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Note 1 - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts	$ 134,912	$ 59,559
Bad debt expense	37,717	82,066
Receivables written off during the periods	0	(10,298)
Effect of currency translation	(3,107)	3,585
Allowance for doubtful accounts	$ 169,522	$ 134,912

X

- Definition

The effects of currency translation of accounts receivable charged against the allowance of doubtful accounts.

+ References

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- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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