Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (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, 2012	$ 1,027,004	$ 442,461	$ 584,848	$ (305)
Common Stock, Shares, Outstanding, Beginning Balance at Oct. 31, 2012		72,250
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	139,420		139,420
Other Comprehensive Income	68			68
Common Stock Issued	113,832	113,832
Common Stock Issued (Shares)		3,667
Expenses from Issuance of Common Stock	(358)	(358)
Tax Benefit from Dividends Paid on ESOP Shares	88		88
Dividends Declared	(68,605)		(68,605)
Stockholders' Equity, ending balance at Jul. 31, 2013	1,211,449	555,935	655,751	(237)
Common Stock, Shares, Outstanding, Ending Balance at Jul. 31, 2013		75,917
Stockholders' Equity, beginning balance at Oct. 31, 2013	1,188,596	561,644	627,236	(284)
Common Stock, Shares, Outstanding, Beginning Balance at Oct. 31, 2013	76,099	76,099
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	152,768		152,768
Other Comprehensive Income	176			176
Common Stock Issued	68,264	68,264
Common Stock Issued (Shares)		2,228
Expenses from Issuance of Common Stock	(12)	(12)
Tax Benefit from Dividends Paid on ESOP Shares	88		88
Dividends Declared	(74,076)		(74,076)
Stockholders' Equity, ending balance at Jul. 31, 2014	$ 1,335,804	$ 629,896	$ 706,016	$ (108)
Common Stock, Shares, Outstanding, Ending Balance at Jul. 31, 2014	78,327	78,327