Common Stock Repurchase Program	3 Months Ended
Dec. 31, 2013
Common Stock Repurchase Program [Abstract]
Common Stock Repurchase Program	Common Stock Repurchase Program In the three month period ended December 31, 2013, the Company did not repurchase any shares of its common stock in the open market. As of December 31, 2013, the Company had repurchased and retired an aggregate of 14,179,711 shares of common stock at a cost of approximately $88.5 million since September 2007. As of December 31, 2013, $19.8 million remained available under the Company's existing share repurchase authorization. The Company issues RSUs as part of its equity incentive plan. For a 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 three months ended December 31, 2013, the Company withheld 29,554 shares to satisfy approximately $0.3 million 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 month period ended December 31, 2013, the Company did not repurchase any shares of its common stock in the open market. As of December 31, 2013, the Company had repurchased and retired an aggregate of 14,179,711 shares of common stock at a cost of approximately $88.5 million since September 2007. As of December 31, 2013, $19.8 million remained available under the Company's existing share repurchase authorization.

The Company issues RSUs as part of its equity incentive plan. For a 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 three months ended December 31, 2013, the Company withheld 29,554 shares to satisfy approximately $0.3 million 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.