Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Nov. 30, 2016	Nov. 30, 2015
EPS:
Net income	$ 661	$ 500
Less: accrued preferred stock dividends	(19)	(19)
Net income available for common shareholders	$ 642	$ 481
Earnings per common share - basic and diluted	$ 0.13	$ 0.1