Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended
	Nov. 30, 2015	Nov. 30, 2014
Available-for-sale securities
Accumulated other comprehensive income balance, beginning of period	$ 7,087,889	$ 12,616,346
Other comprehensive income (loss):
Unrealized gains (losses), net of taxes of $-0- for all periods presented	469,547	(1,670,945)
Other comprehensive income (loss)	469,547	(1,670,945)
Accumulated other comprehensive income balance, end of period	$ 7,557,436	$ 10,945,401