Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
Available-for-sale securities
Accumulated other comprehensive income balance, beginning of period	$ 10,945,401	$ 11,203,250	$ 12,616,346	$ 9,382,334
Other comprehensive income (loss):
Unrealized gains (losses), net of taxes of $-0- for all periods presented	(820,553)	750,396	(2,491,498)	2,571,312
Other comprehensive income (loss)	(820,553)	750,396	(2,491,498)	2,571,312
Accumulated other comprehensive income balance, end of period	$ 10,124,848	$ 11,953,646	$ 10,124,848	$ 11,953,646