Statements of Consolidated Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Common Shares Issued to Rabbi Trust [Member]	Deferred Compensation Liability [Member]	Paid In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Cumulative Translation Adjustment [Member]	Unrecognized Pension Benefit Cost [Member]	Total Preformed Line Products, Company Equity [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2020	$ 292,069	$ 13,028	$ (10,940)	$ 10,940	$ 43,134	$ 379,035	$ (88,568)	$ (47,847)	$ (6,704)	$ 292,078	$ (9)
Net income	35,721					35,729				35,729	(8)
Foreign currency translation adjustment	(8,376)							(8,376)		(8,376)
Pension adjustment, net of tax	1,208								1,208	1,208
Total comprehensive income	28,553									28,561	(8)
Share-based compensation	3,997				4,163	(166)				3,997
Purchase of common shares	(5,268)						(5,268)			(5,268)
Issuance of common shares	674	157			517					674
Common shares distributed from rabbi trust of net			838	(838)
Cash dividends declared	(3,925)					(3,925)				(3,925)
Ending Balance at Dec. 31, 2021	316,100	13,185	(10,102)	10,102	47,814	410,673	(93,836)	(56,223)	(5,496)	316,117	(17)
Net income	54,399					54,395				54,395	4
Foreign currency translation adjustment	(9,272)							(9,272)		(9,272)
Pension adjustment, net of tax	1,004								1,004	1,004
Total comprehensive income	46,131									46,127	4
Share-based compensation	4,403				4,596	(193)				4,403
Purchase of common shares	(5,467)						(5,467)			(5,467)
Issuance of common shares	1,402	166			1,236					1,402
Common shares distributed from rabbi trust of net			(159)	159
Cash dividends declared	(3,945)					(3,945)				(3,945)
Ending Balance at Dec. 31, 2022	358,624	13,351	(10,261)	10,261	53,646	460,930	(99,303)	(65,495)	(4,492)	358,637	(13)
Net income	63,337					63,332				63,332	5
Foreign currency translation adjustment	9,667							9,667		9,667
Pension adjustment, net of tax	14								14	14
Total comprehensive income	73,018									73,013	5
Share-based compensation	4,773				4,948	(175)				4,773
Purchase of common shares	(18,946)						(18,946)			(18,946)
Issuance of common shares	2,620	256			2,364					2,620
Common shares distributed from rabbi trust of net	0		78	(78)						0
Cash dividends declared	(3,933)					(3,933)				(3,933)
Ending Balance at Dec. 31, 2023	$ 416,156	$ 13,607	$ (10,183)	$ 10,183	$ 60,958	$ 520,154	$ (118,249)	$ (55,828)	$ (4,478)	$ 416,164	$ (8)