Note 12 - Stockholders' Equity (Details Textual) - USD ($)					3 Months Ended		9 Months Ended
	Mar. 14, 2022	Mar. 11, 2022	Mar. 09, 2022	Jan. 15, 2021	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Common Stock, Par or Stated Value Per Share (in dollars per share)					$ 0.001		$ 0.001		$ 0.001	[1]
Stock Issued During Period, Value, New Issues						$ 2,984,260
Payments of Stock Issuance Costs							$ (0)	$ 545,090
Preferred Stock, Shares Authorized (in shares)					50,000,000		50,000,000		50,000,000	[1]
Preferred Stock, Shares Issued (in shares)					49,360		49,360		49,360	[1]
Preferred Stock, Shares Outstanding, Ending Balance (in shares)					49,360		49,360		49,360	[1]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 776,005		$ 776,005
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					2 years 3 months 18 days
Stock Issued During Period, Shares, Issued for Services (in shares)					0	0	0	0
Omnibus Equity Incentive Plan 2021 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value					$ 44,550		$ 44,550
Omnibus Equity Incentive Plan 2021 [Member] | Restricted Stock Awards [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)							288,733
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Grants in Period							$ 394,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)							$ 1.36
Omnibus Equity Incentive Plan 2021 [Member] | Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 406,695		$ 406,695
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					4 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Fair Value					$ 423,800
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)					6 years 7 months 17 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate					192.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate					3.59%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate					0.00%
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)					5,000,000		5,000,000
Preferred Stock, Shares Issued (in shares)					0		0		0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)					0		0		0
Series B Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)					45,000,000		45,000,000
Series B Convertible Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)					20		20
Conversion of Stock, Shares Converted (in shares)				3,672
Conversion of Stock, Shares Issued (in shares)				73,440
Preferred Stock, Shares Outstanding, Ending Balance (in shares)					49,360		49,360		49,360
The Underwriter’s Warrants [Member]
Class of Warrant or Right, Percentage of Aggregate Shares Sold		5.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	82,500
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2.40
Class of Warrant or Right, Exercise Price, Percentage of Offering Price	120.00%
Warrants and Rights Outstanding	$ 132,000
The Underwriter’s Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0.0210
The Underwriter’s Warrants [Member] | Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input	5
The Underwriter’s Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0
The Underwriter’s Warrants [Member] | Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	1.17
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	1,897,500		1,650,000
Common Stock, Par or Stated Value Per Share (in dollars per share)			$ 0.001
Shares Issued, Price Per Share (in dollars per share)			$ 2.00
Stock Issued During Period, Value, New Issues	$ 3,795,000
Underwritten Public Offering [Member] | Underwriting Discounts [Member]
Payments of Stock Issuance Costs	265,650
Underwritten Public Offering [Member] | Estimated Offering Expenses [Member]
Payments of Stock Issuance Costs	$ 545,090
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)	247,500	247,500
Shares Issued, Price Per Share (in dollars per share)		$ 1.86
Shares Issued, Price Per Share, Discount Rate		7.00%	7.00%
Stock Issued During Period, Option to Purchase Additional Shares, Period of Recognition (Day)			45 days

[1] Derived from audited financial statements