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Note 8 - Debt Obligations (Details Textual) - USD ($)									3 Months Ended				6 Months Ended			12 Months Ended
Note 8 - Debt Obligations (Details Textual) - USD ($)	Jan. 27, 2024	Jan. 16, 2024	Dec. 27, 2023	Dec. 19, 2023	Apr. 06, 2023	Dec. 16, 2022	Oct. 25, 2022	Dec. 15, 2021	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2023	Apr. 24, 2024	Apr. 22, 2024	Apr. 15, 2024	Nov. 12, 2023	Sep. 30, 2023	Aug. 22, 2022
Gain (Loss) on Extinguishment of Debt									$ (521,622)		$ 0		$ (521,622)	$ 0
Proceeds from Issuance of Debt													2,000,000	0
Stock Issued During Period, Value, New Issues									$ 3,750,000	$ 1,463,710	$ 500,000	$ 2,150,000
Debt Conversion, Converted Instrument, Amount													(0)	$ 121,193
Debt Conversion, Original, Principal Converted													3,363,152
Debt Conversion, Original, Accrued Interest Converted													166,707
Debt Conversion, Original Debt, Amount													$ 2,829,567
Conversion of Kips Bay Note to Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)													14,521,500
Debt Conversion, Converted Instrument, Amount													$ 4,301,634
Debt Instrument, Convertible, Conversion Price (in dollars per share)									$ 0.3				$ 0.3
Debt Conversion, Original, Principal Converted													$ 3,363,152
Debt Conversion, Original, Accrued Interest Converted													$ 166,707
Conversion of Ionic Ventures LLC Unsecured Convertible Note Into Common Shares [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)															6,490,661
Debt Conversion, Converted Instrument, Amount															$ 3,452,848
Debt Instrument, Convertible, Conversion Price (in dollars per share)											$ 0.53			$ 0.53	$ 0.53
Debt Conversion, Original Debt, Amount															$ 2,400,000
Debt Conversion, Original Debt, Interest, Amount															58,707
Derivative Liability, Reverted Upon Conversion															$ 996,254
GHF, Inc. Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						1,000,000																200,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)																	$ 0.4555					$ 1
Warrants and Rights Outstanding																	$ 85,331
Second GHF Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)						$ 0.4555
Class of Warrant or Right, Exercisable (in shares)						500,000
Third GHF Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)						$ 2.5217
Class of Warrant or Right, Exercisable (in shares)						500,000
Alvin Fund Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)																				1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)																				$ 0.7
Alvin Fund 2023 Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)																		$ 0.4555
Warrants and Rights Outstanding																		$ 22,900
GHF 2021 Note [Member]
Debt Instrument, Interest Rate, Stated Percentage									12.00%				12.00%			12.00%
GHF 2021 Note [Member] \| Unsecured Debt [Member]
Debt Instrument, Face Amount								$ 5,000,000
Proceeds from Issuance of Long-Term Debt								4,550,000
Debt Instrument, Unamortized Discount								$ 450,000
Debt Instrument, Interest Rate, Stated Percentage								6.00%											12.00%
Gain (Loss) on Extinguishment of Debt									$ 331,891
Interest Expense, Debt									133,884		$ 158,447		$ 292,331	$ 315,152
Amortization of Debt Discount (Premium)									$ 21,755		94,273		$ 116,028	187,510
Alvin Fund 2022 Note [Member]
Debt Instrument, Face Amount							$ 2,000,000
Debt Instrument, Interest Rate, Stated Percentage							9.00%		16.00%				16.00%			16.00%					16.00%
Interest Expense, Debt									$ 79,781		107,206		$ 159,562	213,234
Amortization of Debt Discount (Premium)									$ 0		62,329		$ 0	123,973
Stock Issued During Period, Shares, New Issues (in shares)							250,000
Alvin Fund 2023 Note [Member]
Debt Instrument, Face Amount																				$ 2,100,000
Debt Instrument, Unamortized Discount																				$ 100,000
Debt Instrument, Interest Rate, Stated Percentage									12.00%				12.00%			12.00%		12.00%		8.00%
Gain (Loss) on Extinguishment of Debt									$ (189,731)
Interest Expense, Debt									69,100		0		$ 162,102	0
Amortization of Debt Discount (Premium)									$ 11,796		0		$ 62,913	0
Kips Bay Note [Member]
Debt Instrument, Face Amount		$ 2,000,000	$ 5,263,157
Debt Instrument, Unamortized Discount			$ 263,157
Debt Instrument, Interest Rate, Stated Percentage			8.00%						8.00%				8.00%			8.00%
Interest Expense, Debt									$ 383,091		0		$ 825,709	0
Amortization of Debt Discount (Premium)									312,493		0		664,459	0
Stock Issued During Period, Shares, New Issues (in shares)		180,210														308,931
Proceeds from Issuance of Debt	$ 2,000,000		$ 3,000,000
Debt Instrument, Fee Amount			$ 250,000
Stock Payable, Noncurrent																$ 150,000
Stock Issued, Percentage of Principal of Debt		1.75%														3.00%
Stock Issued During Period, Value, New Issues		$ 92,105														$ 157,895
Shares Issued, Price Per Share (in dollars per share)		$ 0.511														$ 0.511
Derivative Liability									$ 470,000				$ 470,000			$ 1,360,000
Aqua Metals Note Payable [Member]
Debt Instrument, Face Amount				$ 600,000
Debt Instrument, Interest Rate, Stated Percentage				9.76%					9.76%				9.76%			9.76%
Interest Expense, Debt				$ 33,673					$ 9,737		0		$ 23,124	0
Debt Instrument, Periodic Payment				$ 50,000
Ionic Ventures LLC Unsecured Convertible Note [Member]
Debt Instrument, Face Amount						$ 3,150,000
Debt Instrument, Unamortized Discount						$ 175,000
Debt Instrument, Interest Rate, Stated Percentage						8.00%
Gain (Loss) on Extinguishment of Debt											32,800			(237,656)
Interest Expense, Debt									0		93,571		0	250,304
Amortization of Debt Discount (Premium)									$ 0		$ 70,093		$ 0	$ 167,582
Proceeds from Issuance of Debt						$ 2,975,000
Ionic Ventures LLC Unsecured Convertible Note [Member] \| Ionic Ventures LLC [Member]
Investment, Shares Returned (in shares)					327,549