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Revenue - Summary of Sales from Contracts with Customers Disaggregated by Categories (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 7,330	$ 5,680	$ 20,760	$ 15,899
Fixed-price
Disaggregation of Revenue [Line Items]
Revenue	1,771	1,103	3,797	2,077
Cost-plus
Disaggregation of Revenue [Line Items]
Revenue	3,779	2,800	10,867	10,686
Time and Material
Disaggregation of Revenue [Line Items]
Revenue	1,780	1,777	6,096	3,136
Related party
Disaggregation of Revenue [Line Items]
Revenue	5,957	4,673	16,030	13,469
Commercial
Disaggregation of Revenue [Line Items]
Revenue	$ 1,373	$ 1,007	$ 4,730	$ 2,430

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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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