Debt	6 Months Ended
Jun. 30, 2011
Debt Disclosure [Abstract]
Debt	Debt The Company's debt agreements contain financial covenants that require the maintenance of interest coverage and leverage ratios. The Company is in compliance with its debt covenants as of June 30, 2011, and closely monitors its future compliance based on current and anticipated future economic conditions. Effective April 5, 2011, the Company exercised its right to redeem the remaining $92,500 principal amount of the 3.75% Convertible Notes under their indenture agreement. Of the total $92,500 principal amount, $11,865 of these notes were redeemed with accrued interest through the redemption date. The remaining $80,635 of these notes were surrendered for conversion. The Company elected to pay cash to holders of the notes surrendered for conversion, including the value of any residual shares of common stock that were payable to the holders electing to convert their notes into an equivalent share value, resulting in a total cash payment of $90,438 including a premium on conversion of $9,803 which reduced the equity component by $6,085, net of tax of $3,718. As a result of this transaction, the Company recaptured $40,217 of previously deducted contingent convertible debt interest which resulted in a $15,252 reduction in short-term deferred tax liabilities as well as a reduction of tax loss carryforwards reflected in long-term deferred tax assets. The Company used borrowings under its senior credit facility to finance the redemption of the 3.75% Convertible Notes. The 3.375% Convertible Notes are subject to redemption at their par value at any time, at the option of the Company, on or after March 20, 2014. The note holders may also require the Company to redeem some or all of the notes at their par value on March 15^th of 2014, 2017 and 2022. The 3.375% Convertible Notes are also eligible for conversion upon meeting certain conditions as provided in the indenture agreement. The eligibility for conversion is determined quarterly. During the second quarter of 2011, the 3.375% Convertible Notes were not eligible for conversion. During the third quarter of 2011, the 3.375% Convertible Notes will not be eligible for conversion.

Debt

6 Months Ended

Jun. 30, 2011

The Company's debt agreements contain financial covenants that require the maintenance of interest coverage and leverage ratios. The Company is in compliance with its debt covenants as of June 30, 2011, and closely monitors its future compliance based on current and anticipated future economic conditions.

Effective April 5, 2011, the Company exercised its right to redeem the remaining $92,500 principal amount of the 3.75% Convertible Notes under their indenture agreement. Of the total $92,500 principal amount, $11,865 of these notes were redeemed with accrued interest through the redemption date. The remaining $80,635 of these notes were surrendered for conversion. The Company elected to pay cash to holders of the notes surrendered for conversion, including the value of any residual shares of common stock that were payable to the holders electing to convert their notes into an equivalent share value, resulting in a total cash payment of $90,438 including a premium on conversion of $9,803 which reduced the equity component by $6,085, net of tax of $3,718. As a result of this transaction, the Company recaptured $40,217 of previously deducted contingent convertible debt interest which resulted in a $15,252 reduction in short-term deferred tax liabilities as well as a reduction of tax loss carryforwards reflected in long-term deferred tax assets. The Company used borrowings under its senior credit facility to finance the redemption of the 3.75% Convertible Notes.

The 3.375% Convertible Notes are subject to redemption at their par value at any time, at the option of the Company, on or after March 20, 2014. The note holders may also require the Company to redeem some or all of the notes at their par value on March 15^th of 2014, 2017 and 2022. The 3.375% Convertible Notes are also eligible for conversion upon meeting certain conditions as provided in the indenture agreement. The eligibility for conversion is determined quarterly. During the second quarter of 2011, the 3.375% Convertible Notes were not eligible for conversion. During the third quarter of 2011, the 3.375% Convertible Notes will not be eligible for conversion.