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Subsequent Events	6 Months Ended
	Feb. 28, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 14. Subsequent Events  On March 21, 2017, the Company’s Board of Directors declared a cash dividend of $0.49 per share payable on April 28, 2017 to shareholders of record on April 14, 2017.  Effective as of March 9, 2017, the Company became obligated to incur certain costs under a contract for the construction of improvements to the Company’s new office building located at 9715 Businesspark Avenue, San Diego, California (the “Property”). The Company and Back’s Construction, Inc. (the “Contractor”) entered into a Standard Form of Agreement between Owner and Contractor dated as of February 23, 2017 (the “Agreement”) for the construction of the improvements to the Property (the “Project”). On March 9, 2017, the Company and the Contractor executed Change Order #1 to the Agreement to finalize a cost summary exhibit and to establish the maximum price for the Project in the amount of $4.2 million.  The Project is scheduled to be completed no later than July 14, 2017. 

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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