| Intangible assets and goodwill |
Intangible assets and goodwill Changes in the net book value of intangible assets for the three months ended March 31, 2026 and 2025 are as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 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 | | | | | | | | | | | | | | | | | | Amortization | — | (32) | (615) | (193) | (275) | (1,019) | (2,134) | | Translation differences | (1,096) | (9) | (96) | (141) | (79) | (705) | (2,126) | | Ending balance | $ | 425,563 | $ | 35,414 | $ | 3,818 | $ | 5,747 | $ | 3,131 | $ | 28,592 | $ | 502,265 |
| | | | | | | | | | | | | | | | | | | | | | | | | March 31, 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 | — | (1) | (553) | (174) | (3) | (23) | (754) | | Translation differences | 596 | — | 230 | 235 | — | 13 | 1,074 | | Ending balance | $ | 396,400 | $ | 35,008 | $ | 5,874 | $ | 6,133 | $ | 25 | $ | 350 | $ | 443,790 |
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