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Net Earnings Per Share (Narrative) (Details)	3 Months Ended		9 Months Ended
Net Earnings Per Share (Narrative) (Details)	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Net Earnings Per Share [Abstract]
Options excluded from the diluted net earnings per share calculation	855,242	29,800	877,802	80,486

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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