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v3.24.3

BORROWINGS - Subordinated Notes (Details) - Subordinated Debt - USD ($) $ in Millions | Apr. 01, 2024 | Jun. 02, 2022 | Jun. 01, 2020 | Sep. 30, 2024
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5.25% Notes Maturing June 1, 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance of debt |  |  | $ 125.0 |
Interest rate |  |  | 5.25% |
Duration of fixed interest rate |  |  | 5 years |
Floating interest rate margin (as a percent) |  |  | 5.11% |
5.000% Notes Maturing June 15, 2032 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance of debt |  | $ 100.0 |  |
Floating interest rate margin (as a percent) |  | 2.52% |  |
Fixed to floating interest rate (as a percent) |  | 5.00% |  |
Percentage of principal amount of notes |  | 100.00% |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) |  |
5.25% Notes Maturing December 4, 2030 | Merchants and Manufacturers Bank Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance of debt | $ 4.0 |  |  |
Floating interest rate margin (as a percent) | 4.97% |  |  |
Fixed to floating interest rate (as a percent) | 5.25% |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) |  |  |
Fair value discount outstanding |  |  |  | $ 0.1

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