Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Components of Inventories

Inventories as of March 31, 2019 and December 31, 2018 were as follows (in thousands):

	March 31,		December 31,
	2019		2018
Work-in-process component parts	$	29,043	$	30,340
Finished goods (1)		118,311		162,705
Total inventory	$	147,354	$	193,045

(1) The change between March 31, 2019 and December 31, 2018 primarily relates to the accounting impact of one of our airline partner agreements transitioning to the turnkey model (see Note 1, “Basis of Presentation,” for additional information).