Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 23, 2021	Jun. 30, 2020
Cover [Abstract]
Entity Registrant Name	Charlie's Holdings, Inc.
Entity Central Index Key	0001134765
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity's Reporting Status Current?	Yes
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	NV
Entity File Number	001-32420
Entity Common Stock, Shares Outstanding		19,638,493,279
Entity Public Float			$ 36,082,430
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020