Inventories

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventories

(4) Inventories

Components of inventories at March 31, 2020 and December 31, 2019 are summarized as follows:

(in thousands)	March 31, 2020		December 31, 2019
Raw materials	$	35,736	$	42,066
Work in process	12,502		5,496
Finished goods and parts	65,002		63,544
Inventories	$	113,240	$	111,106