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Funds Borrowed - Summary of Maturity of Broker Pools, Excluding Strategic Partner Reserve Deposits (Detail)
$ in Thousands
Dec. 31, 2021
USD ($)
Debt Disclosure [Abstract]  
Three months or less $ 119,027
Over three months through six months 168,243
Over six months through one year 118,041
Over one year 847,977
Total deposits $ 1,253,288