Commitments and Contingencies (Narrative) (Details) R$ in Thousands, $ in Thousands	12 Months Ended			65 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	May 15, 2017	Dec. 31, 2019 BRL (R$)	Dec. 31, 2018 BRL (R$)
Short-term Debt [Line Items]
Environmental remediation accrued undiscounted liability	$ 82	$ 111
Loss recoveries and insurance gain contingencies			$ 1,644
Product warranty and recall accrual	3,111	3,283
Cash proceeds related to damaged inventory and incremental costs		241	500
Cash proceeds within cash flows from investing activities		1,403	711
Cost of Goods Sold [Member]
Short-term Debt [Line Items]
Insurance recoveries			189
Selling, General and Administrative Expenses [Member]
Short-term Debt [Line Items]
Insurance recoveries	0	0	$ 1,923
Gain on litigation	6,473
Interest Income [Member]
Short-term Debt [Line Items]
Gain on litigation	2,392
Professional Fees [Member]
Short-term Debt [Line Items]
Gain on litigation	990
Letter of Credit [Member]
Short-term Debt [Line Items]
Line of credit	1,489
Stoneridge Brazil [Member]
Short-term Debt [Line Items]
Percentage ownership in consolidated subsidiary				74.00%
Stoneridge Brazil [Member] | Civil, labor and other tax contingencies [Member]
Short-term Debt [Line Items]
Loss contingency, estimate of possible loss	$ 7,300	$ 7,600			R$ 29,200	R$ 29,700