Fair Value of Financial Instruments (Details) - USD ($)	3 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Jul. 31, 2015
Maximum [Member]
Assets [Abstract]
Gross unrealized gains	$ 100,000	$ 100,000
Recurring [Member]
Assets [Abstract]
Investment securities available for sale	1,447,491		$ 1,433,732
Recurring [Member] | Level 1 [Member]
Assets [Abstract]
Investment securities available for sale	1,447,491		1,433,732
Recurring [Member] | Level 2 [Member]
Assets [Abstract]
Investment securities available for sale	0		0
Recurring [Member] | Level 3 [Member]
Assets [Abstract]
Investment securities available for sale	$ 0		$ 0