Loans and Allowance for Credit Losses - Nonaccrual loans (Details) - USD ($)	Dec. 31, 2024	Mar. 31, 2024
Nonaccrual loans
Nonaccrual Loans Without an Allowance	$ 704,326
Total nonaccrual loans	704,326
Real estate loans
Nonaccrual loans
Total nonaccrual loans		$ 0
Real estate loans \| Residential
Nonaccrual loans
Nonaccrual Loans Without an Allowance	487,506
Total nonaccrual loans	487,506
Real estate loans \| Home equity line of credit (HELOC)
Nonaccrual loans
Nonaccrual Loans Without an Allowance	116,343
Total nonaccrual loans	116,343
Commercial and industrial
Nonaccrual loans
Nonaccrual Loans Without an Allowance	14,909
Total nonaccrual loans	14,909
Consumer
Nonaccrual loans
Nonaccrual Loans Without an Allowance	85,568
Total nonaccrual loans	$ 85,568

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
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-Section 50
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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