Revolving Line of Credit (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Debt Disclosure [Line Items]
Line of Credit Facility, Interest Rate Description			advances under the credit line were secured with substantially all of the Company’s assets, were subject to interest at 1% above the Wall Street Journal prime rate index
Line of Credit Facility, Interest Rate Requirements, Current Ratio, Minimum			1.2 times
Line of Credit Facility, Interest Rate Requirements, Debt to Tangible Net Worth Ratio, Maximum			2.5 times
Line of Credit Facility, Quarterly EBITDA on Rolling Four Quarter Basis, Minimum (in dollars)			$ 30,000
Line of Credit Facility, Periodic Payment, Interest (in dollars)	$ 894	$ 1	$ 1,181	$ 2