Significant Changes Due To Topic 606 (Summary of the Effects of Adoption of ASC Topic 606 on the Company's unaudited Consolidated Statements of Operations) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Sales, net	$ 30,134	$ 25,061	$ 85,657	$ 68,800
Cost of sales	20,609	17,334	57,731	48,600
Gross profit	9,525	7,727	27,926	20,200
Operating expenses:
Sales and marketing	3,009	2,342	8,729	6,857
General and administrative	3,232	2,698	9,434	7,961
Research and development	1,251	1,047	3,693	3,312
Total operating expenses	7,492	6,087	21,856	18,130
Operating income	2,033	1,640	6,070	2,070
Interest expense, net	(48)	(177)	(453)	(548)
Other income	(179)	(337)	(580)	(328)
Income from continuing operations before income taxes and discontinued operations	1,806	1,126	5,037	1,194
Income tax expense (benefit)	(97)	47	358	165
Income from continuing operations before discontinued operations	1,903	1,079	4,679	1,029
Loss on sale of discontinued operations (Note 3)				(164)
Loss from discontinued operations (Note 3)				(128)
Net income	1,903	1,079	4,679	737
Less: Loss allocated to non-controlling interest		(186)		(925)
Net income attributable to IntriCon shareholders	$ 1,903	$ 1,265	$ 4,679	$ 1,662
Basic income (loss) per share attributable to IntriCon shareholders:
Continuing operations	$ 0.24	$ 0.18	$ 0.65	$ 0.29
Discontinued operations				(0.04)
Net income per share:	0.24	0.18	0.65	0.24
Diluted income (loss) per share attributable to IntriCon shareholders:
Continuing operations	0.22	0.17	0.56	0.27
Discontinued operations				(0.04)
Net income per share:	$ 0.22	$ 0.17	$ 0.56	$ 0.23
Average shares outstanding:
Basic	7,825	6,853	7,249	6,836
Diluted	8,822	7,251	8,360	7,179
Accounting Standards Update 2014-09 [Member]
Sales, net		$ 25,061		$ 68,800
Cost of sales		17,334		48,600
Gross profit		7,727		20,200
Operating expenses:
Sales and marketing		2,342		6,857
General and administrative		2,698		7,961
Research and development		1,047		3,312
Total operating expenses		6,087		18,130
Operating income		1,640		2,070
Interest expense, net		(177)		(548)
Other income		(337)		(328)
Income from continuing operations before income taxes and discontinued operations		1,126		1,194
Income tax expense (benefit)		47		165
Income from continuing operations before discontinued operations		1,079		1,029
Loss on sale of discontinued operations (Note 3)				(164)
Loss from discontinued operations (Note 3)				(128)
Net income		1,079		737
Less: Loss allocated to non-controlling interest		(186)		(925)
Net income attributable to IntriCon shareholders		$ 1,265		$ 1,662
Basic income (loss) per share attributable to IntriCon shareholders:
Continuing operations		$ 0.18		$ 0.29
Discontinued operations				(0.04)
Net income per share:		0.18		0.24
Diluted income (loss) per share attributable to IntriCon shareholders:
Continuing operations		0.17		0.27
Discontinued operations				(0.04)
Net income per share:		$ 0.17		$ 0.23
Average shares outstanding:
Basic		6,853		6,836
Diluted		7,251		7,179
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Sales, net		$ 1,027		$ 2,717
Cost of sales		865		2,339
Gross profit		162		378
Operating expenses:
Operating income		162		378
Income from continuing operations before income taxes and discontinued operations		162		378
Income from continuing operations before discontinued operations		162		378
Net income		162		378
Net income attributable to IntriCon shareholders		$ 162		$ 378
Basic income (loss) per share attributable to IntriCon shareholders:
Continuing operations		$ 0.02		$ 0.06
Net income per share:		0.02		0.06
Diluted income (loss) per share attributable to IntriCon shareholders:
Continuing operations		0.02		0.05
Net income per share:		$ 0.02		$ 0.05
Average shares outstanding:
Basic		6,853		6,836
Diluted		7,251		7,179
Accounting Standards Update 2014-09 [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Sales, net		$ 24,034		$ 66,083
Cost of sales		16,469		46,261
Gross profit		7,565		19,822
Operating expenses:
Sales and marketing		2,342		6,857
General and administrative		2,698		7,961
Research and development		1,047		3,312
Total operating expenses		6,087		18,130
Operating income		1,478		1,692
Interest expense, net		(177)		(548)
Other income		(337)		(328)
Income from continuing operations before income taxes and discontinued operations		964		816
Income tax expense (benefit)		47		165
Income from continuing operations before discontinued operations		917		651
Loss on sale of discontinued operations (Note 3)				(164)
Loss from discontinued operations (Note 3)				(128)
Net income		917		359
Less: Loss allocated to non-controlling interest		(186)		(925)
Net income attributable to IntriCon shareholders		$ 1,103		$ 1,284
Basic income (loss) per share attributable to IntriCon shareholders:
Continuing operations		$ 0.16		$ 0.23
Discontinued operations				(0.04)
Net income per share:		0.16		0.19
Diluted income (loss) per share attributable to IntriCon shareholders:
Continuing operations		0.15		0.22
Discontinued operations				(0.04)
Net income per share:		$ 0.15		$ 0.18
Average shares outstanding:
Basic		6,853		6,836
Diluted		7,251		7,179