Share Repurchases (Notes)

9 Months Ended

Sep. 30, 2016

Share Repurchases [Abstract]

Schedule of Repurchase Agreements [Table Text Block]

On August 4, 2015, we announced that our board of directors authorized the repurchase of an indeterminate number of our shares of common stock in the open market at an aggregate market value of up to $100 million. We repurchased 1.3 million shares of our common stock for $24.3 million during 2015, and 1.6 million and 4.1 million shares of our common stock for $25.9 million and $75.7 million during the three and nine months ended September 30, 2016, respectively, which completed this program.

On August 4, 2016, we announced that our board of directors authorized the repurchase of an indeterminate number of our shares of common stock in the open market at an aggregate market value of up to $100 million over the next twenty-four months. As of November 2, 2016, we have not made any share repurchases under the August 4, 2016 share repurchase authorization.

Any shares purchased that were not part of our publicly announced plan are related to repurchases of common stock pursuant to the provisions of employee benefit plans that permit the repurchase of shares to satisfy statutory tax withholding obligations.