Inventories (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following at December 31, 2019 and 2018 (in thousands):

	2019		2018
Finished goods	$	26,507	$	26,636
Parts and materials		21,419		13,704
Work in progress		2,237		5,324
Total inventories	$	50,163	$	45,664