Accounting Records and Use of Estimates (Details Textual) (USD $)	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Deferred Tax Assets, Deferred Income	$ 143,000
Deferred Tax Liabilities, Tax Deferred Income	644,000
Deferred Tax Liabilities Unrealized Gains On Available For Sale Securities	29,000
Deferred Income Tax Expense (Benefit)	$ 3,000	$ (80,000)