Capital Stock	12 Months Ended
Dec. 31, 2013
Equity [Abstract]
Capital Stock	Capital Stock Pursuant to our shareholder rights plan, each share of common stock outstanding is coupled with one-quarter of a preferred stock purchase right (Right). Each Right entitles our shareholders to purchase, under certain conditions, one one-hundredth of a share of newly issued Series A Junior Participating Preferred Stock at an exercise price of $100. Rights will be exercisable only if someone acquires beneficial ownership of 20 percent or more of our common shares or commences a tender or exchange offer, upon consummation of which they would beneficially own 20 percent or more of our common shares. We will generally be entitled to redeem the Rights at $0.001 per Right at any time until the 10th business day following public announcement that a 20 percent position has been acquired. The Rights will expire on December 11, 2017. Please read Note 7 — Debt and Note 10 — Net Income per Share for information about shares of common stock that could be issued under our 3.75% convertible senior notes due 2020 and our 6.00% tangible equity units. Please read Note 16 — Share-Based Compensation for information about additional shares of common stock that could be issued under terms of our share-based compensation plans. At year-end 2013, personnel of former affiliates held options to purchase 779,000 shares of our common stock. The options have a weighted average exercise price of $25.11 and a weighted average remaining contractual term of two years. At year-end 2013, the options have an aggregate intrinsic value of $711,000. In 2013, we did not repurchase shares of our common stock. In 2012, we repurchased 94,450 shares of our common stock for $1,409,000. We have repurchased 2,002,145 shares of our common stock for $29,564,000 since we announced our 2009 strategic initiative of repurchasing up to 20 percent or 7,000,000 shares of our common stock.

Capital Stock

Pursuant to our shareholder rights plan, each share of common stock outstanding is coupled with one-quarter of a preferred stock purchase right (Right). Each Right entitles our shareholders to purchase, under certain conditions, one one-hundredth of a share of newly issued Series A Junior Participating Preferred Stock at an exercise price of $100. Rights will be exercisable only if someone acquires beneficial ownership of 20 percent or more of our common shares or commences a tender or exchange offer, upon consummation of which they would beneficially own 20 percent or more of our common shares. We will generally be entitled to redeem the Rights at $0.001 per Right at any time until the 10th business day following public announcement that a 20 percent position has been acquired. The Rights will expire on December 11, 2017.

Please read Note 7 — Debt and Note 10 — Net Income per Share for information about shares of common stock that could be issued under our 3.75% convertible senior notes due 2020 and our 6.00% tangible equity units.

Please read Note 16 — Share-Based Compensation for information about additional shares of common stock that could be issued under terms of our share-based compensation plans.

At year-end 2013, personnel of former affiliates held options to purchase 779,000 shares of our common stock. The options have a weighted average exercise price of $25.11 and a weighted average remaining contractual term of two years. At year-end 2013, the options have an aggregate intrinsic value of $711,000.

In 2013, we did not repurchase shares of our common stock. In 2012, we repurchased 94,450 shares of our common stock for $1,409,000. We have repurchased 2,002,145 shares of our common stock for $29,564,000 since we announced our 2009 strategic initiative of repurchasing up to 20 percent or 7,000,000 shares of our common stock.