Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 25, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Entity File Number	000-27072
Entity Registrant Name	AIM IMMUNOTECH INC.
Entity Central Index Key	0000946644
Entity Tax Identification Number	52-0845822
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2117 SW Highway 484
Entity Address, City or Town	Ocala
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	34473
City Area Code	(352)
Local Phone Number	448-7797
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	AIM
Security Exchange Name	NYSE
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			$ 101,114,240
Entity Common Stock, Shares Outstanding		47,994,672
Documents Incorporated by Reference	None
ICFR Auditor Attestation Flag	false
Auditor Firm ID	243
Auditor Name	BDO USA, LLP
Auditor Location	Miami, Florida