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Acquisitions - Additional Information (Details) |  |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Feb. 25, 2022 USD ($) | Feb. 15, 2021 USD ($) | May 22, 2020 USD ($) | Jun. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2022 USD ($) loan | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Feb. 26, 2022 USD ($)
Goodwill |  |  |  | $ 27,288,000 |  |  |  | $ 14,089,000 |  |  |  |  |  |  |  | $ 27,288,000 | $ 14,089,000 |  |
Bargain purchase gain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (123,000) |
Noninterest expense |  |  |  | 17,331,000 | $ 16,757,000 | $ 15,070,000 | $ 14,221,000 | $ 14,201,000 | $ 13,528,000 | $ 13,046,000 | $ 13,272,000 | $ 15,509,000 | $ 13,569,000 | $ 13,025,000 | $ 12,349,000 | 63,379,000 | $ 54,047,000 | $ 54,452,000 |
Purchased credit-impaired loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,935,000 |  |  |
Loan portfolio |  |  |  | 204,100,000 |  |  |  |  |  |  |  |  |  |  |  | 204,100,000 |  |  |
Fair value discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100,000 |  |  |
Fair value |  |  |  | 187,000,000.0 |  |  |  |  |  |  |  |  |  |  |  | 187,000,000.0 |  |  |
Gross |  |  |  | $ 211,000,000.0 |  |  |  |  |  |  |  |  |  |  |  | $ 211,000,000.0 |  |  |
Number of PCD loans identified | loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 31 |  |  |
PCD loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,055,000 |  |  |
Fortune Financial Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration | $ 12,664,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price allocated to core deposit intangible | $ 1,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Core deposit intangible assets amortized period | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 12,756,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,800,000
Transaction value | $ 35,548,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fortune Financial Corporation | Noninterest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,400,000 |  |  |
First National Bank, Cairo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration |  | $ 26,932,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | 442,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction value |  | $ 26,932,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First National Bank, Cairo | Noninterest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 50,000 |  |  |
Central Federal Bancshares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration |  |  | $ 21,942,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price allocated to core deposit intangible |  |  | $ 540,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Core deposit intangible assets amortized period |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bargain purchase gain |  |  | (123,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction value |  |  | 21,942,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash paid for the acquisition |  |  | 9,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noninterest expense |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased credit-impaired loans |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan portfolio |  |  | 52,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value discount |  |  | $ 662,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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