The day, month and year (YYYY-MM-DD) that the declaration of a dividend to be paid is announced.

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- Definition

Declaration of date(s) as of when a holder must own the stock to be entitled to the dividend. The ex-dividend date is generally 3 days before the record date.

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For declared dividends, day, month, and year (YYYY-MM-DD) that the dividend declared as of or prior to the financial reporting date will be paid in the subsequent period.

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- Definition

Principal amount of convertible notes.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

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- Definition

The ratio applied to the debt for purposes of determining the number of shares of the equity security into which the debt will be converted.

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-Glossary Conversion Rate

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The contractual amount of dividends (or interest on participating income bonds) that must be paid for the current period (for example, unpaid cumulative dividends).

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The aggregate amount of dividends declared, but not paid, as of the financial reporting date.

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Cash Dividends (Details) (USD $)	3 Months Ended				9 Months Ended
Cash Dividends (Details) (USD $)	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Feb. 25, 2011	Sep. 30, 2011 Due February 2015 [Member]	Sep. 30, 2011 Due May 2015 [Member]
Cash Dividends [Abstract]
Cash dividends, declaration date				Feb. 25, 2011
Quarterly dividend per share (in dollars per share)				$ 0.15
Quarterly dividend, date of record				March 8, June 8, September 8 and December 8 of 2011
Quarterly dividend, payable date				March 15, June 15, September 15 and December 15 of 2011
Dividend payments	$ 21,000,000	$ 21,000,000	$ 21,000,000
Dividends accrued for last quarter of 2011	21,000,000
Debt Instrument [Line Items]
Adjusted conversion ratio for 2015 Notes (in shares)					151.713	132.6682
Principal amount of convertible notes					$ 1,000	$ 1,000
Conversion price of convertible notes (in dollars per share)					$ 6.59	$ 7.54