(15) MAJOR CUSTOMERS

The Company did not have any customers that contributed 10% or more of total revenue in any of the three- and six-month periods ended June 30, 2022 and 2021.

At June 30, 2022, one customer accounted for 10% or more of the Company’s accounts receivable balance, representing approximately 26% of the total accounts receivable in the aggregate. At December 31, 2021, one customer accounted for 10% or more of the Company’s accounts receivable balance, representing approximately 28% of total accounts receivable in the aggregate. The Company performs ongoing credit evaluations of its customers and generally does not require collateral on accounts receivable. The Company maintains an allowance for doubtful accounts and historical losses have been within management’s expectations.