Note 8 - Allowance for Loan Losses From Mortgage Loans On Real Estate - Allowance for Loss on Premium Financing (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Financing Receivable, Collectively Evaluated for Impairment	$ 255,278,115		$ 255,278,115		$ 206,157,105
Residential Portfolio Segment [Member]
Allowance, beginning	1,090,024	$ 1,027,453	1,099,470	$ 964,035
Charge offs	0	0	0	0
Recoveries	0	0	0	0
Provision	3,339	123,150	(6,107)	186,568
Allowance, ending	1,093,363	1,150,603	1,093,363	1,150,603
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	1,093,363	1,150,603	1,093,363	1,150,603
Financing receivable, Individually evaluated for reserve allowance	0	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	217,579,322	228,970,075	217,579,322	228,970,075
Commercial Portfolio Segment [Member]
Allowance, beginning	171,988	71,288	150,173	71,930
Charge offs	0	0	0	0
Recoveries	0	0	0	0
Provision	17,453	18,983	39,268	18,341
Allowance, ending	189,441	90,271	189,441	90,271
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	189,441	90,271	189,441	90,271
Financing receivable, Individually evaluated for reserve allowance	0	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	37,698,793	17,963,830	37,698,793	17,963,830
Premium Finance Loans [Member]
Allowance, beginning	1,262,012	1,098,741	1,249,643	1,035,965
Charge offs	0	0	0	0
Recoveries	0	0	0	0
Provision	20,792	142,133	33,161	204,909
Allowance, ending	1,282,804	1,240,874	1,282,804	1,240,874
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	1,282,804	1,240,874	1,282,804	1,240,874
Financing receivable, Individually evaluated for reserve allowance	0	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	$ 255,278,115	$ 246,933,905	$ 255,278,115	$ 246,933,905

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
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-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Publisher FASB
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
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-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

Amount of allowance for credit loss on financing receivable evaluated on collective basis. Excludes financing receivable evaluated on individual basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

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Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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