Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Oct. 31, 2012	Oct. 31, 2011
Accounts receivable, allowances	$ 6,072	$ 2,489
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, shares authorized	2,000	2,000
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	400,000	400,000
Common Stock, shares outstanding	150,899	143,308
Treasury stock, shares	6,365	13,956