| Intangible assets and goodwill |
Intangible assets and goodwill Changes in the net book value of intangible assets for the six months ended June 30, 2026 and 2025 are as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2026 | | Goodwill | Trademarks | Customer
relationships | Purchased
technology | Software | Gaming License | Total | | Balance at January 1, 2026 | $ | 426,659 | | $ | 35,455 | | $ | 4,529 | | $ | 6,081 | | $ | 3,485 | | $ | 30,316 | | $ | 506,525 | | | Acquisition | — | | 5 | | — | | — | | — | | — | | $ | 5 | | | Amortization | — | | (61) | | (1,225) | | (385) | | (549) | | (2,034) | | $ | (4,254) | | | | | | | | | | | Translation differences | (1,392) | | (13) | | (110) | | (175) | | (94) | | (872) | | $ | (2,656) | | | Ending balance | $ | 425,267 | | $ | 35,386 | | $ | 3,194 | | $ | 5,521 | | $ | 2,842 | | $ | 27,410 | | $ | 499,620 | |
| | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2025 | | Goodwill | Trademarks | Customer
relationships | Purchased
technology | Software | Gaming License | Total | | Balance at January 1, 2025 | $ | 395,804 | | $ | 35,009 | | $ | 6,197 | | $ | 6,072 | | $ | 28 | | $ | 360 | | $ | 443,470 | | | | | | | | | | | Amortization | — | | (2) | | (1,149) | | (361) | | (7) | | (48) | | (1,567) | | | Translation differences | 1,885 | | 1 | | 693 | | 733 | | 3 | | 39 | | 3,354 | | | Ending balance | $ | 397,689 | | $ | 35,008 | | $ | 5,741 | | $ | 6,444 | | $ | 24 | | $ | 351 | | $ | 445,257 | |
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