Business Segment Information - Summary of Company's Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net sales
Net sales	$ 138,223	$ 117,553
Gross profit
Gross profit	41,951	40,192
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	12,285	7,179
PLP-USA [Member]
Net sales
Net sales	75,924	56,231
Gross profit
Gross profit	26,264	21,077
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	13,239	5,576
The Americas [Member]
Net sales
Net sales	18,963	17,521
Gross profit
Gross profit	5,365	5,544
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	(71)	1,192
EMEA [Member]
Net sales
Net sales	27,472	23,481
Gross profit
Gross profit	6,374	8,134
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	282	1,195
Asia-Pacific [Member]
Net sales
Net sales	15,864	20,320
Gross profit
Gross profit	3,948	5,437
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	(1,165)	(784)
Intersegment Eliminations [Member]
Net sales
Net sales	14,204	8,614
Intersegment Eliminations [Member] | PLP-USA [Member]
Net sales
Net sales	4,120	2,385
Intersegment Eliminations [Member] | The Americas [Member]
Net sales
Net sales	2,714	2,066
Intersegment Eliminations [Member] | EMEA [Member]
Net sales
Net sales	686	511
Intersegment Eliminations [Member] | Asia-Pacific [Member]
Net sales
Net sales	$ 6,684	$ 3,652