Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Jul. 31, 2015	Jan. 31, 2015	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013
Statement of Stockholders' Equity [Abstract]
Dividends, per share	$ .34	$ .33	$ 0.165	$ 0.165	$ 0.140	$ 0.140