Note 9 - Leases - Operating Lease Balance Sheet Information (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Total lease cost	$ 6,979	$ 14,553
Operating lease right-of-use assets	67,142		$ 73,372
Operating lease liabilities, current portion	25,260		24,642
Operating lease liabilities, non-current portion	42,410		$ 48,994
Total operating lease liabilities	$ 67,670
Weighted average remaining lease term (in years) – operating leases (Year)	2 years 5 months 1 day		2 years 8 months 1 day
Weighted average discount rate – operating leases	5.50%		5.50%
Cash paid for amounts included in the measurement of operating lease liabilities for the three months ended March 31, 2025 and 2024:	$ 11,964		$ 22,613
2025 (9 months remaining)	21,216
2026	29,267
2027	22,477
2028	0
Total future lease payments	72,960
Less: imputed interest	(5,290)
Total	67,670
Approximation [Member]
Operating lease right-of-use assets	67,670		73,372
Total operating lease liabilities	67,670		73,636
Total	$ 67,670		$ 73,636

Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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