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Use Of Estimates	3 Months Ended
Use Of Estimates	Nov. 30, 2011
Uses Of Estimates [Abstract]
Use Of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The most significant of the Company's estimates is the determination of revenue to recognize for the services the Company provides and the determination of the contractual allowance. See "Revenue Recognition" below for further discussion. Actual results could differ materially from those estimates used in the preparation of these financial statements.