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Fair Value Measurements (Tables) | 12 Months Ended
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Jun. 30, 2024
Fair Value Measurements |
Schedule of fair value assets measured on recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements at June 30, 2024, Using:
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets for | ​ | Significant Other | ​ | Significant
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Observable Inputs | ​ | Unobservable Inputs
(dollars in thousands) |  | Fair Value |  | (Level 1) |  | (Level 2) |  | (Level 3)
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Obligations of state and political subdivisions | ​ | $ | 27,753 | ​ | $ | — | ​ | $ | 27,753 | ​ | $ | —
Corporate obligations | ​ | ​ | 31,277 | ​ | ​ | — | ​ | ​ | 31,277 | ​ | ​ | —
Asset backed securities | ​ | ​ | 58,679 | ​ | ​ | — | ​ | ​ | 58,679 | ​ | ​ | —
Other securities | ​ |  | 5,333 | ​ |  | — | ​ |  | 5,333 | ​ |  | —
MBS and CMOs | ​ |  | 304,861 | ​ |  | — | ​ |  | 304,861 | ​ |  | —
Mortgage servicing rights | ​ | ​ | 2,448 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,448
Derivative financial instruments | ​ | ​ | 20 | ​ | ​ | — | ​ | ​ | 20 | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivative financial instruments | ​ | ​ | 15 | ​ | ​ | — | ​ | ​ | 15 | ​ | ​ | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements at June 30, 2023, Using:
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets for | ​ | Significant Other | ​ | Significant
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Observable Inputs | ​ | Unobservable Inputs
(dollars in thousands) |  | Fair Value |  | (Level 1) |  | (Level 2) |  | (Level 3)
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Obligations of state and political subdivisions | ​ | $ | 42,568 | ​ | $ | — | ​ | $ | 42,568 | ​ | $ | —
Corporate obligations | ​ | ​ | 32,538 | ​ | ​ | — | ​ | ​ | 32,538 | ​ | ​ | —
Asset backed securities | ​ | ​ | 68,626 | ​ | ​ | — | ​ | ​ | 68,626 | ​ | ​ | —
Other securities | ​ |  | 3,570 | ​ |  | — | ​ |  | 3,570 | ​ |  | —
MBS and CMOs | ​ | ​ | 270,252 | ​ | ​ | — | ​ | ​ | 270,252 | ​ | ​ | —
Schedule of fair value of nonrecurring measurements | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements at June 30, 2024, Using:
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets for | ​ | Significant Other | ​ | Significant
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Observable Inputs | ​ | Unobservable Inputs
(dollars in thousands) |  | Fair Value |  | (Level 1) |  | (Level 2) |  | (Level 3)
Foreclosed and repossessed assets held for sale | ​ | $ | 759 | ​ | $ | — | ​ | $ | — | ​ | $ | 759
Collateral dependent loans | ​ | ​ | 12,994 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 12,994
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements at June 30, 2023, Using:
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets for | ​ | Significant Other | ​ | Significant
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Observable Inputs | ​ | Unobservable Inputs
(dollars in thousands) |  | Fair Value |  | (Level 1) |  | (Level 2) |  | (Level 3)
Foreclosed and repossessed assets held for sale | ​ | $ | 1,472 | ​ | $ | — | ​ | $ | — | ​ | $ | 1,472
Schedule of losses recognized on assets measured on a nonrecurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(dollars in thousands) | ​ | 2024 | ​ | 2023
Foreclosed and repossessed assets held for sale | ​ | $ | 74 | ​ | $ | 60
Total losses on assets measured on a non-recurring basis | ​ | $ | 74 | ​ | $ | 60
Fair Value Option, Disclosures [Table Text Block] | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ |  | ​ |  | Range |  | ​ |
​ | ​ | Fair value at | ​ | Valuation | ​ | Unobservable | ​ | of | ​ | Weighted-average |
(dollars in thousands) | ​ | June 30, 2024 | ​ | technique | ​ | inputs | ​ | inputs applied | ​ | inputs applied |
Nonrecurring Measurements |  | ​ |  |  |  |  |  |  |  |  |  | ​
