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Segment Reporting - Narrative (Details) - Revenue Benchmark	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Mobile connectivity | Mobile Comm Product Sales | Product Concentration Risk
Segment Reporting Information [Line Items]
Percent of consolidated net sales	16.00%	18.00%
Mobile connectivity | VSAT Airtime Service Sales | Product Concentration Risk
Segment Reporting Information [Line Items]
Percent of consolidated net sales	51.00%	53.00%
Inertial navigation | FOG System Sales | Product Concentration Risk
Segment Reporting Information [Line Items]
Percent of consolidated net sales	14.00%	14.00%
Inertial navigation | TACNAV | Product Concentration Risk
Segment Reporting Information [Line Items]
Percent of consolidated net sales	12.00%	3.00%
Non-US | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Percent of consolidated net sales	62.00%	58.00%
Singapore | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Percent of consolidated net sales	10.00%	11.00%

X

- Definition

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.

+ References

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