Unearned Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Revenue Recognition And Deferred Revenue [Abstract]

Schedule of Unearned Revenue by Segment

Unearned revenue by segment was as follows:

	December 31, 2018		December 31, 2017
Automotive	$	1,597	$	—
Industrial		—		4,889
Total	$	1,597	$	4,889

Schedule of Changes in Unearned Revenue

Changes in unearned revenue were as follows:

Year Ended December 31, 2018
Balance, beginning of period	$	4,889
Additions to unearned revenue		21,774
Reclassified to revenue		(19,677	)
Reclassified to liabilities held for sale		(5,351	)
Currency impacts		(38	)
Balance, end of period	$	1,597