Funds Borrowed - Summary of Maturity of Broker Pools, Excluding Strategic Partner Reserve Deposits (Detail) $ in Thousands	Sep. 30, 2020 USD ($)
Debt Disclosure [Abstract]
Three months or less	$ 111,000
Over three months through six months	91,766
Over six months through one year	188,796
Over one year	668,325
Total deposits	$ 1,059,887

- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing after twelve months from the balance sheet date.

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- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing within six to twelve months after the balance sheet date.

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- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing within three months or fewer from the balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing within three to six months after the balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

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