Summary of Significant Accounting Policies Segment Information and Signficant Customers (Details)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue, Major Customer
Entity Wide Revenue Sanofi Percentage	98.00%
Entity Wide Revenue Ipsen Percentage		94.00%
Entity-Wide Revenue, McNair Medical Institute, Percentage			57.00%
Entity-Wide Revenue, Taconic Farms, Percentage			33.00%

Percentage of revenue generated from Ipsen Pharma SAS that accounts for 10 percent or more of an entity's revenues.

No definition available.

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- Definition

Percentage of revenue generated from McNair Medical Institute, LLC that accounts for 10 percent or more of an entity’s revenues.

+ References

No definition available.

+ Details

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- Definition

Percentage of revenue generated from Sanofi that accounts for 10 percent or more of an entity's revenues.

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No definition available.

+ Details

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- Definition

Percentage of revenue generated from Taconic Farms, Inc. that accounts for 10 percent or more of an entity’s revenues.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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