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Concentrations of Credit and Other Risks
3 Months Ended
Mar. 31, 2021
Risks and Uncertainties [Abstract]  
Concentrations of Credit and Other Risks Concentrations of Credit and Other Risks
The following customers accounted for 10% or more of the Company's revenues for the periods presented:
Three Months Ended March 31,
20212020
Raytheon Technologies(1)16%
U.S. Government20%10%
(1) Represents less than 10% of total revenues
Financial instruments that potentially expose the Company to concentrations of credit risk consist principally of accounts receivable. As of March 31, 2021 and December 31, 2020, two customers accounted for approximately 40% and 43%, respectively, of net accounts receivable. No other customers accounted for 10% or more of net accounts receivable in either of these periods.