Debt

Senior Notes

In September 2011 we repaid our $77.4 million, 5.625% Senior Notes that came due. At December 31, 2011 we had outstanding $171 million, 5.375% Senior Notes due in November 2015. During 2011 we repurchased $129 million in par value of our 5.375% Senior Notes due in November 2015. We recognized a gain on the repurchases of approximately $27.7 million, which is included in other revenue on the Consolidated Statements of Operations for the year ended December 31, 2011. At December 31, 2010 we had outstanding $77.4 million, 5.625% Senior Notes due in September 2011 and $300 million, 5.375% Senior Notes due in November 2015. Covenants in the Senior Notes include the requirement that there be no liens on the stock of the designated subsidiaries unless the Senior Notes are equally and ratably secured; that there be no disposition of the stock of designated subsidiaries unless all of the stock is disposed of for consideration equal to the fair market value of the stock; and that we and the designated subsidiaries preserve our corporate existence, rights and franchises unless we or any such subsidiary determines that such preservation is no longer necessary in the conduct of its business and that the loss thereof is not disadvantageous to the Senior Notes. A designated subsidiary is any of our consolidated subsidiaries which has shareholders' equity of at least 15% of our consolidated shareholders' equity. We were in compliance with all covenants at December 31, 2011.

If we fail to meet any of the covenants of the Senior Notes discussed above; there is a failure to pay when due at maturity, or a default results in the acceleration of maturity of, any of our other debt in an aggregate amount of $40 million or more; or we fail to make a payment of principal on the Senior Notes when due or a payment of interest on the Senior Notes within thirty days after due and we are not successful in obtaining an agreement from holders of a majority of the Senior Notes to change (or waive) the applicable requirement or payment default, then the holders of 25% or more of our Senior Notes would have the right to accelerate the maturity of those notes. In addition, the trustee, U.S. Bank National Association, of the Senior Notes could, independent of any action by holders of Senior Notes, accelerate the maturity of the Senior Notes.

At December 31, 2011 and 2010, the fair value of the amount outstanding under our Senior Notes was $116.7 million and $355.6 million, respectively. The fair value was determined using publicly available trade information.

Interest payments on the Senior Notes were $19.3 million, $20.5 million and $25.8 million for the years ended December 31, 2011, 2010, and 2009, respectively.

Convertible Senior Notes

At December 31, 2011 and 2010 we had outstanding $345 million principal amount of 5% Convertible Senior Notes due in 2017. Interest on the Convertible Senior Notes is payable semi-annually in arrears on May 1 and November 1 of each year. We do not have the right to defer interest payments on the Convertible Senior Notes. The Convertible Senior Notes will mature on May 1, 2017, unless earlier converted by the holders or repurchased by us. Covenants in the Convertible Senior Notes include a requirement to notify holders in advance of certain events and that we and the designated subsidiaries (defined above) preserve our corporate existence, rights and franchises unless we or any such subsidiary determines that such preservation is no longer necessary in the conduct of its business and that the loss thereof is not disadvantageous to the Convertible Senior Notes.

If we fail to meet any of the covenants of the Convertible Senior Notes; there is a failure to pay when due at maturity, or a default results in the acceleration of maturity of, any of our other debt in an aggregate amount of $40 million or more; a final judgment for the payment of $40 million or more (excluding any amounts covered by insurance) is rendered against us or any of our subsidiaries which judgment is not discharged or stayed within certain time limits; or we fail to make a payment of principal on the Convertible Senior Notes when due or a payment of interest on the Convertible Senior Notes within thirty days after due and we are not successful in obtaining an agreement from holders of a majority of the Convertible Senior Notes to change (or waive) the applicable requirement or payment default, then the holders of 25% or more of the Convertible Senior Notes would have the right to accelerate the maturity of those notes. In addition, the trustee of the Convertible Senior Notes could, independent of any action by holders, accelerate the maturity of the Convertible Senior Notes.

The Convertible Senior Notes are convertible, at the holder's option, at an initial conversion rate, which is subject to adjustment, of 74.4186 shares per $1,000 principal amount at any time prior to the maturity date. This represents an initial conversion price of approximately $13.44 per share. These Convertible Senior Notes will be equal in right of payment to our existing Senior Notes, discussed above, and will be senior in right of payment to our existing Convertible Junior Debentures, discussed below. Debt issuance costs are being amortized to interest expense over the contractual life of the Convertible Senior Notes. The provisions of the Convertible Senior Notes are complex. The description above is not intended to be complete in all respects. Moreover, that description is qualified in its entirety by the terms of the notes, which are contained in the Supplemental Indenture, dated as of April 26, 2010, between us and U.S. Bank National Association, as trustee, and the Indenture dated as of October 15, 2000, between us and the trustee.

At December 31, 2011 and 2010, the fair value of the amount outstanding under our Convertible Senior Notes was $202.3 million and $400.5 million, respectively. The fair value was determined using publicly available trade information.

Interest payments on the Convertible Senior Notes were $17.3 million and $8.9 million for the year ended December 31, 2011 and 2010, respectively.

Convertible Junior Subordinated Debentures

At December 31, 2011 and 2010 we had outstanding $389.5 million principal amount of 9% Convertible Junior Subordinated Debentures due in 2063 (the “debentures”). The debentures have an effective interest rate of 19% that reflects our non-convertible debt borrowing rate at the time of issuance. At December 31, 2011 and 2010 the amortized value of the principal amount of the debentures is reflected as a liability on our consolidated balance sheet of $344.4 million and $315.6 million, respectively, with the unamortized discount reflected in equity. The debentures rank junior to all of our existing and future senior indebtedness.

