Preformed Line Products (PLPC) 10-Q 30 Oct 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 26, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Trading Symbol	PLPC
Entity Registrant Name	Preformed Line Products Company
Entity Central Index Key	0000080035
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		4,914,543
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	0-31164
Entity Tax Identification Number	34-0676895
Entity Address, Address Line One	660 Beta Drive
Entity Address, City or Town	Mayfield Village
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44143
City Area Code	440
Local Phone Number	461-5200
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	Common stock, par value $2.00 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	OH
Entity Interactive Data Current	Yes

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 41,248	$ 38,929
Accounts receivable, less allowances of $3,536 ($3,849 in 2019)	96,712	83,517
Inventories - net	94,315	95,718
Prepaids	8,336	6,921
Prepaid taxes	2,794	2,601
Other current assets	2,517	4,289
TOTAL CURRENT ASSETS	245,922	231,975
Property, plant and equipment - net	134,440	124,018
Operating lease, right-of-use assets	12,762	12,453
Intangibles - net	13,926	15,116
Goodwill	27,689	27,840
Deferred income taxes	6,515	7,564
Other assets	10,787	14,605
TOTAL ASSETS	452,041	433,571
LIABILITIES AND SHAREHOLDERS’ EQUITY
Trade accounts payable	30,299	28,282
Notes payable to banks	15,582	8,696
Operating lease liabilities, current	2,214	2,062
Current portion of long-term debt	7,198	3,354
Accrued compensation and amounts withheld from employees	17,764	11,817
Accrued expenses and other liabilities	14,931	16,718
Accrued profit-sharing and other benefits	6,484	7,213
Dividends payable	1,256	1,173
Income taxes payable	2,467	1,758
TOTAL CURRENT LIABILITIES	98,195	81,073
Long-term debt, less current portion	45,220	53,722
Unfunded pension obligation	4,384	5,278
Operating lease liabilities, non-current	8,528	8,246
Deferred income taxes	2,890	3,116
Other noncurrent liabilities	13,246	13,568
Shareholders’ equity:
Common shares - $2 par value per share, 15,000,000 shares authorized, 4,914,543 and 4,992,979 issued and outstanding, at September 30, 2020 and December 31, 2019, respectively	13,013	12,848
Common shares issued to rabbi trust, 265,508 and 267,641 shares at September 30, 2020 and December 31, 2019, respectively	(10,940)	(10,981)
Deferred compensation liability	10,940	10,981
Paid-in capital	42,047	38,854
Retained earnings	377,384	353,292
Treasury shares, at cost, 1,592,027 and 1,431,235 shares at September 30, 2020 and December 31, 2019, respectively	(87,320)	(79,106)
Accumulated other comprehensive loss	(65,549)	(57,353)
TOTAL PREFORMED LINE PRODUCTS, COMPANY SHAREHOLDERS’ EQUITY	279,575	268,535
Noncontrolling interest	3	33
TOTAL SHAREHOLDERS’ EQUITY	279,578	268,568
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 452,041	$ 433,571

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Accounts receivable, less allowances	$ 3,536	$ 3,849
Common stock, par value	$ 2	$ 2
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	4,914,543	4,992,979
Common stock, shares outstanding	4,914,543	4,992,979
Common stock, shares issued to rabbi trust	265,508	267,641
Treasury stock shares	1,592,027	1,431,235

Statements of Consolidated Inco

Statements of Consolidated Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 127,463	$ 119,217	$ 347,944	$ 331,212
Cost of products sold	82,549	79,874	230,554	226,798
GROSS PROFIT	44,914	39,343	117,390	104,414
Costs and expenses
Selling	8,884	9,410	26,228	26,868
General and administrative	14,037	13,275	39,903	38,486
Research and engineering	4,541	4,240	12,950	12,809
Other operating expense - net	562	775	1,969	1,447
Total costs and expenses	28,024	27,700	81,050	79,610
OPERATING INCOME	16,890	11,643	36,340	24,804
Other income (expense)
Interest income	36	211	226	613
Interest expense	(504)	(735)	(1,932)	(1,688)
Other income (expense) - net	998	138	1,775	306
Total other income (expense)	530	(386)	69	(769)
INCOME BEFORE INCOME TAXES	17,420	11,257	36,409	24,035
Income tax expense	4,458	3,213	9,306	6,302
NET INCOME	12,962	8,044	27,103	17,733
Net income (loss) attributable to noncontrolling interests	(8)	(93)	30	(54)
NET INCOME ATTRIBUTABLE TO PREFORMED LINE PRODUCTS COMPANY SHAREHOLDERS	$ 12,954	$ 7,951	$ 27,133	$ 17,679
AVERAGE NUMBER OF SHARES OF COMMON STOCK OUTSTANDING:
Basic	4,917	5,024	4,963	5,039
Diluted	5,011	5,119	4,998	5,077
EARNINGS PER SHARE OF COMMON STOCK ATTRIBUTABLE TO PREFORMED LINE PRODUCTS COMPANY SHAREHOLDERS:
Basic	$ 2.63	$ 1.58	$ 5.47	$ 3.51
Diluted	$ 2.59	$ 1.55	$ 5.43	$ 3.48

