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CONVERTIBLE NOTES PAYABLE	9 Months Ended
	Sep. 30, 2011
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	CONVERTIBLE NOTES PAYABLE In December 2006 and January 2007, the Company issued $115.0 million of convertible notes with a fixed interest rate of 3.75% due 2026 (the “Convertible Notes”). The Convertible Notes were issued at par and require interest payments semi-annually in arrears on June 15th and December 15th of each year. The Convertible Notes are unsecured obligations and rank equally with all other unsecured and unsubordinated indebtedness. The Convertible Notes have an effective interest rate of 6.03% after giving effect to the accounting treatment required by ASC Topic 470-20 “Debt with Conversion and Other Options.” Holders of the Convertible Notes may require the Company to repurchase the Convertible Notes at par on December 20, 2011, December 15, 2016 and December 15, 2021. The Company determined that the Convertible Notes will mature on December 20, 2011. The carrying amount of the equity component included in additional paid-in capital totaled $0.1 million at September 30, 2011 and $1.1 million at December 31, 2010. The additional non-cash interest expense recognized in the Consolidated Statements of Income was $0.2 million and $0.3 million for the three months ended September 30, 2011 and 2010, respectively, and $0.7 million and $0.8 million for the nine months ended September 30, 2011 and 2010, respectively. The if-converted value of the Convertible Notes does not exceed their aggregate principal amount as of September 30, 2011 and there are no derivative transactions that were entered into in connection with the issuance of the Convertible Notes. During 2011, the Company purchased $24.8 million in face amount of its Convertible Notes for $25.0 million and recognized a loss on debt extinguishment of $0.3 million. Through September 30, 2011, the Company has purchased $90.1 million in face amount of its Convertible Notes at an average discount of approximately 14%. The outstanding Convertible Notes face amount as of September 30, 2011 was $24.9 million.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20,22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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