1.4 million and $1.4 million, respectively, of trial and evaluation hardware units. Provisions are made to reduce excess, obsolete or slow-moving inventories to their net realizable value. Inventories consisted of the following at December 31 (in thousands):



	2019		2018
Raw materials	$	20,789	$	19,670
Finished goods	18,056		14,093
Total inventory	$	38,845	$	33,763