Note 4 - Revenue and Contracts with Customers 1 (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Accounts Receivable, after Allowance for Credit Loss	$ 704,985		$ 704,985		$ 780,132
Contract with Customer, Liability, Current	555,368		555,368		395,348
Contract with Customer, Liability, Noncurrent	1,710,044		1,710,044		$ 1,262,667
Contract with Customer, Liability, Revenue Recognized	67,602	$ 18,564	142,849	$ 40,028
Revenues	$ 144,459	$ 33,726	$ 249,032	$ 80,878

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details