Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements of Operations [Abstract]
Sales, net	$ 88,310	$ 68,009	$ 68,527
Cost of sales	61,819	50,937	49,771
Gross profit	26,491	17,072	18,756
Operating expenses:
Sales and marketing	9,447	4,700	3,733
General and administrative	10,339	9,154	7,013
Research and development	4,458	4,688	4,279
Restructuring charges (Note 3)		132
Total operating expenses	24,244	18,674	15,025
Operating income (loss)	2,247	(1,602)	3,731
Interest expense	(716)	(553)	(369)
Other expense, net	(367)	(602)	(261)
Income (loss) from continuing operations before income taxes and discontinued operations	1,164	(2,757)	3,101
Income tax expense	8	217	19
Income (loss) from continuing operations before discontinued operations	1,156	(2,974)	3,082
Loss from discontinued operations and impairment, net of income taxes (Note 2)	(128)	(1,770)	(965)
Loss on sale of discontinued operations (Note 2)	(164)
Net income (loss)	864	(4,744)	2,117
Less: Loss allocated to non-controlling interest	(938)	(157)	(111)
Net income (loss) attributable to IntriCon shareholders	$ 1,802	$ (4,587)	$ 2,228
Basic income (loss) per share attributable to IntriCon shareholders:
Continuing operations	$ 0.31	$ (0.43)	$ 0.54
Discontinued operations	(0.04)	(0.27)	(0.16)
Net income (loss) per share:	0.26	(0.71)	0.38
Diluted income (loss) per share attributable to IntriCon shareholders:
Continuing operations	0.29	(0.43)	0.51
Discontinued operations	(0.04)	(0.27)	(0.15)
Net income (loss) per share:	$ 0.25	$ (0.71)	$ 0.36
Average shares outstanding:
Basic	6,852	6,497	5,907
Diluted	7,307	6,497	6,241