Note 6 - Legal Proceedings (Details Textual) - USD ($)										9 Months Ended
	Dec. 15, 2021	Nov. 15, 2021	Oct. 15, 2021	Sep. 17, 2021	Jul. 16, 2021	Mar. 16, 2021	Feb. 10, 2021	Sep. 08, 2020	Apr. 05, 2020	Sep. 30, 2021	Dec. 31, 2020
Benchmark Investments, Inc. v. Yunhong CTI Ltd [Member]
Loss Contingency, Damages Sought, Value						$ 500,000
Loss Contingency Accrual, Ending Balance										$ 0	$ 75,187
Settled Litigation [Member] | Airgas USA, LLC v. CTI Industries Corp. [Member]
Litigation Settlement, Amount Awarded to Other Party							$ 125,000
Loss Contingency Accrual, Ending Balance										62,500	125,000
Litigation Settlement, Amount Awarded to Other Party, Term (Month)							10 months
Pending Litigation [Member] | Airgas USA, LLC v. CTI Industries Corp. [Member]
Loss Contingency, Damages Sought, Value								$ 212,000
Transportation Solutions Group LLC [Member] | Settled Litigation [Member] | Alleged Damages for Unpaid Invoices [Member]
Loss Contingency, Damages Sought, Value					$ 98,660
Litigation Settlement, Amount Awarded to Other Party				$ 65,000
Loss Contingency Accrual, Ending Balance										65,000	$ 98,961
Jules and Associates, Inc. [Member] | Alleged Past Due Amounts Under Lease [Member]
Loss Contingency, Damages Sought, Value									$ 98,244.55
Litigation Settlement, Amount Awarded to Other Party										90,000
Loss Contingency Accrual, Ending Balance										75,000
Litigation Settlement, Expense										$ 15,000
Jules and Associates, Inc. [Member] | Alleged Past Due Amounts Under Lease [Member] | Forecast [Member]
Litigation Settlement, Expense	$ 25,000	$ 25,000	$ 25,000