Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 25, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Central Index Key	0001042187
Entity Registrant Name	Yunhong CTI LTD.
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	000-23115
Entity Incorporation, State or Country Code	IL
Entity Tax Identification Number	36-2848943
Entity Address, Address Line One	22160 N. Pepper Road
Entity Address, City or Town	Lake Barrington
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60010
City Area Code	847
Local Phone Number	382-1000
Title of 12(b) Security	Common Stock, no par value per share
Trading Symbol	CTIB
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
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 7,192,000
Entity Common Stock, Shares Outstanding		5,911,750
Auditor Name	RBSM LLP
Auditor Location	New York, NY
Auditor Firm ID	587