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Subsequent Events (Details) (USD $) In Millions, except Share data, unless otherwise specified | 9 Months Ended |  | 0 Months Ended
--- | --- | --- | ---
Sep. 30, 2012 | Mar. 09, 2012 | Oct. 29, 2012 Subsequent Event [Member] October 2012 Underwritten Offering [Member]
Subsequent Event [Line Items] |  |  |
Underwritten public offering shares of common stock (in shares) | 29,669,154 |  | 13,333,333
Public offering price (in dollars per share) | $ 1.76 | $ 1.32 | $ 3
Option period granted to underwriters |  |  | 30 days
Option granted to underwriters to purchase additional shares under the public offering (in shares) |  |  | 1,999,999
Total gross proceeds from offering | $ 39.2 |  | $ 40.0
Underwriting discounts commissions and estimated offering expenses | $ 3.0 |  | $ 3.1

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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 + Details
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- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section H + Details
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