Accounts Receivable and Contract Assets, Net - Schedule of Changes in Sales Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounts Receivable Net [Abstract]
Balance, beginning of period	$ (375)	$ (195)	$ (175)	$ (200)
Reductions	225		25
Write-offs	0	4	0	9
Balance, end of period	$ (150)	$ (191)	$ (150)	$ (191)