Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Long Term Purchase Commitment [Line Items]
Unfunded commitments related to loans held for investment	$ 488.9	$ 423.5
Accrued Expenses and Other Liabilities
Long Term Purchase Commitment [Line Items]
Allowance for credit losses on loan commitments	$ 3.4	$ 2.9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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