Accounts Receivable and Contract Assets, Net - Schedule of Changes in Allowance for Credit Losses for Accounts Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Allowance for Credit Loss [Abstract]
Balance, beginning of period	$ (1,753)	$ (810)	$ (1,125)	$ (711)
Provision for expected credit losses	(585)	(241)	(1,328)	(389)
Write-offs	81		196	49
Balance, end of period	$ (2,257)	$ (1,051)	$ (2,257)	$ (1,051)