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Credit Concentrations
12 Months Ended
Dec. 31, 2021
Risks And Uncertainties [Abstract]  
Credit Concentrations
(3)
Credit Concentrations

Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of cash and accounts receivable. The Company maintains its cash, which at times may exceed federally insured limits, in deposit accounts at major financial institutions. Most of the Company’s customers are located in the United States.

For 2021, no customer accounted for more than 10% of the Company's revenues. For 2020, one customer accounted for more than 10% of the Company’s revenue with a total concentration of approximately 11.2%. As of December 31, 2021 and 2020, no single customer accounted for more than 10% of the Company’s accounts receivable.