Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Jul. 31, 2015
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 1	35.00%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 2	35.00%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 3	35.00%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 4	0.32%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 5	0.22%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 6	0.10%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 7	35.32%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 8	35.22%
Income Taxes Schedule Of Effective Income Tax Rate Reconciliation 9	35.10%