Statements of Consolidated Comp

Statements of Consolidated Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Comprehensive Income Net Of Tax [Abstract]
Net income	$ 12,962	$ 8,044	$ 27,103	$ 17,733
Other comprehensive income (loss), net of tax
Foreign currency translation adjustment	2,949	(5,897)	(8,460)	(3,444)
Recognized net actuarial gain (net of tax provision of $23 and $32 for the three months ended September 30, 2020 and 2019, respectively). Recognized net actuarial gain (net of tax provision of $84 and $95 for the nine months ended September 30, 2020 and 2019, respectively).	75	108	264	294
Other comprehensive (income) loss, net of tax	3,024	(5,789)	(8,196)	(3,150)
Comprehensive (income) loss attributable to noncontrolling interests	(8)	(93)	30	(54)
Comprehensive income attributable to Preformed Line Products Company shareholders	$ 15,978	$ 2,162	$ 18,937	$ 14,529

Statements of Consolidated Co_2

Statements of Consolidated Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Comprehensive Income Net Of Tax [Abstract]
Net of tax provision on recognized net actuarial gain	$ 23	$ 32	$ 84	$ 95

Statements of Consolidated Cash

Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
OPERATING ACTIVITIES
Net income		$ 27,103	$ 17,733
Adjustments to reconcile net income to net cash provided by (used in) operations:
Depreciation and amortization		10,080	9,844
Provision for accounts receivable allowances		1,374	1,327
Provision for inventory reserves		1,718	1,288
Deferred income taxes		1,064	(1,503)
Share-based compensation expense		3,046	3,344
Gain (loss) on sale of property and equipment		15	(47)
Other - net		(9)	(35)
Changes in operating assets and liabilities
Accounts receivable		(17,620)	(12,865)
Inventories		(27)	(6,891)
Trade accounts payable and accrued liabilities		9,555	11,591
Income taxes - net		864	1,880
Contributions to company pension plan		(330)	0
Other - net		(3,276)	(4,997)
NET CASH PROVIDED BY OPERATING ACTIVITIES		33,557	20,669
INVESTING ACTIVITIES
Capital expenditures		(24,219)	(21,950)
Proceeds from the sale of property and equipment		0	48
Purchase of marketable securities		0	(496)
Proceeds from marketable securities		0	2,309
Purchase of company owned life insurance policy		0	(2,309)
Acquisition, net of cash acquired		0	(18,894)
NET CASH USED IN INVESTING ACTIVITIES		(24,219)	(41,292)
FINANCING ACTIVITIES
Increase (decrease) in notes payable to banks		8,642	(1,478)
Proceeds from long-term debt		68,789	70,730
Payments of long-term debt		(72,693)	(41,578)
Dividends paid		(3,188)	(3,226)
Proceeds from issuance of common shares		174	29
Purchase of common shares for treasury		(5,832)	(2,397)
Purchase of common shares for treasury from related parties		(2,378)	(2,104)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES		(6,486)	19,976
Effects of exchange rate changes on cash and cash equivalents		(867)	(1,778)
Net increase (decrease) in cash, cash equivalents and restricted cash		1,985	(2,425)
Cash, cash equivalents and restricted cash at beginning of year		39,263	43,910
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	[1]	$ 41,248	$ 41,485
[1]	Includes no restricted cash at September 30, 2020 and $.3 million at December 31, 2019.  For further information regarding restricted cash, refer to Note P, “Debt Arrangements.”

Statements of Consolidated Ca_2

Statements of Consolidated Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Asia Pacific [Member]
Restricted cash	$ 0	$ 3

