CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Income Statement [Abstract]
Net sales	$ 692,089	$ 716,592	$ 1,297,255	$ 1,383,955
Cost and expenses:
Cost of sales	578,276	577,567	1,133,337	1,103,768
Selling, general and administrative	40,039	29,503	70,333	67,608
Cost and expenses	618,315	607,070	1,203,670	1,171,376
Operating Income	73,774	109,522	93,585	212,579
Other income (expense):
Interest income	0	13	0	39
Interest expense	(420)	(686)	(851)	(1,113)
Other	7	29	10	63
Other income (expense)	(413)	(644)	(841)	(1,011)
Income before income taxes	73,361	108,878	92,744	211,568
Income tax expense	25,759	37,632	34,461	73,819
Net income	$ 47,602	$ 71,246	$ 58,283	$ 137,749
Earnings per share:
Basic (in usd per share)	$ 2.11	$ 3.13	$ 2.58	$ 6.00
Diluted (in usd per share)	2.11	3.13	2.58	6.00
Dividends per share (in usd per share)	$ 0.22	$ 0.22	$ 0.44	$ 0.44