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.

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+ Details

Revenue - Revenues by Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 21, 2020	Sep. 30, 2020	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 32,680	$ 12,485	$ 16,651	$ 17,656	$ 96,526
Boeing \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenues	4,446	0	0	0	13,484
Lockheed Martin \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	2,310	0
NASA \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenues	10,589	7,379	15,020	8,661	29,604
Major Customers \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenues	$ 15,035	$ 7,379	$ 15,020	$ 10,971	$ 43,088