Consolidated Condensed Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jul. 31, 2012	Oct. 31, 2011
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 4,102	$ 4,826
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	70,000	70,000
Common stock, shares, issued	48,971	48,015
Treasury stock, shares	1,078	169