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Commitments and Contingencies (Details 2) - Mar. 31, 2015 - ft²	Total
Office and research facility operating lease, as amended
Lease
Square of feet of space	19,335
Term of lease extension option	5 years
Amendment to office and research facility operating lease
Lease
Square of feet of space	9,660
Delivery of expansion space with substantial completion of certain improvements | Office and research facility operating lease, as amended
Lease
Lease term	5 years

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Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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