Note 2 - Accounts Receivable - Accounts Receivable (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Less allowance for credit losses	$ (82,068)	$ (72,045)
Accounts receivable current - net	3,154,595	2,762,748
Accounts receivable long term	793,724	421,883
Trade Accounts Receivable [Member]
Accounts receivable - current	3,156,094	2,834,793
Accounts receivable long term	546,909	0
Contract Receivables [Member]
Accounts receivable - current	80,569	0
Accounts receivable long term	$ 246,815	$ 421,883

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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