Summary of Significant Accounting Policies - Operating Leases (Details) |
1 Months Ended | |
|---|---|---|
Sep. 30, 2015 |
Jul. 31, 2015 |
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| Lease for Offices and Research facilities in Philadelphia, U.S. | ||
| Lease term (in years) | 15 years | |
| Early termination option (in months) | 123 months | |
| Lease for Research and development facility in Oxfordshire, U.K. | ||
| Lease term (in years) | 25 years | |
| X | ||||||||||
- Definition Represents the early termination option stated in the lease agreement. No definition available.
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| X | ||||||||||
- Definition 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. No definition available.
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| X | ||||||||||
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