Income (Loss) Per Share (Reconciliation Between Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income (Loss) Per Share [Abstract]
Income (loss) from continuing operations before discontinued operations	$ 1,156	$ (2,974)	$ 3,082
Loss from discontinued operations, net of income taxes	(128)	(1,770)	(965)
Loss on sale of discontinued operations	(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 - weighted shares outstanding	6,852	6,497	5,907
Weighted shares assumed upon exercise of stock options	455		334
Diluted - weighted shares outstanding	7,307	6,497	6,241
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
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