Stock Repurchases

12 Months Ended

Dec. 31, 2012

Stockholders' Equity Note [Abstract]

Stock Repurchases

Stock Repurchases:

In 2008, our Board of Directors approved a $300 million share repurchase plan, with no stated expiration date, authorizing the repurchase of shares of our common stock through open market purchases (the “2008 Share Repurchase Plan”). In December 2011, our Board of Directors increased the authorized amount of shares that could be repurchased under the 2008 Share Repurchase Plan by $100 million to $400 million. In 2012, we used $50.1 million to acquire 1.1 million shares of stock under this share repurchase plan, and as of December 31, 2012, $71.2 million of shares may yet be purchased.

In December 2012, our Board of Directors approved a $300 million share repurchase plan, with no stated expiration date, authorizing the repurchase of shares of our common stock through open market purchases (the "2012 Share Repurchase Plan"). As of December 31, 2012, no shares were repurchased under this plan.