Accounts Receivable and Contract Assets, Net - Schedule of Changes in Allowance for Credit Losses for Accounts Receivable (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Allowance for Credit Loss [Abstract]
Balance, beginning of period	$ (1,125)	$ (711)
Provision for expected credit losses	(743)	(148)
Write-offs	115	49
Balance, end of period	$ (1,753)	$ (810)