Accounts Receivable and Contract Assets, Net - Schedule of Changes in Allowance for Credit Losses for Contract Assets (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Allowance for Credit Loss [Abstract]
Balance, beginning of period	$ (28)
Recovery (provision) for expected credit losses	8	$ (20)
Balance, end of period	$ (20)	$ (20)