Notes Payable	12 Months Ended
Dec. 31, 2011
Debt Disclosure [Text Block]	(6) Notes Payable The 4% 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 an initial conversion price of $9.55 per share (104.712 shares per $1,000 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 five-trading-day period prior to the transaction constituting the fundamental change. The January 29, 2010 sale of the Company’s specialty pharmaceutical business constituted a fundamental change and triggered a requirement that the Company offer to purchase all of its 4% notes at face value. Such an offer was made on February 5, 2010. The offer expired on March 5, 2010 with no notes having been tendered. The fundamental change also triggered a change in the conversion rate from 104.712 shares per $1,000 principal amount of notes to 116.535 shares per $1,000 principal amount during the period January 29, 2010 to March 4, 2010. During this period, notes totaling $115.6 million principal amount were converted into approximately 13.5 million shares of common stock of the Company, reducing the outstanding principal balance of the notes outstanding to $134.5 million. Subsequent to March 4, 2010, the date the enhanced conversion period ended, the original conversion rate of 104.712 shares per $1,000 principal amount of notes is again in effect. During the fourth quarter of 2011, the Company repurchased $5.0 million principal amount of its 4% notes at par and wrote-off approximately $30,000 of deferred debt issuance costs. During the first quarter of 2009, the Company repurchased $20.5 million principal amount of its 4% notes at a discount to par, resulting in a gain of approximately $4.5 million, net of the write-off of $0.3 million of deferred debt issuance costs. As of December 31, 2011, the balance of unamortized deferred debt issuance costs is approximately $0.7 million. Interest on the 4% notes is payable on June 1 and December 1 of each year. Accrued interest on the 4% notes amounted to $0.4 million as of December 31, 2011 and 2010.

Notes Payable

12 Months Ended

Dec. 31, 2011

(6) Notes Payable

The 4% 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 an initial conversion price of $9.55 per share (104.712 shares per $1,000 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 five-trading-day period prior to the transaction constituting the fundamental change. The January 29, 2010 sale of the Company’s specialty pharmaceutical business constituted a fundamental change and triggered a requirement that the Company offer to purchase all of its 4% notes at face value. Such an offer was made on February 5, 2010. The offer expired on March 5, 2010 with no notes having been tendered. The fundamental change also triggered a change in the conversion rate from 104.712 shares per $1,000 principal amount of notes to 116.535 shares per $1,000 principal amount during the period January 29, 2010 to March 4, 2010. During this period, notes totaling $115.6 million principal amount were converted into approximately 13.5 million shares of common stock of the Company, reducing the outstanding principal balance of the notes outstanding to $134.5 million. Subsequent to March 4, 2010, the date the enhanced conversion period ended, the original conversion rate of 104.712 shares per $1,000 principal amount of notes is again in effect.

During the fourth quarter of 2011, the Company repurchased $5.0 million principal amount of its 4% notes at par and wrote-off approximately $30,000 of deferred debt issuance costs. During the first quarter of 2009, the Company repurchased $20.5 million principal amount of its 4% notes at a discount to par, resulting in a gain of approximately $4.5 million, net of the write-off of $0.3 million of deferred debt issuance costs. As of December 31, 2011, the balance of unamortized deferred debt issuance costs is approximately $0.7 million.

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