Earnings (Loss) Per Share (Details Textual) (Ten Percent Convertible Senior Notes due Two Thousand Eighteen [Member], USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Earnings (Loss) Per Share [Line Items]
Potential conversion of convertible senior notes	$ 400
Interest rate of convertible senior notes	10.00%	10.00%
Initial conversion price of 10% convertible senior notes not included in the computation of diluted loss per share	$ 11.40
Convertible Debt Securities [Member]
Earnings (Loss) Per Share [Line Items]
Shares issuable upon conversion of convertible senior notes not included in computation of diluted loss per share	35.1

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Shares issuable upon conversion of convertible senior notes not included in computation of diluted loss per share

+ References

No definition available.

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

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- Definition

Face (par) amount of debt instrument at time of issuance.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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