Common Stock Repurchase Program	9 Months Ended
Jun. 30, 2011
Common Stock Repurchase Program [Abstract]
Common Stock Repurchase Program [Text Block]	Common Stock Repurchase Program In the three and nine month periods ended June 30, 2011, the Company did not repurchase any shares of its common stock in the open market. As of June 30, 2011, the Company had repurchased and retired an aggregate of 13,679,711 shares of common stock at a cost of approximately $84.5 million since September 2007. As of June 30, 2011, $23.8 million remained available under the existing share repurchase authorizations approved by the Company’s Board of Directors. The Company issues RSUs as part of its equity incentive plans. For a small portion of RSUs granted, the number of shares issued on the date the RSUs vest is net of the statutory withholding requirements that the Company pays on behalf of its employees. During the nine months ended June 30, 2011, the Company withheld 1,543 shares to satisfy approximately $18,000 of employee tax obligations. Although the shares withheld are not issued, they are treated as common stock repurchases for accounting purposes, as they reduce the number of shares that would have been issued upon vesting.

Common Stock Repurchase Program

In the three and nine month periods ended June 30, 2011, the Company did not repurchase any shares of its common stock in the open market. As of June 30, 2011, the Company had repurchased and retired an aggregate of 13,679,711 shares of common stock at a cost of approximately $84.5 million since September 2007. As of June 30, 2011, $23.8 million remained available under the existing share repurchase authorizations approved by the Company’s Board of Directors.

The Company issues RSUs as part of its equity incentive plans. For a small portion of RSUs granted, the number of shares issued on the date the RSUs vest is net of the statutory withholding requirements that the Company pays on behalf of its employees. During the nine months ended June 30, 2011, the Company withheld 1,543 shares to satisfy approximately $18,000 of employee tax obligations. Although the shares withheld are not issued, they are treated as common stock repurchases for accounting purposes, as they reduce the number of shares that would have been issued upon vesting.