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NeuVaxTM Acquisition (Pro Forma Net Loss and Pro Forma Net Loss Per Common Share) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Business Combinations [Abstract]
Net loss from continuing operations	$ (4,700)
Net loss from discontinued operations	$ (8,078)
Net loss per common share, continuing operations	$ (0.12)
Net loss per common share, discontinued operations	$ (0.21)
Net loss per common share	$ (0.34)

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- Definition

Business Acquisition, Pro Forma Earnings Per Share, Basic and Diluted

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- Definition

Net loss per common share, discontinued operations.

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- Definition

Net loss from discontinued operations.

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 54

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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-Name Statement of Financial Accounting Standard (FAS)

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-Subparagraph r(2, 3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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-Section 50

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