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Derivative Financial Instruments - Summary of Company's Net Credit Exposure Relating to Oil and Gas Swaps and Options with Bank Counterparties (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Oil and Natural Gas Swaps and Options [Member]    
Credit Derivatives [Line Items]    
Credit exposure $ 21,093 $ 6,560