Stockholders' Equity (Details) - Schedule of share-based compensation expense (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]
Stock Based Compensation Expense	$ 103	$ 142
Options [Member]
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]
Stock Based Compensation Expense	47
Restricted Stocks [Member]
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]
Stock Based Compensation Expense	$ 56	$ 142