Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consisted of the following (in thousands):

	September 30, 2018		December 31, 2017
Finished goods	$	27,067	$	21,668
Parts and materials	13,058		10,613
Work in progress	7,090		1,036
Total inventories	$	47,215	$	33,317