Concentrations of Credit Risk

12 Months Ended

Jun. 30, 2018

Risks and Uncertainties [Abstract]

Concentrations of Credit Risk

15. Concentrations of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts and trade receivables.  The Company maintains its cash and cash equivalents at large financial institutions. At June 30, 2018, bank deposits exceeded Federal Deposit Insurance Corporation insured limits. Concentrations of credit risk with respect to trade receivables are limited due to a 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 8% and 22% of the Company’s revenues for fiscal 2018 and 2017, respectively. Additionally, no single contract for a federal government facility accounted for more than 10% of the Company’s revenues for fiscal 2018 or 2017. 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, 2018.