CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Other Comprehensive Income [Abstract]
Net income				$ 49,421	$ 28,500
Net income		$ 39,764	$ 15,120	49,421	28,500
Other comprehensive (loss) income, net of tax attributable to Stoneridge, Inc.:
Foreign currency translation		2,311	(17,421)	(1,493)	(13,527)
Unrealized (loss) gain on derivatives	[1]	(112)	(159)	(70)	636
Other comprehensive (loss) income, net of tax attributable to Stoneridge, Inc.		2,199	(17,580)	(1,563)	(12,891)
Comprehensive income attributable to Stoneridge, Inc.		$ 41,963	$ (2,460)	$ 47,858	$ 15,609

[1] Net of tax benefit of $(30) and $(41) for the three months ended June 30, 2019 and 2018, respectively. Net of tax expense (benefit) of $(19) and $171 for the six months ended June 30, 2019 and 2018, respectively.