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Note 5 - Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Accounts receivable	$ 2,817,116	$ 1,234,411
Loss on foreign currency	(50,000)	(50,000)
Allowance for doubtful accounts	(213,785)	(213,785)
Accounts receivable, net of allowances for doubtful accounts	$ 2,553,331	$ 970,626	$ 970,626

X

- Definition

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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Amount, after 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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