XML 59 R12.htm IDEA: XBRL DOCUMENT v2.4.0.8
Accounts Receivable
 6 Months Ended
Jan. 31, 2014
Accounts Receivable Additional Disclosures [Abstract]  
Accounts Receivable
(6)    Accounts Receivable

Accounts receivable consist of the following at:
 
 
January 31, 2014
 
July 31, 2013
Billed receivables from commercial customers
 
$
36,018,000

 
40,005,000

Billed receivables from the U.S. government and its agencies
 
8,757,000

 
8,114,000

Unbilled receivables on contracts-in-progress
 
12,799,000

 
2,399,000

Total accounts receivable
 
57,574,000

 
50,518,000

Less allowance for doubtful accounts
 
695,000

 
603,000

Accounts receivable, net
 
$
56,879,000

 
49,915,000



Unbilled receivables on contracts-in-progress include $1,334,000 and $699,000 at January 31, 2014 and July 31, 2013, respectively, due from the U.S. government and its agencies. We had virtually no retainage included in unbilled receivables at both January 31, 2014 and July 31, 2013. In the opinion of management, a substantial portion of the unbilled balances will be billed and collected within one year.

As of January 31, 2014, one customer, which is also the prime contractor that we perform work for on our two North African country end-customer over-the-horizon microwave system contracts, accounts for 17.9% of total accounts receivable.