Operating Segments and Related Disclosures - Summary of Customers that Represented More than 10% of Net Sales (Details) - Customers - Sales Revenue, Net	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lockheed Martin
Revenue, Major Customer [Line Items]
Percentage of net sales	33.00%	35.00%	31.00%	34.00%
NASA
Revenue, Major Customer [Line Items]
Percentage of net sales	19.00%	21.00%	21.00%	22.00%
Raytheon Technologies Corporation
Revenue, Major Customer [Line Items]
Percentage of net sales	17.00%	15.00%	17.00%	16.00%