Notes Payable	3 Months Ended
Jun. 30, 2011
Debt Disclosure [Text Block]	(5) Notes Payable The 4% convertible senior notes mature on June 1, 2013 unless earlier redeemed, repurchased or converted. The 4% notes are senior unsecured obligations and rank equal to all future senior unsecured debt of the Company. The 4% notes are convertible at the option of the holders into the Company’s common stock at a conversion price of $9.55 per share (104.712 shares per $1,000 of principal amount). If the closing price of the Company’s common stock for at least 20 trading days in the 30-consecutive-trading-day period ending on the date one day prior to the date of a notice of redemption is greater than 140 percent of the applicable conversion price on the date of such notice, the Company, at its option, may redeem the 4% notes in whole or in part, at a redemption price in cash equal to 100 percent of the principal amount of the 4% notes to be redeemed, plus accrued and unpaid interest, if any, to the redemption date. Upon occurrence of a “fundamental change,” as defined in the indenture governing the 4% notes, holders of the notes may require the Company to redeem the notes at a price equal to 100 percent of the principal amount plus accrued and unpaid interest or, in certain cases, to convert the notes at an increased conversion rate based on the price paid per share of the Company’s common stock in the transaction constituting the fundamental change. During the first quarter of 2010, notes totaling $115.6 million principal amount were converted into approximately 13.5 million shares of the Company’s common stock, reducing the outstanding principal balance of the notes outstanding to $134.5 million. The net effect of forgone interest and the write-off of deferred debt issuance costs amounted to $0.8 million and was charged to interest expense during the first quarter of 2010 at the time of the notes conversion. The $0.8 million was adjusted in the fourth quarter of 2010 to credit interest expense and charge additional paid-in capital to reflect the capital nature of the transaction. The noncash adjustment was not material to the first or fourth quarters nor to the full year 2010 results of operations. Interest on the 4% notes is payable on June 1 and December 1 of each year. Accrued interest amounted to $0.4 million as of June 30, 2011 and December 31, 2010.

Notes Payable

3 Months Ended

Jun. 30, 2011

(5) Notes Payable

The 4% convertible senior notes mature on June 1, 2013 unless earlier redeemed, repurchased or converted. The 4% notes are senior unsecured obligations and rank equal to all future senior unsecured debt of the Company. The 4% notes are convertible at the option of the holders into the Company’s common stock at a conversion price of $9.55 per share (104.712 shares per $1,000 of principal amount). If the closing price of the Company’s common stock for at least 20 trading days in the 30-consecutive-trading-day period ending on the date one day prior to the date of a notice of redemption is greater than 140 percent of the applicable conversion price on the date of such notice, the Company, at its option, may redeem the 4% notes in whole or in part, at a redemption price in cash equal to 100 percent of the principal amount of the 4% notes to be redeemed, plus accrued and unpaid interest, if any, to the redemption date. Upon occurrence of a “fundamental change,” as defined in the indenture governing the 4% notes, holders of the notes may require the Company to redeem the notes at a price equal to 100 percent of the principal amount plus accrued and unpaid interest or, in certain cases, to convert the notes at an increased conversion rate based on the price paid per share of the Company’s common stock in the transaction constituting the fundamental change.

During the first quarter of 2010, notes totaling $115.6 million principal amount were converted into approximately 13.5 million shares of the Company’s common stock, reducing the outstanding principal balance of the notes outstanding to $134.5 million. The net effect of forgone interest and the write-off of deferred debt issuance costs amounted to $0.8 million and was charged to interest expense during the first quarter of 2010 at the time of the notes conversion. The $0.8 million was adjusted in the fourth quarter of 2010 to credit interest expense and charge additional paid-in capital to reflect the capital nature of the transaction. The noncash adjustment was not material to the first or fourth quarters nor to the full year 2010 results of operations.

Interest on the 4% notes is payable on June 1 and December 1 of each year. Accrued interest amounted to $0.4 million as of June 30, 2011 and December 31, 2010.

- 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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