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Commitments and Contingencies - Assets Relating to Finance Leases Included in Equipment (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Commitments And Contingencies [Line Items]    
Finance lease assets, gross $ 440 $ 434
Less: Accumulated depreciation and amortization (223) (187)
Finance lease assets, net $ 217 $ 247