Accounts Receivable

3 Months Ended

Oct. 31, 2022

Accounts receivable consist of the following at:


	October 31, 2022		July 31, 2022
Receivables from commercial and international customers	$	58,863,000	59,922,000
Unbilled receivables from commercial and international customers	45,109,000		39,826,000
Receivables from the U.S. government and its agencies	22,427,000		24,776,000
Unbilled receivables from the U.S. government and its agencies	4,948,000		1,524,000
Total accounts receivable	131,347,000		126,048,000
Less allowance for doubtful accounts	2,560,000		2,337,000
Accounts receivable, net	$	128,787,000	123,711,000

Unbilled receivables as of October 31, 2022 relate to contracts-in-progress for which revenue has been recognized, but for which we have not yet earned the right to bill the customer for work performed to-date. Under ASC 606, unbilled receivables constitute contract assets. Management estimates that a substantial portion of the amounts not yet billed at October 31, 2022 will be billed and collected within one year.

As of October 31, 2022, except for the U.S. government (and its agencies), Verizon and AT&T, which represented 20.8%, 18.3% and 11.3%, of total accounts receivable, respectively, there were no other customers which accounted for greater than 10% of total accounts receivable.

As of July 31, 2022, except for the U.S. government (and its agencies) and Verizon, which represented 20.9% and 13.4% of total accounts receivable, respectively, there were no other customers which accounted for greater than 10% of total accounts receivable.