Interest on the debentures is payable semi-annually in arrears on April 1 and October 1 of each year. As long as no event of default with respect to the debentures has occurred and is continuing, we may defer interest, under an optional deferral provision, for one or more consecutive interest periods up to ten years without giving rise to an event of default. Deferred interest will accrue additional interest at the rate then applicable to the debentures. During an optional deferral period we may not pay or declare dividends on our common stock. Violations of the covenants under the Indenture governing the debentures, including covenants to provide certain documents to the trustee, are not events of default under the Indenture and would not allow the acceleration of amounts that we owe under the debentures. Similarly, events of default under, or acceleration of, any of our other obligations, including those described above, would not allow the acceleration of amounts that we owe under the debentures. However, violations of the events of default under the Indenture, including a failure to pay principal when due under the debentures and certain events of bankruptcy, insolvency or receivership involving our holding company would allow acceleration of amounts that we owe under the debentures.

Interest on the debentures that would have been payable on the scheduled interest payment dates of April 1, 2009, October 1, 2009 and April 1, 2010 had been deferred past the scheduled payment date. During this deferral period the deferred interest continued to accrue and compound semi-annually at an annual rate of 9%.

On October 1, 2010 we paid each of those deferred interest payments, including the compound interest on each. The interest payments, totaling approximately $57.5 million, were made from the net proceeds of our April 2010 common stock offering. We have remained current on these interest payments since October 1, 2010. We continue to have the right to defer interest that is payable on subsequent scheduled interest payment dates if we give the required 15 day notice. Any deferral of such interest would be on terms equivalent to those described above.

When interest on the debentures is deferred, we are required, not later than a specified time, to use reasonable commercial efforts to begin selling qualifying securities to persons who are not our affiliates. The specified time is one business day after we pay interest on the debentures that was not deferred, or if earlier, the fifth anniversary of the scheduled interest payment date on which the deferral started. Qualifying securities are common stock, certain warrants and certain non-cumulative perpetual preferred stock. The requirement to use such efforts to sell such securities is called the Alternative Payment Mechanism.

The net proceeds of Alternative Payment Mechanism sales are to be applied to the payment of deferred interest, including the compound portion. We cannot pay deferred interest other than from the net proceeds of Alternative Payment Mechanism sales, except at the final maturity of the debentures or at the tenth anniversary of the start of the interest deferral. The Alternative Payment Mechanism does not require us to sell common stock or warrants before the fifth anniversary of the interest payment date on which that deferral started if the net proceeds (counting any net proceeds of those securities previously sold under the Alternative Payment Mechanism) would exceed the 2% cap. The 2% cap is 2% of the average closing price of our common stock times the number of our outstanding shares of common stock. The average price is determined over a specified period ending before the issuance of the common stock or warrants being sold, and the number of outstanding shares is determined as of the date of our most recent publicly released financial statements.

We are not required to issue under the Alternative Payment Mechanism a total of more than 10 million shares of common stock, including shares underlying qualifying warrants. In addition, we may not issue under the Alternative Payment Mechanism qualifying preferred stock if the total net proceeds of all issuances would exceed 25% of the aggregate principal amount of the debentures.

The Alternative Payment Mechanism does not apply during any period between scheduled interest payment dates if there is a “market disruption event” that occurs over a specified portion of such period. Market disruption events include any material adverse change in domestic or international economic or financial conditions.

The provisions of the Alternative Payment Mechanism are complex. The description above is not intended to be complete in all respects. Moreover, that description is qualified in its entirety by the terms of the debentures, which are contained in the Indenture, dated as of March 28, 2008, between us and U.S. Bank National Association, as trustee.

We may redeem the debentures prior to April 6, 2013, in whole but not in part, only in the event of a specified tax or rating agency event, as defined in the Indenture. In any such event, the redemption price will be equal to the greater of (1) 100% of the principal amount of the debentures being redeemed and (2) the applicable make-whole amount, as defined in the Indenture, in each case plus any accrued but unpaid interest. On or after April 6, 2013, we may redeem the debentures in whole or in part from time to time, at our option, at a redemption price equal to 100% of the principal amount of the debentures being redeemed, plus any accrued and unpaid interest, if the closing sale price of our common stock exceeds 130% of the then prevailing conversion price of the debentures for at least 20 of the 30 trading days preceding notice of the redemption. We will not be able to redeem the debentures, other than in the event of a specified tax event or rating agency event, during an optional deferral period.

The debentures are currently convertible, at the holder's option, at an initial conversion rate, which is subject to adjustment, of 74.0741 common shares per $1,000 principal amount of debentures at any time prior to the maturity date. This represents an initial conversion price of approximately $13.50 per share. If a holder elects to convert their debentures, deferred interest owed on the debentures being converted is also converted into shares of our common stock. The conversion rate for any deferred interest is based on the average price that our shares traded at during a 5-day period immediately prior to the election to convert. In lieu of issuing shares of common stock upon conversion of the debentures occurring after April 6, 2013, we may, at our option, make a cash payment to converting holders equal to the value of all or some of the shares of our common stock otherwise issuable upon conversion.

The fair value of the debentures was approximately $189.6 million and $432.4 million, respectively, at December 31, 2011 and 2010, as determined using available pricing for these debentures or similar instruments.

Interest payments on the debentures were $35.1 million and $75.0 million for the years ended December 31, 2011 and 2010, respectively. There were no interest payments made on the debentures in 2009 as we were in a deferral period that ended October 1, 2010 as discussed above.

Other debt

In June 2009, we repaid the $200 million that was then outstanding under our bank revolving credit facility and terminated the facility. Interest payments related to that facility were $6.4 million for the year ended December 31, 2009.