Property and equipment (Details) - USD ($) $ in Thousands | 12 Months Ended |
Dec. 31, 2023 | Dec. 31, 2022 |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | $ 12,496 | |
Property, plant and equipment at end of period | 10,856 | $ 12,496 |
Cost | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 30,927 | 32,506 |
Additions / Depreciation charge for the year | 3,109 | 128 |
Disposals | (3,877) | |
Net exchange differences | 842 | (1,707) |
Property, plant and equipment at end of period | 31,001 | 30,927 |
Accumulated depreciation | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | (18,431) | (16,027) |
Additions / Depreciation charge for the year | (2,843) | (3,355) |
Disposals | 1,775 | |
Net exchange differences | (646) | 951 |
Property, plant and equipment at end of period | (20,145) | (18,431) |
Artwork | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 7,089 | |
Property, plant and equipment at end of period | 7,259 | 7,089 |
Artwork | Cost | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 7,089 | 7,573 |
Additions / Depreciation charge for the year | 0 | 0 |
Disposals | 0 | |
Net exchange differences | 170 | (484) |
Property, plant and equipment at end of period | 7,259 | 7,089 |
Artwork | Accumulated depreciation | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 0 | 0 |
Additions / Depreciation charge for the year | 0 | 0 |
Disposals | 0 | |
Net exchange differences | 0 | 0 |
Property, plant and equipment at end of period | 0 | 0 |
Furniture and fixtures | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 310 | |
Property, plant and equipment at end of period | 284 | 310 |
Furniture and fixtures | Cost | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 2,823 | 2,981 |
Additions / Depreciation charge for the year | 154 | 2 |
Disposals | (591) | |
Net exchange differences | 404 | (160) |
Property, plant and equipment at end of period | 2,790 | 2,823 |
Furniture and fixtures | Accumulated depreciation | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | (2,513) | (2,579) |
Additions / Depreciation charge for the year | (141) | (98) |
Disposals | 399 | |
Net exchange differences | (251) | 164 |
Property, plant and equipment at end of period | (2,506) | (2,513) |
Computer hardware and software | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 180 | |
Property, plant and equipment at end of period | 271 | 180 |
Computer hardware and software | Cost | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 3,002 | 3,036 |
Additions / Depreciation charge for the year | 224 | 126 |
Disposals | (189) | |
Net exchange differences | 59 | (160) |
Property, plant and equipment at end of period | 3,096 | 3,002 |
Computer hardware and software | Accumulated depreciation | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | (2,822) | (2,882) |
Additions / Depreciation charge for the year | (68) | (93) |
Disposals | 181 | |
Net exchange differences | (116) | 153 |
Property, plant and equipment at end of period | (2,825) | (2,822) |
Leasehold improvements | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 840 | |
Property, plant and equipment at end of period | 1,253 | 840 |
Leasehold improvements | Cost | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 5,654 | 6,026 |
Additions / Depreciation charge for the year | 1,157 | 0 |
Disposals | (413) | |
Net exchange differences | 123 | (372) |
Property, plant and equipment at end of period | 6,521 | 5,654 |
Leasehold improvements | Accumulated depreciation | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | (4,814) | (4,570) |
Additions / Depreciation charge for the year | (521) | (522) |
Disposals | 201 | |
Net exchange differences | (134) | 278 |
Property, plant and equipment at end of period | (5,268) | (4,814) |
Right of use assets | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 4,077 | |
Property, plant and equipment at end of period | 1,789 | 4,077 |
Right of use assets | Cost | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | 12,359 | 12,890 |
Additions / Depreciation charge for the year | 1,574 | 0 |
Disposals | (2,684) | |
Net exchange differences | 86 | (531) |
Property, plant and equipment at end of period | 11,335 | 12,359 |
Right of use assets | Accumulated depreciation | | |
Reconciliation of changes in property, plant and equipment [abstract] | | |
Property, plant and equipment at beginning of period | (8,282) | (5,996) |
Additions / Depreciation charge for the year | (2,113) | (2,642) |
Disposals | 994 | |
Net exchange differences | (145) | 356 |
Property, plant and equipment at end of period | $ (9,546) | $ (8,282) |