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Borrowings - Summary of Required Payments for Borrowings, Excluding Secured Borrowing and Revolving Lines of Credit (Detail)
$ in Thousands
Sep. 30, 2021
USD ($)
Debt Disclosure [Abstract]  
Remainder of 2021 $ 0
2022 0
2023 0
2024 0
2025 50,000
Total $ 50,000