Inventory

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventory

5. Inventory

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 first-in, first-out (“FIFO”) method and includes allocations of manufacturing labor and overhead. Included in finished goods at March 31, 2020 and December 31, 2019 was $1.5 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. Inventory consisted of the following at March 31, 2020 and December 31, 2019 (in thousands):

	March 31, 2020		December 31, 2019
Raw materials	$	21,808	$	20,789
Finished goods		25,114		18,056
Total inventory	$	46,922	$	38,845