Summary of Significant Accounting Policies (Details 3) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Revenue Recognition on Product Sales
Milestone revenues recorded	$ 0	$ 0
Sales return period	12 months
Income Taxes
Net income (loss)	$ 917,000us-gaap_NetIncomeLoss	$ (15,543,000)us-gaap_NetIncomeLoss

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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