Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Jan. 01, 2025
Contract with Customer, Asset, after Allowance for Credit Loss, Current	$ 334,051		$ 295,400
Accounts Receivable, after Allowance for Credit Loss				$ 3,354,417
Contract with Customer, Asset, Allowance for Credit Loss	793,178	$ 887,500
Short-Term Investments	0
Inventory Valuation Reserves	13,257	8,597
Inventory, Net	1,315,386	1,615,469	$ 1,615,469
Inventory, Work in Process, Gross	42,738	97,942
Prepaid Supplies	$ 289,749	53,192
Capitalized Contract Cost, Amortization Period (Year)	5 years
Research and Development Expense	$ 164,304	$ 123,331
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES
Concentration Risk, Percentage	95.10%	95.90%
Minimum [Member]
Contract with Customer, Liability, Interest Rate	2.00%
Property, Plant and Equipment, Useful Life (Year)	2 years
Maximum [Member]
Contract with Customer, Liability, Interest Rate	8.00%
Property, Plant and Equipment, Useful Life (Year)	5 years
Customer Deposits [Member]
Contract with Customer, Liability				$ 870,602