Unaudited Quarterly Financial Data (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																9 Months Ended	12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net sales	$ 154,641		$ 162,057		$ 165,289		$ 162,825		$ 166,811		$ 170,338		$ 162,099		$ 161,331			$ 644,812	$ 660,579	$ 659,486
Gross profit	42,239		45,145		45,946		43,648		44,901		49,550		48,285		48,138
Operating income (loss)	8,327		8,947		7,415		3,126		(22,795)		13,759		(23,221)		6,434			27,815	(25,823)	42,403
Provision (benefit) for income taxes	(345)		32		(381)		147		(1,066)		(1,174)		90		294			(547)	(1,856)	2,797
Income (loss) from continuing operations	4,935		7,411		6,328		2,103		(31,306)	[1]	9,138	[1]	(28,569)	[1]	(467)	[1]		20,777	(51,204)	20,529
Income (loss) from discontinued operations	16	[2]	(113)	[2]	55	[2]	(168)	[2]	(1,692)	[2]	(8,108)	[2]	(544)	[2]	957	[2]		(210)	(9,387)	(4,021)
Net income (loss)	4,951		7,298		6,383		1,935		(32,998)	[2],[3]	1,030	[2],[3]	(29,113)	[2],[3]	490	[2],[3]		20,567	(60,591)	16,508
Less: income (loss) attributable to noncontrolling interest	(1,133)		(69)		(596)		(409)		(6,444)	[3]	1,160	[3]	(7,221)	[3]	(978)	[3]		(2,207)	(13,483)	1,377
Net income (loss) attributable to Stoneridge, Inc.	$ 6,084		$ 7,367		$ 6,979		$ 2,344		$ (26,554)	[1],[3]	$ (130)	[1],[3]	$ (21,892)	[1],[3]	$ 1,468	[1],[3]		$ 22,774	$ (47,108)	$ 15,131
Earnings (loss) per share attributable to continuing operations attributable to Stoneridge, Inc.:
Basic (in dollars per share)	$ 0.22	[4]	$ 0.27	[4]	$ 0.26	[4]	$ 0.10	[4]	$ (0.92)	[4]	$ 0.30	[4]	$ (0.79)	[4]	$ 0.02	[4]		$ 0.84	$ (1.40)	$ 0.72
Diluted (in dollars per share)	0.22	[4]	0.27	[4]	0.25	[4]	0.09	[4]	(0.92)	[4]	0.29	[4]	(0.79)	[4]	0.02	[4]		0.82	(1.40)	0.70
Earnings (loss) per share attributable to discontinued operations:
Basic (in dollars per share)	0.00	[4]	(0.01)	[4]	0.00	[4]	(0.01)	[4]	(0.07)	[4]	(0.30)	[4]	(0.02)	[4]	0.03	[4]		(0.01)	(0.35)	(0.15)
Diluted (in dollars per share)	0.00	[4]	(0.01)	[4]	0.00	[4]	(0.01)	[4]	(0.07)	[4]	(0.29)	[4]	(0.02)	[4]	0.03	[4]		(0.01)	(0.35)	(0.14)
Earnings (loss) per share attributable to Stoneridge, Inc.:
Basic (in dollars per share)	0.22	[4]	0.26	[4]	0.26	[4]	0.09	[4]	(0.99)	[4]	0.00	[4]	(0.81)	[4]	0.05	[4]		0.83	(1.75)	0.57
Diluted (in dollars per share)	$ 0.22	[4]	$ 0.26	[4]	$ 0.25	[4]	$ 0.08	[4]	$ (0.99)	[4]	$ 0.00	[4]	$ (0.81)	[4]	$ 0.05	[4]		$ 0.81	$ (1.75)	$ 0.56
Goodwill impairment charge (benefit)																			$ 51,458
Goodwill impairment loss (gain) attributable to noncontrolling interest									$ 6,142
(Loss) on early extinguishment of debt									(9,687)		$ (920)								(10,607)
Loss on disposal, net of tax	$ 16		$ (113)		$ 55		$ (168)		(890)		(6,548)		$ (1,138)					$ (210)	(8,576)
PST [Member]
Earnings (loss) per share attributable to Stoneridge, Inc.:
Goodwill impairment charge (benefit)									27,960		(5,802)		29,300				$ 23,498		51,458
Goodwill impairment loss (gain) attributable to noncontrolling interest									$ 6,142		$ (1,274)		$ 6,436				$ 5,162		$ 11,304

[1] In addition to the PST goodwill impairment amounts in item (B) herein, a loss on early extinguishment of debt of $920 and $9,687 was recorded for the quarters ended September 30, 2014 and December 31, 2014, respectively.

[2] A gain (loss) on disposal of the Wiring business was recorded for $(168), $55, $(113) and $16 for the quarters ended March 31, 2015, June 30, 2015, September 30, 2015 and December 31, 2015, respectively. In addition, a loss on disposal of the Wiring business was recorded for $1,138, $6,548 and $890 for the quarters ended June 30, 2014, September 30, 2014 and December 31, 2014, respectively.

[3] Goodwill impairment charge (benefit) of $29,300, $(5,802), and $27,960 related to the PST segment was recorded for the quarters ended June 30, 2014, September 30, 2014 and December 31, 2014, respectively, of which $6,436, $(1,274) and $6,142, respectively, was attributable to noncontrolling interest.

[4] Earnings per share for the year may not equal the sum of the four historical quarters earnings per share due to changes in weighted-average basic and diluted shares outstanding.