Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Accumulated Other Comprehensive Income: [Abstract]
Beginning balance, net of tax effect	$ 129,412	$ 183,633
Other comprehensive income, net of tax effect:
Unrealized gains on available-for-sale securities	75,162	20,269
Tax effect	(33,000)	(9,000)
Unrealized gains on available-for-sale securities, net of tax effect	42,162	11,269
Amounts reclassified from accumulated other comprehensive income, net of tax effect:
Unrealized gains (losses) on available-for-sale securities reclassified		(155,187)
Tax effect	0	69,000
Amounts reclassified, net of tax effect		(86,187)
Ending balance, net of tax effect	$ 171,574	$ 108,715