Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 31, 2021
Document Information [Line Items]
Entity Central Index Key	0000088790
Entity Registrant Name	INTRICON CORP
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	1-5005
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-1069060
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 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 Common Stock, Shares Outstanding		9,097,270