Concentrations of Credit Risk	12 Months Ended
Jun. 30, 2021
Risks and Uncertainties [Abstract]
Concentrations of Credit Risk	16. Concentrations of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and accounts and trade receivables. The Company maintains its cash at large financial institutions. At June 30, 2021, bank deposits exceeded Federal Deposit Insurance Corporation insured limits. The Company believes that concentrations of credit risk with respect to trade receivables are limited due to the Company’s large customer base. Also, based on the Company’s credit evaluation, trade receivables are often collateralized by the equipment sold. Sales to a federal government agency accounted for approximately 9% and 5% of the Company’s revenues for fiscal 2021 and 2020, respectively. Additionally, no single contract for a federal government facility or other contract accounted for more than 10% of the Company’s revenues for fiscal 2021 or 2020. As of June 30, 2021, there were no accounts receivable due from any individual entity which accounted for greater than 10% of the Company’s accounts receivable at June 30, 2021.

Concentrations of Credit Risk

12 Months Ended

Jun. 30, 2021

16. Concentrations of Credit Risk

Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and accounts and trade receivables. The Company maintains its cash at large financial institutions. At June 30, 2021, bank deposits exceeded Federal Deposit Insurance Corporation insured limits. The Company believes that concentrations of credit risk with respect to trade receivables are limited due to the Company’s large customer base. Also, based on the Company’s credit evaluation, trade receivables are often collateralized by the equipment sold. Sales to a federal government agency accounted for approximately 9% and 5% of the Company’s revenues for fiscal 2021 and 2020, respectively. Additionally, no single contract for a federal government facility or other contract accounted for more than 10% of the Company’s revenues for fiscal 2021 or 2020. As of June 30, 2021, there were no accounts receivable due from any individual entity which accounted for greater than 10% of the Company’s accounts receivable at June 30, 2021.