Accounts Receivable

9 Months Ended

Apr. 30, 2015

Accounts Receivable Additional Disclosures [Abstract]

Accounts Receivable

Accounts Receivable

Accounts receivable consist of the following at:

	April 30, 2015		July 31, 2014
Billed receivables from commercial customers	$	27,340,000	31,681,000
Billed receivables from the U.S. government and its agencies	11,259,000		10,316,000
Unbilled receivables on contracts-in-progress	29,779,000		13,517,000
Total accounts receivable	68,378,000		55,514,000
Less allowance for doubtful accounts	757,000		627,000
Accounts receivable, net	$	67,621,000	54,887,000

Of the unbilled receivables at April 30, 2015 and July 31, 2014, $27,990,000 and $9,990,000, respectively, relates to our two large over-the-horizon microwave system contracts with our large U.S. prime contractor customer (the majority of which related to our North African country end-customer). The remaining unbilled receivables include $1,242,000 and $770,000 at April 30, 2015 and July 31, 2014, respectively, due from the U.S. government and its agencies. We had virtually no retainage included in unbilled receivables at April 30, 2015 and $120,000 of retainage at July 31, 2014. In the opinion of management, substantially all of the unbilled receivables at April 30, 2015 will be billed and collected within one year.

As of April 30, 2015 and July 31, 2014, 41.0% and 18.0%, respectively of total accounts receivable was due from one large U.S. prime contractor customer (the majority of which related to our North African country end-customer).