Note 11 - Stockholders' Equity (Details Textual) - USD ($)			3 Months Ended						8 Months Ended		9 Months Ended
	Mar. 08, 2022	Jun. 18, 2021	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement, Expense			$ 71,820			$ 83,699					$ 220,591	$ 193,396
Stock Issued During Period, Value, Acquisitions								$ 600,004
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)											295,275
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture			$ 11,002	$ 16,002	$ 12,002	$ 18,009	$ 18,006	22,020
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)			0			0					0	0
Class of Warrant or Right, Issued During Period (in shares)			0			0					0	0
Common Stock [Member]
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)				28,020			26,006
Stock Issued During Period, Value, Acquisitions								$ 27
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)			255,275		40,000	2,500	1,250	274,250
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited (in shares)			33,333	14,375	19,834		1,250
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares)			16,874	23,150	15,388	8,547	9,117	9,382
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture			$ 2	$ 2	$ 1	$ 1	$ 1	$ 1
Common Stock [Member] | Director [Member]
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares)			16,874			554,128					8,547	27,046
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture			$ 11,002			$ 39,006					$ 18,009	$ 58,035
Restricted Stock [Member]
Share-Based Payment Arrangement, Expense			$ 50,422			$ 65,836					$ 164,259	$ 156,880
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)												275,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)											3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value											$ 170,974	$ 592,075
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited (in shares)											67,542	1,250
Swivel Secure Europe [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	269,060
Business Combination, Indemnification Assets, Amount as of Acquisition Date	$ 89,687
Stock Issued During Period, Value, Acquisitions	$ 600,004
Business Acquisition, Share Price (in dollars per share)	$ 2.23
Employee Stock Purchase Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)		789,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent		85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)									28,020	26,006
Share-Based Payment Arrangement, Expense									$ 3,563	$ 8,314