Inventories (Tables)

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consist of the following (in thousands):

	December 31,
	2020		2019
Finished goods	$	16,461	$	26,507
Parts and materials		19,098		21,419
Work in progress		2,592		2,237
Total inventories	$	38,151	$	50,163