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Assets Retirement Obligations - Summary of Activity Associated with Asset Retirement Obligations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]      
Asset retirement obligations—beginning of year $ 5,689 $ 5,928 $ 5,399
Accretion expense (160) 320 391
New asset retirement obligations 0 350 177
Decommissioning (228) (909) (39)
Asset retirement obligations—end of year $ 5,301 $ 5,689 $ 5,928