Earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Earnings per share [abstract] | ||||
| Profit attributable to DoubleDown Interactive Co., Ltd. | $ 32,868 | $ 21,842 | $ 68,254 | $ 45,688 |
| Weighted average shares outstanding - basic (in shares) | 2,477,672 | 2,477,672 | 2,477,672 | 2,477,672 |
| Basic earnings per share (in dollars per share) | $ 13.27 | $ 8.82 | $ 27.55 | $ 18.44 |
| Dilutive effect of all instruments on weighted average number of ordinary shares | 0 | 0 | 0 | 0 |