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Note 4 - Loans - Schedule of Nonaccrual Loans (Details) - USD ($)	Sep. 30, 2025	Jan. 01, 2025	Dec. 31, 2024	Jan. 01, 2024
Nonaccrual	$ 20,457,619	$ 13,962,695	$ 13,962,695	$ 12,776,177
Nonaccrual, no allowance	20,457,619		13,962,695
Loans past 90 days or more still accruing	0		0
Consumer Portfolio Segment [Member]
Nonaccrual	0	0	0	0
Nonaccrual, no allowance	0		0
Loans past 90 days or more still accruing	0		0
Real Estate Loan [Member] | Residential Portfolio Segment [Member]
Nonaccrual	2,502,938	1,863,957	1,863,957	1,432,072
Nonaccrual, no allowance	2,502,938		1,863,957
Loans past 90 days or more still accruing	0		0
Real Estate Loan [Member] | Commercial Real Estate Portfolio Segment [Member]
Nonaccrual	7,060,968	1,205,025	1,205,025	450,392
Nonaccrual, no allowance	7,060,968		1,205,025
Real Estate Loan [Member] | Construction Loans [Member]
Nonaccrual	10,893,713	$ 10,893,713	10,893,713	$ 10,893,713
Nonaccrual, no allowance	10,893,713		10,893,713
Loans past 90 days or more still accruing	$ 0		$ 0

X

- Definition

Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. 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 (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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X

- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. 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 (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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X

- 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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