Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Stockholders' Equity, beginning balance at Oct. 31, 2014	$ 1,308,602	$ 636,835	$ 672,004	$ (237)
Common Stock, Shares, Outstanding, Beginning Balance at Oct. 31, 2014		78,531
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	92,978		92,978
Other Comprehensive Income (Loss)	(827)			(827)
Common Stock Issued	8,995	$ 8,995
Common Stock Issued (Shares)		236
Expenses from Issuance of Common Stock	(137)	$ (137)
Tax Benefit from Dividends Paid on ESOP Shares	32		32
Dividends Declared	(25,168)		(25,168)
Common Stock, Shares, Outstanding, Ending Balance at Jan. 31, 2015		78,767
Stockholders' Equity, ending balance at Jan. 31, 2015	1,384,475	$ 645,693	739,846	(1,064)
Stockholders' Equity, beginning balance at Oct. 31, 2015	$ 1,426,312	$ 721,419	705,748	(855)
Common Stock, Shares, Outstanding, Beginning Balance at Oct. 31, 2015	80,883	80,883
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 97,790		97,790
Other Comprehensive Income (Loss)	368			368
Common Stock Issued	10,658	$ 10,658
Common Stock Issued (Shares)		189
Expenses from Issuance of Common Stock	(21)	$ (21)
Tax Benefit from Dividends Paid on ESOP Shares	30		30
Dividends Declared	$ (26,729)		(26,729)
Common Stock, Shares, Outstanding, Ending Balance at Jan. 31, 2016	81,072	81,072
Stockholders' Equity, ending balance at Jan. 31, 2016	$ 1,508,408	$ 732,056	$ 776,839	$ (487)