Note 4 - Valuation Accounts - Accounts Receivables, Net and Contract Liabilities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023	Jan. 01, 2023
Accounts receivable, net	$ 6,548,251	$ 5,564,138	$ 4,375,167
Contract liabilities	0	0	0
Related Party [Member]
Accounts receivable, net	0	0	0
Trade Accounts Receivable [Member]
Accounts receivable, net	$ 6,548,251	$ 5,564,138	$ 4,375,167

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-2

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant