Segment Reporting (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Net Sales:
Net sales	$ 193,795	$ 182,966
Operating Income (Loss)
Total operating income (loss)	2,059	3,659
Total income before income taxes	549	4,703
Depreciation and Amortization:
Total depreciation and amortization	8,581	7,987
Interest Expense, net:
Total interest expense, net	1,766	1,030
Interest Expense, net:
Total interest expense, net	1,766	1,030
Capital Expenditures:
Capital expenditures	5,974	6,669
Long-Lived Assets	278,371		$ 286,744
Total Assets:
Total assets	621,477		621,408
Intersegment Eliminations [Member]
Net Sales:
Net sales	(7,959)	(9,615)
Total Assets:
Total assets	(327,795)		(329,140)
Control Devices [Member]
Net Sales:
Net sales	99,618	96,850
Operating Income (Loss)
Total operating income (loss)	10,165	7,322
Depreciation and Amortization:
Total depreciation and amortization	4,079	3,530
Interest Expense, net:
Total interest expense, net	132	81
Capital Expenditures:
Capital expenditures	1,361	2,314
Total Assets:
Total assets	200,062		194,433
Control Devices [Member] | Operating Segments [Member]
Net Sales:
Net sales	101,598	98,197
Control Devices [Member] | Inter-Segment Sales [Member]
Net Sales:
Net sales	1,980	1,347
Electronics [Member]
Net Sales:
Net sales	82,770	71,546
Operating Income (Loss)
Total operating income (loss)	(873)	2,872
Depreciation and Amortization:
Total depreciation and amortization	2,809	2,481
Interest Expense, net:
Total interest expense, net	131	87
Capital Expenditures:
Capital expenditures	3,450	2,650
Total Assets:
Total assets	304,539		303,914
Electronics [Member] | Operating Segments [Member]
Net Sales:
Net sales	88,749	79,814
Electronics [Member] | Inter-Segment Sales [Member]
Net Sales:
Net sales	5,979	8,268
Stoneridge Brazil [Member]
Net Sales:
Net sales	11,407	14,570
Operating Income (Loss)
Total operating income (loss)	(48)	859
Depreciation and Amortization:
Total depreciation and amortization	1,004	1,450
Interest Expense, net:
Total interest expense, net	(30)	10
Capital Expenditures:
Capital expenditures	662	1,133
Total Assets:
Total assets	55,261		61,350
Stoneridge Brazil [Member] | Operating Segments [Member]
Net Sales:
Net sales	11,407	14,570
Unallocated Corporate [Member]
Operating Income (Loss)
Total operating income (loss)	(7,185)	(7,394)
Depreciation and Amortization:
Total depreciation and amortization	689	526
Interest Expense, net:
Total interest expense, net	1,533	852
Capital Expenditures:
Capital expenditures	501	$ 572
Total Assets:
Total assets	$ 389,410		$ 390,851