Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 29, 2016	Feb. 28, 2015
EPS:
Net income	$ 731	$ 1,119	$ 1,231	$ 1,514
Less: accrued preferred stock dividends	(19)	(19)	(38)	(38)
Net income available for common shareholders	$ 712	$ 1,100	$ 1,193	$ 1,476
Earnings per common share - basic and diluted (in dollars per share)	$ 0.15	$ 0.23	$ 0.25	$ 0.30