Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2021	Feb. 28, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	This Amendment No. 1 on Form 10-K/A (this “Form 10-K Amendment”) amends the Annual Report on Form 10-K for the fiscal year ended December 31, 2021 of Intricon Corporation (the “Company,” “Intricon,” “we,” “our,” or “us”), originally filed with the U.S. Securities and Exchange Commission (“SEC”) on March 7, 2022 (the “Original Report”). The purpose of this Form 10-K Amendment is to include the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from the Original Report in reliance on General Instruction G(3) to Form 10-K. We are filing this Form 10-K Amendment to present the information required by Part III of Form 10-K because we will not file our definitive proxy statement within 120 days of the end of our fiscal year ended December 31, 2021.
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	1-5005
Entity Registrant Name	INTRICON CORP
Entity Central Index Key	0000088790
Entity Tax Identification Number	23-1069060
Entity Incorporation, State or Country Code	PA
Entity Address, Address Line One	1260 Red Fox Road
Entity Address, City or Town	Arden Hills
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55112
City Area Code	651
Local Phone Number	636-9770
Title of 12(b) Security	Common stock, par value $1.00 per share
Trading Symbol	IIN
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	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 192,803,317
Entity Common Stock, Shares Outstanding		9,272,840
ICFR Auditor Attestation Flag	true
Auditor Name	Deloitte & Touche LLP
Auditor Location	Minneapolis, Minnesota
Auditor Firm ID	34

INTRICON CORP 10-K/A