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Property, Plant and Equipment - Schedule of Balances Held Under Other Finance Obligations (Detail) - Other Finance Obligations - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Property Plant And Equipment [Line Items]    
Assets held under other finance obligations $ 230,613 $ 248,028
Less: accumulated amortization 23,649 25,015
Assets held under other finance obligations, net 206,964 223,013
Land    
Property Plant And Equipment [Line Items]    
Assets held under other finance obligations 110,953 116,638
Buildings and Improvements    
Property Plant And Equipment [Line Items]    
Assets held under other finance obligations $ 119,660 $ 131,390