Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2016	Oct. 31, 2015
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 8,101	$ 5,956
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	52,032,000	51,558,000
Treasury stock, shares	3,290,000	3,290,000