SELECTED FINANCIAL STATEMENT INFORMATION (Details 1) (USD $)	Jul. 31, 2011	Oct. 31, 2010
Costs incurred on uncompleted contracts	$ 4,442,000	$ 6,323,000
Estimated earnings	4,059,000	7,603,000
Total costs incurred and estimated earnings on uncompleted percentage-of-completion contracts	8,501,000	13,926,000
Less: Billings to date	(4,876,000)	(8,967,000)
Costs and estimated earnings on uncompleted contracts, net	3,625,000	4,959,000
Included in the accompanying Condensed Consolidated Balance Sheets under the following captions:
Accounts receivable, net (costs and estimated earnings in excess of billings)	3,625,000	5,135,000
Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings)	0	(176,000)
Costs and estimated earnings on uncompleted contracts, net	$ 3,625,000	$ 4,959,000