Quarterly report [Sections 13 or 15(d)]

Note 1 - Organization (Details Textual)

Note 1 - Organization (Details Textual)				3 Months Ended		6 Months Ended	9 Months Ended
Note 1 - Organization (Details Textual)	Oct. 16, 2025 USD ($)	Aug. 04, 2025	Nov. 05, 2024	Sep. 30, 2025 USD ($) $ / shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) $ / shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) shares	May 15, 2025 USD ($)	Dec. 31, 2024 USD ($) $ / shares	Dec. 18, 2024 USD ($)	Aug. 22, 2024 USD ($)	Feb. 01, 2023 USD ($)
Net Income (Loss) Attributable to Parent				$ (3,121,000)	$ (5,210,000)		$ (18,206,000)	$ (17,112,000)
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation							(7,648,000)	(11,637,000)
Cash and Cash Equivalent				3,586,000		$ 3,586,000	3,586,000			$ 4,079,000
Liabilities, Current				3,459,000		3,459,000	3,459,000			8,182,000
Retained Earnings (Accumulated Deficit)				(265,976,000)		(265,976,000)	(265,976,000)			$ (247,770,000)
Gain Loss on Sale of Property, Plant and Equipment, Excluding Amount in Cost of Good Sold				$ (25,000)	$ (448,000)	$ (3,790,000)	$ (9,037,000)	$ (448,000)
Common Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares				$ 0.001		$ 0.001	$ 0.001			$ 0.001
ATM [Member]
Equity Offering, Maximum Amount				$ 30,000,000		$ 30,000,000	$ 30,000,000					$ 30,000,000
Stock Issued During Period, Shares, New Issues (in shares) \| shares							833,219	30,605
Proceeds from Issuance of Common Stock							$ 5,921,000	$ 2,820,000
Equity Offering, Remaining Availability				0		0	0
ELOC [Member]
Equity Offering, Maximum Amount									$ 10,000,000
Proceeds from Issuance of Common Stock							$ 903,000	$ 0
ELOC [Member] \| Lincoln [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares							177,283
Equity Offering, Remaining Availability				9,097,000		9,097,000	$ 9,097,000
Equity Committed, Issuable, Maximum Value									$ 10,000,000
Equity Offering, Amount Sold							903,000
Subsequent Event [Member]
Proceeds from Issuance or Sale of Equity	$ 12,000,000
Secured Promissory Notes [Member]
Debt Instrument, Face Amount				1,500,000		1,500,000	1,500,000				$ 1,500,000
Aqua Metals Reno, Inc [Member] \| Loan Agreement [Member] \| Summit Investment Services, LLC [Member]
Debt Instrument, Face Amount				$ 3,000,000		$ 3,000,000	$ 3,000,000						$ 3,000,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		10	20