Recent Accounting Standards.	3 Months Ended
Recent Accounting Standards.	Oct. 31, 2011
Recent Accounting Standards. [Abstract]
Recent Accounting Standards.	(2) Recent Accounting Standards. The Company has considered all recently issued accounting standards updates and SEC rules and interpretive releases. In June 2011, the Financial Accounting Standards Board issued updated accounting guidance that requires the total of comprehensive income, the components of net income and the components of other comprehensive income to be presented in either a single continuous statement of comprehensive income or in two separate but consecutive statements. This update eliminates the option to present the components of other comprehensive income as part of the statement of changes in stockholders’ equity. In the two-statement approach, the first statement should present total net income and its components in the statement of net income followed consecutively by a second statement of other comprehensive income that should present total other comprehensive income, the components of other comprehensive income, and a total comprehensive income. The updated guidance does not change the items that must be reported in comprehensive income. This updated guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011, and should be applied retrospectively. Early adoption is permitted. The Company adopted the updated guidance on August 1, 2011, which did not have a material impact on its consolidated financial statements.

The entire disclosure for reporting accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections reported in the Company's financial statements for the period.

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