For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Lockheed Martin Corporation
Revenue, Major Customer [Line Items]
Percentage of net sales	35.00%	34.00%	34.00%	32.00%
NASA
Revenue, Major Customer [Line Items]
Percentage of net sales	21.00%	22.00%	22.00%	21.00%
Raytheon Technologies Corporation
Revenue, Major Customer [Line Items]
Percentage of net sales	15.00%	15.00%	16.00%	17.00%
United Launch Alliance
Revenue, Major Customer [Line Items]
Percentage of net sales		10.00%		11.00%