Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Basic and diluted earnings per share:
Net income	$ 4,095	$ 3,741
Less: accrued preferred stock dividends	(76)	(76)
Net income available to common shareholders for basic and diluted EPS computation	$ 4,019	$ 3,665
Weighted average common shares outstanding for basic and diluted EPS computation	4,861,590	4,861,590
Earnings per common share - basic and diluted	$ 0.83	$ 0.75