Acquisition of Isconova AB (Unaudited Pro Forma Financial Information of Operations) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Acquisition Of Isconova AB [Abstract]
Revenue	$ 4,869	$ 6,272	$ 14,195	$ 19,530
Net loss	$ (15,687)	$ (8,490)	$ (40,565)	$ (25,033)
Basic and diluted net loss per share	$ (0.09)	$ (0.06)	$ (0.24)	$ (0.18)

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

No definition available.

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- Definition

The pro forma net Income or Loss for the 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 Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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