Summary of Significant Accounting Policies - Common Stock Repurchases (Details Narrative) (USD $)		3 Months Ended				3 Months Ended
	Oct. 31, 2012	Jul. 31, 2011 StockRepurchaseMember	Jul. 31, 2012 StockRepurchaseMember	Apr. 10, 2012 StockRepurchaseMember	Dec. 04, 2002 StockRepurchaseMember	Jul. 31, 2012 Common Stock Repurchases
Number of shares to authorized to repurchase			1,000,000	828,000	500,000
Number of common shares repurchased	0		137,664
Cost to repurchase common stock						$ 142,262
Total number of shares authorized for purchase	818,436
Common stock repurchases, description						On December 4, 2002, the Company announced an open market repurchase plan providing for the repurchase of up to 500,000 shares of the Company's common stock. On April 10, 2012, the Company announced the additional authorization to repurchase up to 828,000 shares of the Company's common stock which at that time made the total available for purchase of up to 1,000,000 shares. In fiscal 2013's first quarter ended July 31, 2012, the Company repurchased 137,664 shares for a total cost of $142,262, versus nil in the prior year first quarter. As of July 31, 2012, the total number of shares authorized for purchase under the program is 818,436 shares.

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.