Contract Assets and Contract Liabilities - Schedule of Allowance for Doubtful Account Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue From Contract With Customer [Abstract]
Allowance for doubtful accounts - beginning balance	$ (1,032)	$ (673)	$ (3,222)
Current year provision	(263)	(791)	(250)
Write-offs, recoveries and the effects of foreign currency exchange	712	432	2,799
Allowance for doubtful accounts - ending balance	$ (583)	$ (1,032)	$ (673)