Inventories

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Inventories

4. Inventories

Inventories consist of the following (in thousands):

	September 30, 2019		December 31, 2018
Raw materials and purchased parts	$	3,597	$	4,092
Work in progress		2,012		3,166
Finished goods		22,842		21,529
Total inventories	$	28,451	$	28,787