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Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data	Jul. 31, 2011	Oct. 31, 2010
Condensed Consolidated Balance Sheets (Unaudited) [Abstract]
Accounts receivable, allowance	$ 4,271	$ 4,235
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	2,000	2,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	150,000	150,000
Common stock, issued (in shares)	59,510	53,779
Common stock, outstanding (in shares)	59,510	53,779

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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