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Inventories (Details) (USD $)	Jan. 31, 2014	Jul. 31, 2013
Inventory Disclosure [Abstract]
Raw materials and components	$ 55,791,000	$ 52,169,000
Work-in-process and finished goods	30,030,000	29,539,000
Total inventories	85,821,000	81,708,000
Less reserve for excess and obsolete inventories	15,726,000	16,226,000
Inventories, net	70,095,000	65,482,000
Inventory directly related to long-term contracts	1,370,000	1,910,000
Inventory related to contracts from third party commercial customers who outsource their manufacturing to us	$ 617,000	$ 592,000

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Net carrying amount of Inventory directly related to long-term contracts.

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Carrying amount as of the balance sheet date of inventories related to contracts from third-party commercial customers who outsource their manufacturing to the Company.

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Amount before valuation reserves of merchandise or goods held by the entity that are readily available for sale and items held by the entity which are partially complete or in the process of being readied for sale.

+ References

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

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Gross amount of unprocessed items to be consumed in the manufacturing or production process. Also includes purchased parts that will be used as components of a finished product.

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The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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