Segment Information - Summary of Company's Reportable Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales
Net sales	$ 669,679	$ 637,021	$ 517,417
Interest income
Interest income	1,811	631	169
Interest expense
Interest expense	(3,905)	(3,214)	(2,023)
Income taxes
Income taxes	19,007	19,305	13,175
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	63,332	54,395	35,729
Expenditure for long-lived assets
Expenditure for long-lived assets	35,332	40,598	18,384
Depreciation and amortization
Depreciation and amortization	18,914	16,430	15,564
Identifiable assets
Identifiable assets	603,151	568,479
Long-lived assets
Long-lived assets	207,892	175,011
PLP-USA [Member]
Net sales
Net sales	378,563	366,819	257,602
Interest income
Interest income	0	0	0
Interest expense
Interest expense	(1,991)	(1,138)	(665)
Income taxes
Income taxes	12,342	15,285	8,185
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	45,392	45,194	24,384
Expenditure for long-lived assets
Expenditure for long-lived assets	25,317	31,012	12,750
Depreciation and amortization
Depreciation and amortization	9,270	7,104	6,195
Identifiable assets
Identifiable assets	256,508	229,751
Long-lived assets
Long-lived assets	125,035	95,673
The Americas [Member]
Net sales
Net sales	86,059	85,200	70,732
Interest income
Interest income	1,615	534	138
Interest expense
Interest expense	(255)	(678)	(368)
Income taxes
Income taxes	3,022	3,218	3,250
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	5,755	11,420	8,351
Expenditure for long-lived assets
Expenditure for long-lived assets	4,861	3,702	1,289
Depreciation and amortization
Depreciation and amortization	2,702	2,452	1,855
Identifiable assets
Identifiable assets	111,056	108,560
Long-lived assets
Long-lived assets	24,618	20,539
EMEA [Member]
Net sales
Net sales	102,130	96,126	95,922
Interest income
Interest income	125	82	4
Interest expense
Interest expense	(899)	(664)	(309)
Income taxes
Income taxes	1,670	1,918	1,492
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	5,796	1,379	3,715
Expenditure for long-lived assets
Expenditure for long-lived assets	2,849	2,247	2,785
Depreciation and amortization
Depreciation and amortization	3,493	3,354	3,146
Identifiable assets
Identifiable assets	119,741	118,805
Long-lived assets
Long-lived assets	20,780	19,764
Asia-Pacific [Member]
Net sales
Net sales	102,927	88,876	93,161
Interest income
Interest income	71	15	27
Interest expense
Interest expense	(760)	(734)	(681)
Income taxes
Income taxes	1,973	(1,116)	248
Net income attributable to Preformed Line Products Company shareholders
Net income attributable to Preformed Line Products Company shareholders	6,389	(3,598)	(721)
Expenditure for long-lived assets
Expenditure for long-lived assets	2,305	3,637	1,560
Depreciation and amortization
Depreciation and amortization	3,449	3,520	4,368
Identifiable assets
Identifiable assets	115,846	111,363
Long-lived assets
Long-lived assets	37,459	39,035
Intersegment Eliminations [Member]
Net sales
Net sales	57,976	63,928	40,056
Intersegment Eliminations [Member] | PLP-USA [Member]
Net sales
Net sales	9,350	9,081	6,176
Intersegment Eliminations [Member] | The Americas [Member]
Net sales
Net sales	16,345	17,915	9,486
Intersegment Eliminations [Member] | EMEA [Member]
Net sales
Net sales	8,531	3,280	2,784
Intersegment Eliminations [Member] | Asia-Pacific [Member]
Net sales
Net sales	$ 23,750	$ 33,652	$ 21,610