Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity, beginning balance at Oct. 31, 2011	$ 996,923	$ 446,791	$ 550,584	$ (452)
Comprehensive Income:
Net income	119,847		119,847
Other comprehensive income	147			147
Comprehensive Income	119,994
Common Stock Issued	22,198	22,198
Common Stock Repurchased	(26,528)	(26,528)
Tax Benefit from Dividends Paid on ESOP Shares	110		110
Dividends Declared	(85,693)		(85,693)
Stockholders' Equity, ending balance at Oct. 31, 2012	1,027,004	442,461	584,848	(305)
Comprehensive Income:
Net income	134,417		134,417
Other comprehensive income	21			21
Comprehensive Income	134,438
Common Stock Issued	119,552	119,552
Expenses from Issuance of Common Stock	(369)	(369)
Tax Benefit from Dividends Paid on ESOP Shares	117		117
Dividends Declared	(92,146)		(92,146)
Income Loss Hedging Activities Of Equity Method Investments [Abstract]
Hedging activities of equity method investments	(284)
Stockholders' Equity, ending balance at Oct. 31, 2013	1,188,596	561,644	627,236	(284)
Comprehensive Income:
Net income	143,801		143,801
Other comprehensive income	47			47
Comprehensive Income	143,848
Common Stock Issued	75,203	75,203
Expenses from Issuance of Common Stock	(12)	(12)
Tax Benefit from Dividends Paid on ESOP Shares	118		118
Dividends Declared	(99,151)		(99,151)
Income Loss Hedging Activities Of Equity Method Investments [Abstract]
Hedging activities of equity method investments	(213)
Benefit activities of equity method investments	(24)
Stockholders' Equity, ending balance at Oct. 31, 2014	$ 1,308,602	$ 636,835	$ 672,004	$ (237)