Business combination - Summary of fair value of identifiable assets and liabilities as of the settlement date (Parenthetical) (Detail) $ in Thousands |
Dec. 31, 2025
USD ($)
|
|---|---|
| TextBlock [Abstract] | |
| Provision for plugging | $ 12,013 |
| Provision for abandonment and contingencies | 12,051 |
| Deferred tax liabilities on oil and gas property | $ 194,035 |