Accounts Receivable
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jul. 31, 2012
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Accounts Receivable Additional Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Accounts Receivable | (3) Accounts Receivable Accounts receivable consist of the following at July 31, 2012 and 2011:
Unbilled receivables on contracts-in-progress include $3,320,000 and $4,487,000 at July 31, 2012 and 2011, respectively, due from the U.S. government and its agencies. There was $13,000 and $28,000 of retainage included in unbilled receivables at July 31, 2012 and July 31, 2011, respectively. In the opinion of management, substantially all of the unbilled balances will be billed and collected within one year. |