Note 3 - Accounts Receivable (Details Textual) - USD ($)	Jun. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable, after Allowance for Credit Loss	$ 28,977,330	$ 21,014,148	$ 19,671,833
Accounts Receivable, Allowance for Credit Loss	$ 158,662	$ 206,770	$ 105,223

Amount of allowance for credit loss on accounts receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Name:	us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant