Note 1 - Organization and Significant Accounting Policies - Schedule of Segment Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues, net	$ 5,508,629	$ 4,445,910	$ 15,314,444	$ 13,209,958
Operating income loss	25,246	(149,780)	(541,197)	(263,134)
Service [Member]
Revenues, net	0	2,495	3,863	15,020
Operating income loss	0	(691)	(4,426)	4,668
Merchant Processing Services [Member]
Revenues, net	3,391	12,478	22,911	37,654
Operating income loss	(13,080)	(95,967)	(135,680)	(166,984)
Shipping Coordination and Label Generation Services [Member]
Revenues, net	5,505,238	4,430,937	15,287,670	13,157,284
Operating income loss	86,279	(21,496)	(259,744)	14,382
Corporate Operations [Member]
Operating income loss	$ (47,953)	$ (31,626)	$ (141,347)	$ (115,200)