Earnings Per Share (Computation of EPS) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Earnings Per Share [Abstract]
Net income (loss)	$ 14,319	$ 7,841	$ 4,807
Basic weighted average shares outstanding	17,348	17,772	17,106
Stock options and other share-based awards	91	71	42
Common stock warrants	532	517	399
Diluted weighted average shares outstanding	17,971	18,360	17,547
Net income per share, Basic	$ 0.83	$ 0.44	$ 0.28
Net income per share, Diluted	$ 0.80	$ 0.43	$ 0.27