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SELECTED FINANCIAL STATEMENT INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2012 | Oct. 31, 2011
--- | --- | ---
Finished products | $ 92,450 | $ 86,487
Work in process | 20,475 | 19,708
Materials, parts, assemblies and supplies | 67,555 | 52,173
Contracts in process | 8,081 | 8,291
Less: Billings to date | (1,166) | (1,692)
Inventories, net of valuation reserves | $ 187,395 | $ 164,967

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