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Concentrations of Credit and Other Risks (Details) - Customer Concentration Risk	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Sales Revenue | Raytheon Technologies
Concentration Risk [Line Items]
Concentration risk, percentage		16.00%
Sales Revenue | U.S. Government
Concentration Risk [Line Items]
Concentration risk, percentage	20.00%	10.00%
Accounts Receivable | Two Customers
Concentration Risk [Line Items]
Concentration risk, percentage	40.00%		43.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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+ References

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