Consolidated Condensed Statement of Changes in Shareholders' Equity (unaudited) (Parentheticals) (USD $)	3 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Oct. 31, 2013	Jul. 31, 2013
Statement Of Stockholders Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.15