Note 5 - Shareholders' Equity (Details Textual) - USD ($)					1 Months Ended	3 Months Ended			6 Months Ended		9 Months Ended		12 Months Ended
	Apr. 01, 2021	Mar. 31, 2021	Mar. 29, 2021	Jan. 01, 2021	Feb. 29, 2020	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2021	Nov. 10, 2020	Nov. 09, 2020	Mar. 23, 2018	Dec. 30, 2016
Preferred Stock, Shares Authorized (in shares)											20,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)											$ 0.001
Common Stock Shares Exchanged (in shares)											178,000
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)						13,021	18,099
Share-based Payment Arrangement, Expense						$ 41,916	$ 144,201		$ 60,012	$ 407,814
Deferred Compensation Arrangement with Individual, Exercise Price (in dollars per share)						$ 1.92	$ 2.21
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued						$ 25,000	$ 40,000
Two Thousand Eighteen Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)								10,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)								3 years
Two Thousand Eighteen Stock Option Plan [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)				10 years
Two Thousand Eighteen Stock Option Plan [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.33%
Two Thousand Eighteen Stock Option Plan [Member] | Share-Based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.33%
Two Thousand Eighteen Stock Option Plan [Member] | Share-Based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.33%
Share-Based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Expense						$ 16,916	$ 24,618		$ 35,012	$ 49,481
Share-Based Payment Arrangement, Option [Member] | Two Thousand Eighteen Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)																450,000	450,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)													105,000
Share-Based Payment Arrangement, Option [Member] | The 2018 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)															900,000
CEO/CFO [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)			1,050,000
Stock Issued During Period, Value, Issued for Services			$ 2,005,500
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)			250,000
Chief Executive Officer [Member]
Share-based Payment Arrangement, Expense		$ 477,500
ShipTime Acquisition [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)											6,218
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)						5,000,000			5,000,000					5,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)						$ 0.001			$ 0.001					$ 0.001
Preferred Stock, Shares Issued, Total (in shares)						0			0					0				5,000,000
Percentages of Payment Obligation											1.50%
Preferred Stock, Liquidation Preference Per Share (in dollars per share)											$ 3.03
ShipTime Canada Stock [Member]
Conversion of Stock, Shares, Convertible (in shares)					1
Common Stock Shares Exchanged (in shares)											500
PAID Preferred Stock [Member]
Conversion of Stock, Shares Issuable (in shares)					45
PAID Common Stock [Member]
Conversion of Stock, Shares Issuable (in shares)					311						356
Common Stock Exercised Shares (in shares)											1,461,078
Exchange of Preferred to Common (in shares)												1,015,851
Paid Series a Preferred Stock Shares Total (in shares)											2,089,298
Common Stock, Capital Shares Reserved for Future Issuance (in shares)											2,213,608
PAID Series A Preferred Stock [Member]
Preferred Stock Exercised Shares (in shares)											1,461,078
Exchange of Preferred to Common (in shares)												1,015,851