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Leases - Schedule of Components of Lease Costs (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease cost, primarily classified within "General and administrative" $ 751,002 $ 143,954
Interest expense (21,320) 1,164
Amortization expense 70,476 13,341
Total finance lease costs $ 49,156 $ 14,505