Note 12 - Leases	9 Months Ended
Sep. 30, 2020
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	12. Leases Operating leases The Company has operating leases for real estate and non-real estate in the United States, United Kingdom, China, Japan, South Korea and Singapore. One such operating lease is a sublease for real estate. The Company does not have any material finance leases. In March 2020, the Company entered into a lease for new space in Marlborough, Massachusetts, which extends through November 2028 that will allow it to combine its laboratory and office space, currently located in Norwood, Massachusetts, with its U.S. corporate headquarters that is currently located in a separate location in Marlborough, Massachusetts, into a single facility. As of September 30, 2020, the property was not yet available for use by the Company and no right-of-use asset and corresponding lease liability were therefore recorded. The rent will commence on the earlier of the date on which the landlord delivers the property to the Company or the date on which the Company commences to operate its business in the property. The base rent on the facility over the remainder of the lease term will range from $30,000 per month to $38,000 per month. On June 1, 2020, the Company entered into a lease extension for its property at 94C Milton Park, Abingdon U.K. The lease has been extended by a maximum of two years from the original agreement. The lease may be terminated by the Company at any time, without penalty, with three months’ notice. Annual rent during the extension period is £128,490 for January 1, 2021 to December 31, 2021 and £256,980 for January 1, 2022 to December 31, 2022. The Company accounted for the extension as the modification of a lease and recorded an addition of £194,000 to its lease right-of-use assets and an addition of £175,000 to its lease liability. On July 2, 2020, the Company entered into a sub-lease extension for its property, comprising laboratory and office space, at 320 Norwood Park, South Norwood, Massachusetts. The sub-lease has been extended for 15 months until September 30, 2021 with annual rent of $213,000. The Company accounted for the extension as the modification of a lease and recorded an addition of $251,000 to its lease right-of-use assets and an addition of $234,000 to its lease liability.

Note 12 - Leases

9 Months Ended

Sep. 30, 2020

12. Leases

Operating leases

The Company has operating leases for real estate and non-real estate in the United States, United Kingdom, China, Japan, South Korea and Singapore. One such operating lease is a sublease for real estate. The Company does not have any material finance leases.

In March 2020, the Company entered into a lease for new space in Marlborough, Massachusetts, which extends through November 2028 that will allow it to combine its laboratory and office space, currently located in Norwood, Massachusetts, with its U.S. corporate headquarters that is currently located in a separate location in Marlborough, Massachusetts, into a single facility. As of September 30, 2020, the property was not yet available for use by the Company and no right-of-use asset and corresponding lease liability were therefore recorded. The rent will commence on the earlier of the date on which the landlord delivers the property to the Company or the date on which the Company commences to operate its business in the property. The base rent on the facility over the remainder of the lease term will range from $30,000 per month to $38,000 per month.

On June 1, 2020, the Company entered into a lease extension for its property at 94C Milton Park, Abingdon U.K. The lease has been extended by a maximum of two years from the original agreement. The lease may be terminated by the Company at any time, without penalty, with three months’ notice. Annual rent during the extension period is £128,490 for January 1, 2021 to December 31, 2021 and £256,980 for January 1, 2022 to December 31, 2022. The Company accounted for the extension as the modification of a lease and recorded an addition of £194,000 to its lease right-of-use assets and an addition of £175,000 to its lease liability.

On July 2, 2020, the Company entered into a sub-lease extension for its property, comprising laboratory and office space, at 320 Norwood Park, South Norwood, Massachusetts. The sub-lease has been extended for 15 months until September 30, 2021 with annual rent of $213,000. The Company accounted for the extension as the modification of a lease and recorded an addition of $251,000 to its lease right-of-use assets and an addition of $234,000 to its lease liability.