Consolidated Condensed Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 31, 2013	Oct. 31, 2012
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 4,705	$ 4,374
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares, issued	49,748,000	49,447,000
Treasury stock, shares	1,431,989	1,006,512