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v3.22.2.2

SHORT-TERM AND LONG-TERM BORROWINGS - Long Term Debt Narrative (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
May 15, 2022 USD ($) | Sep. 30, 2022 USD ($) Period $ / shares shares | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |
Subordinated debentures, net of issuance costs |  | $ 20,000 | $ 73,980 |
Public offering |  | $ 20,000 | $ 0 | $ 0
First Midwest Financial Capital Trust I |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance of trust preferred securities (in shares) | shares |  | 10,000 |  |
Number of authorized shares of trust preferred securities issued (in shares) | shares |  | 10,310 |  |
Number of consecutive semi-annual periods that interest payments on capital securities may be deferred | Period |  | 10 |  |
Redemption price per capital security (in dollars per share) | $ / shares |  | $ 1,000 |  |
First Midwest Financial Capital Trust I | First Midwest Financial Capital Trust I |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 100.00% |  |
First Midwest Financial Capital Trust I | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  | 3.75% |  |
Effective interest rate |  | 7.98% | 3.93% |
5.75% Fixed to Floating Rate Subordinated Debt, Due August 15, 2026 | Subordinated debentures |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Subordinated debentures, net of issuance costs | $ 75,000 | $ 20,000 |  |
Interest rate, stated percentage | 5.75% |  |  |
Payment of subordinated debt | $ 75,000 |  |  |
Payment of interest | $ 1,000 |  |  |
6 Point 625 Percent Fixed to Floating Rate Subordinated Debt, Due 2032 | Subordinated debentures |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage |  | 6.625% |  |
Public offering |  | $ 20,000 |  |
Weighted Average | First Midwest Financial Capital Trust I | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate |  | 12.50% |  |
Crestmark Bancorp, Inc. |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate |  | 6.75% |  |
Long-term borrowings |  | $ 3,400 |  |
Debt instrument, term |  | 30 years |  |
Crestmark Bancorp, Inc. | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  | 3.00% |  |

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- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
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