Foreclosed and repossessed assets | ​ | $ | 759 |  | Third party appraisal |  | Marketability discount |  | 17.9 - 44.9 | % | 20.3 | %
Collateral dependent loans | ​ | ​ | 12,994 |  | Collateral value |  | Marketability discount |  | 14.5 -52.3 | % | 43.7 | %
Schedule of financial instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2024
​ | ​ | ​ | ​ | ​ | Quoted Prices | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | in Active | ​ | ​ | ​ | ​ | Significant
​ | ​ | ​ | ​ | ​ | Markets for | ​ | Significant Other | ​ | Unobservable
​ | ​ | Carrying | ​ | Identical Assets | ​ | Observable Inputs | ​ | Inputs
(dollars in thousands) |  | Amount |  | (Level 1) |  | (Level 2) |  | (Level 3)
Financial assets |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash and cash equivalents | ​ | $ | 60,904 | ​ | $ | 60,904 | ​ | $ | — | ​ | $ | —
Interest-bearing time deposits | ​ |  | 491 | ​ |  | — | ​ |  | 491 | ​ |  | —
Stock in FHLB | ​ |  | 8,713 | ​ |  | — | ​ |  | 8,713 | ​ |  | —
Stock in Federal Reserve Bank of St. Louis | ​ |  | 9,089 | ​ |  | — | ​ |  | 9,089 | ​ |  | —
Loans receivable, net | ​ |  | 3,797,287 | ​ |  | — | ​ |  | — | ​ |  | 3,639,657
Accrued interest receivable | ​ |  | 23,826 | ​ |  | — | ​ |  | 23,826 | ​ |  | —
Mortgage servicing assets | ​ | ​ | 2,448 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 2,448
Derivative financial instruments | ​ | ​ | 20 | ​ |  | — | ​ |  | 20 | ​ |  | —
Financial liabilities | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Deposits | ​ |  | 3,952,457 | ​ |  | 2,607,653 | ​ |  | — | ​ |  | 1,338,215
Advances from FHLB | ​ |  | 102,050 | ​ |  | — | ​ |  | 100,468 | ​ |  | —
Accrued interest payable | ​ |  | 12,868 | ​ |  | — | ​ |  | 12,868 | ​ |  | —
Subordinated debt | ​ |  | 23,156 | ​ |  | — | ​ |  | — | ​ |  | 20,576
Derivative financial instruments | ​ | ​ | 15 | ​ |  | — | ​ |  | 15 | ​ |  | —
Unrecognized financial instruments (net of contract amount) | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Commitments to originate loans | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Letters of credit | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Lines of credit | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2023
​ | ​ | ​ | ​ | ​ | Quoted Prices | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | in Active | ​ | ​ | ​ | ​ | Significant
​ | ​ | ​ | ​ | ​ | Markets for | ​ | Significant Other | ​ | Unobservable
​ | ​ | Carrying | ​ | Identical Assets | ​ | Observable Inputs | ​ | Inputs
(dollars in thousands) |  | Amount |  | (Level 1) |  | (Level 2) |  | (Level 3)
Financial assets |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash and cash equivalents | ​ | $ | 53,979 | ​ | $ | 53,979 | ​ | $ | — | ​ | $ | —
Interest-bearing time deposits | ​ |  | 1,242 | ​ |  | — | ​ |  | 1,242 | ​ |  | —
Stock in FHLB | ​ |  | 11,540 | ​ |  | — | ​ |  | 11,540 | ​ |  | —
Stock in Federal Reserve Bank of St. Louis | ​ |  | 9,061 | ​ |  | — | ​ |  | 9,061 | ​ |  | —
Loans receivable, net | ​ |  | 3,571,078 | ​ |  | — | ​ |  | — | ​ |  | 3,393,791
Accrued interest receivable | ​ |  | 18,871 | ​ |  | — | ​ |  | 18,871 | ​ |  | —
Financial liabilities | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Deposits | ​ |  | 3,725,540 | ​ |  | 2,661,479 | ​ |  | — | ​ |  | 1,053,650
Advances from FHLB | ​ |  | 133,514 | ​ |  | — | ​ |  | 131,821 | ​ |  | —
Accrued interest payable | ​ | ​ | 4,723 | ​ |  | — | ​ |  | 4,723 | ​ |  | —
Subordinated debt | ​ | ​ | 23,105 | ​ |  | — | ​ |  | — | ​ |  | 20,318
Unrecognized financial instruments (net of contract amount) | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Commitments to originate loans | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Letters of credit | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Lines of credit | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
​

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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