Note 13 - Subsequent Events (Details Textual)			1 Months Ended		3 Months Ended
	Mar. 21, 2023 USD ($) $ / shares shares	Mar. 20, 2023 USD ($)	Mar. 31, 2023 USD ($) shares	Mar. 31, 2023 CAD ($) shares	Jun. 30, 2022 USD ($) $ / shares shares
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)					13,021
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued | $					$ 25,000
Deferred Compensation Arrangement with Individual, Exercise Price (in dollars per share) | $ / shares					$ 1.92
Subsequent Event [Member]
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)	46,961
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued | $	$ 82,180	$ 82,180
Stock Issued During Period, Shares, New Issues (in shares)			46,961	46,961
Subsequent Event [Member] | Chief Financial Officer [Member]
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)	250,000
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued | $	$ 437,500
Deferred Compensation Arrangement with Individual, Shares Subject to Repurchase (in shares)	125,000
Deferred Compensation Arrangement with Individual, Exercise Price (in dollars per share) | $ / shares	$ 0.01
Subsequent Event [Member] | Director [Member] | Minimum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)	10,000
Subsequent Event [Member] | Director [Member] | Maximum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)	5,000
Subsequent Event [Member] | Chief Operating Officer [Member]
Annual Employment Salary | $				$ 214,000
Stock Issued During Period, Value, New Issues | $			$ 25,000