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v3.21.2

Subordinated Notes - Additional Information (Detail) - USD ($) $ in Millions |  | 9 Months Ended
--- | --- | ---
Jul. 30, 2021 | Sep. 30, 2021
Debt Instrument [Line Items] |  |
Debt instrument basis points | 2.63% |
Debt instrument, frequency of periodic payment | semi-annually |
Debt instrument, term | 5 years | 3 years
Redemption price of principal amount of notes redeemed | 100.00% |
Private Placement |  |
Debt Instrument [Line Items] |  |
Subordinated notes | $ 35 |
Fixed-to-floating interest rate | 3.25% |
Percentage of notes prices on principal amount | 100.00% |

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