Earnings Per Share (Computation of EPS) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012
Earnings Per Share [Abstract]
Net income	$ 18,067	$ 14,319	$ 7,841
Basic weighted average shares outstanding	16,720	17,348	17,772
Stock options and other share-based awards	227	91	71
Common stock warrants		532	517
Diluted weighted average shares outstanding	16,947	17,971	18,360
Net income per share, Basic	$ 1.08	$ 0.83	$ 0.44
Net income per share, Diluted	$ 1.07	$ 0.80	$ 0.43