Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v3.22.0.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Feb. 21, 2022
Jun. 30, 2021
Document Information [Line Items]      
Entity Central Index Key 0001621832    
Entity Registrant Name Aqua Metals, Inc.    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 001-37515    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 47-1169572    
Entity Address, Address Line One 5370 Kietzke Lane, Suite 201.    
Entity Address, City or Town Reno    
Entity Address, State or Province NV    
Entity Address, Postal Zip Code 89511    
City Area Code 775    
Local Phone Number 446-4418    
Title of 12(b) Security Common Stock    
Trading Symbol AQMS    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 83,299,276
Entity Common Stock, Shares Outstanding   71,313,820  
Auditor Name ArmaninoLLP    
Auditor Location San Ramon, California    
Auditor Firm ID 32    
ICFR Auditor Attestation Flag true