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Accounts Payable, Accrued Expenses and Other Liabilities - Components of Current Portion of Accounts Payable, Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Payables and Accruals [Abstract] |  |
Accounts payable and accrued expenses | $ 162,364 | $ 97,304
Outside broker payable | 43,363 | 53,504
Payroll taxes payable | 67,228 | 60,696
Corporate taxes payable | 31,990 | 25,666
Derivative liability | 11,953 | 17,948
Right-of-use liabilities | 50,932 | 29,468
Credit enhancement deposit | 0 | 25,000
Contingent consideration | 5,611 | 16,962
Total | $ 373,441 | $ 326,548

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