Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
| | Fair Value Measurements at Reporting Date Using | |
| | | | | | Quoted Prices | | | Significant | | | | | |
| | | | | | in Active | | | Other | | | Significant | |
| | | | | | Markets for | | | Observable | | | Unobservable | |
| | | | | | Identical Assets | | | Inputs | | | Inputs | |
| | Total | | | Level 1 | | | Level 2 | | | Level 3 | |
| | | | | | (in thousands) | | | | | |
June 30, 2025 | | | | | | | | | | | | | | | | |
Assets: | | | | | | | | | | | | | | | | |
Available-for-sale securities | | | | | | | | | | | | | | | | |
Mortgage-backed securities | | $ | 6,577 | | | $ | — | | | $ | 6,577 | | | $ | — | |
Collateralized mortgage obligation | | | 2,967 | | | | — | | | | 2,967 | | | | — | |
Corporate bonds | | | 10,494 | | | | — | | | | 10,494 | | | | — | |
Derivative instruments | | | 3 | | | | — | | | | 3 | | | | — | |
Total assets measured at fair value on a recurring basis | | $ | 20,041 | | | $ | — | | | $ | 20,041 | | | $ | — | |
| | | | | | | | | | | | | | | | |
Liabilities: | | | | | | | | | | | | | | | | |
Derivative instruments | | $ | 1,693 | | | $ | — | | | $ | 1,693 | | | $ | — | |
Total liabilities measured at fair value on a recurring basis | | $ | 1,693 | | | $ | — | | | $ | 1,693 | | | $ | — | |
| | | | | | | | | | | | | | | | |
December 31, 2024 | | | | | | | | | | | | | | | | |
Assets: | | | | | | | | | | | | | | | | |
Available-for-sale securities | | | | | | | | | | | | | | | | |
Mortgage-backed securities | | $ | 4,126 | | | $ | — | | | $ | 4,126 | | | $ | — | |
Collateralized mortgage obligation | | | 1,438 | | | | — | | | | 1,438 | | | | — | |
Corporate bonds | | | 1,000 | | | | — | | | | 1,000 | | | | — | |
Derivative instruments | | | 557 | | | | — | | | | 557 | | | | — | |
Total assets measured at fair value on a recurring basis | | $ | 7,121 | | | $ | — | | | $ | 7,121 | | | $ | — | |
| | | | | | | | | | | | | | | | |
Liabilities: | | | | | | | | | | | | | | | | |
Derivative instruments | | $ | 173 | | | $ | — | | | $ | 173 | | | $ | — | |
Total liabilities measured at fair value on a recurring basis | | $ | 173 | | | $ | — | | | $ | 173 | | | $ | — | |
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Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] |
| | June 30, 2025 | |
| | Carrying | | | Fair | | | | | | | | | | | | | |
| | Amount | | | Value | | | Level 1 | | | Level 2 | | | Level 3 | |
| | | | | | (in thousands) | | | | | |
Financial assets: | | | | | | | | | | | | | | | | | | | | |
Cash and cash equivalents | | $ | 98,662 | | | $ | 98,662 | | | $ | 98,662 | | | $ | — | | | $ | — | |
Held-to-maturity securities | | | 66,845 | | | | 62,547 | | | | — | | | | 62,547 | | | | — | |
Federal Home Loan Bank stock | | | 11,302 | | | | 11,302 | | | | — | | | | 11,302 | | | | — | |
Loans, net | | | 1,281,741 | | | | 1,234,293 | | | | — | | | | — | | | | 1,234,293 | |
Loans held for sale | | | 1,504 | | | | 1,504 | | | | — | | | | 1,504 | | | | — | |
Accrued interest receivable | | | 4,775 | | | | 4,775 | | | $ | 4,775 | | | | — | | | | — | |
Bank-owned life insurance | | | 15,178 | | | | 15,178 | | | | — | | | | 15,178 | | | | — | |
| | | | | | | | | | | | | | | | | | | | |
Financial liabilities: | | | | | | | | | | | | | | | | | | | | |
Deposits, other than certificates of deposit | | $ | 411,122 | | | $ | 411,122 | | | $ | — | | | $ | 411,122 | | | $ | — | |
Certificates of deposit | | | 656,316 | | | | 656,799 | | | | — | | | | 656,799 | | | | — | |
Federal Home Loan Bank advances | | | 264,815 | | | | 265,893 | | | | — | | | | 265,893 | | | | — | |
Accrued interest payable | | | 1,839 | | | | 1,839 | | | | 1,839 | | | | — | | | | — | |
| | December 31, 2024 | |
| | Carrying | | | Fair | | | | | | | | | | | | | |
| | Amount | | | Value | | | Level 1 | | | Level 2 | | | Level 3 | |
| | | | | | (in thousands) | | | | | |
Financial assets: | | | | | | | | | | | | | | | | | | | | |
Cash and cash equivalents | | $ | 157,617 | | | $ | 157,617 | | | $ | 157,617 | | | $ | — | | | $ | — | |
Interest-bearing time deposits | | | 100 | | | | 100 | | | | — | | | | 100 | | | | — | |
Held-to-maturity securities | | | 73,215 | | | | 67,505 | | | | — | | | | 67,505 | | | | — | |
Federal Home Loan Bank stock | | | 10,000 | | | | 10,000 | | | | — | | | | 10,000 | | | | — | |
Loans, net | | | 1,136,449 | | | | 1,079,916 | | | | — | | | | — | | | | 1,079,916 | |
Accrued interest receivable | | | 4,015 | | | | 4,015 | | | | 4,015 | | | | — | | | | — | |
Bank-owned life insurance | | | 14,945 | | | | 14,945 | | | | — | | | | 14,945 | | | | — | |
| | | | | | | | | | | | | | | | | | | | |
Financial liabilities: | | | | | | | | | | | | | | | | | | | | |
Deposits, other than certificates of deposit | | $ | 393,018 | | | $ | 393,018 | | | $ | — | | | $ | 393,018 | | | $ | — | |
Certificates of deposit | | | 605,515 | | | | 606,387 | | | | — | | | | 606,387 | | | | — | |
Federal Home Loan Bank advances | | | 234,000 | | | | 232,027 | | | | — | | | | 232,027 | | | | — | |
Accrued interest payable | | | 2,207 | | | | 2,207 | | | | 2,207 | | | | — | | | | — | |
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