Accumulated Other Comprehensive Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Accumulated Other Comprehensive Income: [Abstract]
Beginning balance, net of tax effect	$ 142,579	$ 158,751	$ 196,033	$ 129,412
Other comprehensive income, net of tax effect:
Unrealized gains (loss) on available-for-sale securities	66,213	31,369	(15,241)	83,708
Tax effect	(23,000)	(14,000)	5,000	(37,000)
Unrealized gains (loss) on available-for-sale securities, net of tax effect	43,213	17,369	(10,241)	46,708
Amounts reclassified from accumulated other comprehensive income, net of tax effect:
Ending balance, net of tax effect	$ 185,792	$ 176,120	$ 185,792	$ 176,120