Financial Instruments and Fair Value Measurements (Summary of the change in fair value of the Level 3 financial liabilities related to earn-out consideration) (Details) - Earnout Consideration [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	$ 12,011	$ 18,672
Change in fair value	(3,045)	1,862
Foreign currency adjustments	(3,472)	(882)
Earn-out consideration cash payment		(8,474)
Financial liability, Ending balance	5,494	11,178
Orlaco [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance		8,602
Foreign currency adjustments		(128)
Earn-out consideration cash payment		(8,474)
Stoneridge Brazil [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	12,011	10,070
Change in fair value	(3,045)	1,862
Foreign currency adjustments	(3,472)	(754)
Financial liability, Ending balance	$ 5,494	$ 11,178