Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends per share paid (in dollars per share)	$ 0.52	$ 0.52	$ 0.52