Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Dec. 31, 2019
Mar. 10, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-37515    
Entity Registrant Name Aqua Metals, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 47-1169572    
Entity Address, Address Line One 2500 Peru Dr.    
Entity Address, City or Town McCarran    
Entity Address, State or Province NV    
Entity Address, Postal Zip Code 89437    
City Area Code 775    
Local Phone Number 525-1936    
Title of 12(b) Security Common Stock    
Trading Symbol AQMS    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period true    
Entity Shell Company false    
Entity Public Float     $ 83,247,290
Entity Common Stock, Shares Outstanding (in shares)   59,767,720  
Documents Incorporated by Reference Portions of the registrant’s definitive proxy statement for the registrant’s 2020 Annual Meeting of Stockholders to be filed pursuant to Regulation 14A within 120 days of the registrant’s year ended December 31, 2019 are incorporated herein by reference into Part III of this Annual Report on Form 10-K.    
Entity Central Index Key 0001621832    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false    
Current Fiscal Year End Date --12-31