Convertible Debt	9 Months Ended
Sep. 30, 2012
Convertible Debt [Abstract]
Convertible Debt	4. Convertible Debt On April 2, 2012, all noteholders validly tendered their 5.5% Senior Convertible Notes, or 2007 Notes, in response to the then-outstanding tender offer for the 2007 Notes, and the Company repurchased the remaining $34.9 million in principal amount of 2007 Notes outstanding for a total cash payment of $35.8 million, including accrued and unpaid interest. No further obligation remains outstanding for the 2007 Notes as of September 30, 2012.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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