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	NOTE A – BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements of Preformed Line Products Company and subsidiaries (the “Company” or “PLPC”) have been prepared in accordance with United States of America (U.S.) generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. The preparation of these consolidated financial statements requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and the accompanying notes. Actual results could differ from these estimates. In the opinion of management, these consolidated financial statements contain all estimates and adjustments, consisting of normal recurring accruals, required to fairly present the financial position, results of operations, and cash flows for the interim periods. Operating results for the three and nine months ended September 30, 2020 are not necessarily indicative of the results to be expected for the full-year ending December 31, 2020. Noncontrolling interests are presented in the Company’s consolidated financial statements as if parent company investors (controlling interests) and other minority investors (noncontrolling interests) in partially-owned subsidiaries have similar economic interests in a single entity. As a result, investments in noncontrolling interests are reported as equity in the Company’s consolidated financial statements. Additionally, the Company’s consolidated financial statements include 100% of a controlled subsidiary’s earnings, rather than only its share. Transactions between the parent company and noncontrolling interests are reported in equity as transactions between stockholders, provided that these transactions do not create a change in control. The Consolidated Balance Sheet at December 31, 2019 has been derived from the audited consolidated financial statements but does not include all of the information and notes required by U.S. GAAP for complete financial statements. For further information, refer to the consolidated financial statements and notes to consolidated financial statements included in the Company’s 2019 Annual Report on Form 10-K filed on March 6, 2020 with the Securities and Exchange Commission.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Revenue	NOTE B – REVENUE Revenue recognition Net sales include products and shipping and handling charges, net of estimates for product returns. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products. All revenue is recognized when the Company satisfies the performance obligations under the contract and control of the product is transferred to the customer, primarily based on shipping terms. Revenue for shipping and handling charges are recognized at the time the products are shipped to, delivered to or picked up by the customer. The Company estimates product returns based on historical return rates. Disaggregated revenue The Company’s revenues by segment and product type are as follows: Three Months Ended September 30, 2020 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 60 % 80 % 59 % 60 % 63 % Communications 34 16 35 4 25 Special Industries 6 4 6 36 12 Total 100 % 100 % 100 % 100 % 100 % Three Months Ended September 30, 2019 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 63 % 72 % 54 % 75 % 66 % Communications 29 26 34 5 23 Special Industries 8 2 12 20 11 Total 100 % 100 % 100 % 100 % 100 % Nine Months Ended September 30, 2020 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 63 % 78 % 58 % 69 % 66 % Communications 31 17 35 4 24 Special Industries 6 5 7 27 10 Total 100 % 100 % 100 % 100 % 100 % Nine Months Ended September 30, 2019 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 63 % 67 % 59 % 68 % 64 % Communications 30 29 27 7 24 Special Industries 7 4 14 25 12 Total 100 % 100 % 100 % 100 % 100 %

Other Financial Statement Infor

Other Financial Statement Information	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Other Financial Statement Information	NOTE C – OTHER FINANCIAL STATEMENT INFORMATION Inventories – net September 30, 2020 December 31, 2019 Raw materials $ 52,779 $ 49,729 Work-in-process 9,330 9,352 Finished Goods 37,015 45,760 99,124 104,841 Excess of current cost over LIFO cost (4,809 ) (4,667 ) Noncurrent portion of inventory 0 (4,456 ) $ 94,315 $ 95,718 Cost of inventories for certain material is determined using the last-in-first-out (LIFO) method and totaled approximately $31.1 million at September 30, 2020 and $32.0 million at December 31, 2019. An actual valuation of inventories under the LIFO method can be made only at the end of the year based on the inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs. Because these estimates are subject to change and may be different than the actual inventory levels and costs at the end of the year, interim results are subject to the final year-end LIFO inventory valuation. During the three and nine-month periods ended September 30, 2020, the net change in LIFO inventories resulted in $.1 million of income and $.1 million of expense, respectively, to Income before income taxes. During the three and nine-month periods ended September 30, 2019, the net change in LIFO inventories resulted in $.1 million and $.5 million, respectively, of expense to Income before income taxes. Noncurrent inventory is included in Other assets on the Company’s Consolidated Balance Sheets. Property, plant and equipment—net Major classes of Property, plant and equipment are stated at cost and were as follows: September 30, 2020 December 31, 2019 Land and improvements $ 21,168 $ 22,218 Buildings and improvements 83,480 82,811 Machinery, equipment and aircraft 187,372 180,221 Construction in progress 17,770 9,460 309,790 294,710 Less accumulated depreciation (175,350 ) (170,692 ) $ 134,440 $ 124,018 Legal proceedings The Company can be party to a variety of pending legal proceedings and claims arising in the normal course of business, including, but not limited to, litigation relating to employment, workers’ compensation, product liability, environmental and intellectual property. The Company has liability insurance to cover many of these claims. Although the outcomes of these matters are not predictable with certainty, the Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. In the event the Company determines that a loss is not probable, but is reasonably possible, and the likelihood to develop what the Company believes to be a reasonable range of potential loss exists, the Company will include disclosure related to such matters. To the extent that there is a reasonable possibility the losses could exceed amounts already accrued, the Company will adjust the accrual in the period in which the determination is made, disclose an estimate of the additional loss or range of loss and if the amount of such adjustment cannot be reasonably estimated, disclose that an estimate cannot be made. The Company and its subsidiaries Helix Uniformed Ltd. (“Helix”) and Preformed Line Products (Canada) Limited (“PLPC Canada”), were each named, jointly and severally, with each of SNC-Lavalin ATP, Inc. (“SNC ATP”), HD Supply Canada Inc., by its trade names HD Supply Power Solutions and HD Supply Utilities (“HD Supply”), and Anixter Power Solutions Canada Inc. (the corporate successor to HD Supply), “Anixter” and, together with the Company, PLPC Canada, Helix, SNC ATP and HD Supply, the (“Defendants”) in a complaint filed by Altalink, L.P. (the “Plaintiff”) in the Court of Queen’s Bench of Alberta in Alberta, Canada in November 2016 (the “Complaint”). The Complaint states that Plaintiff engaged SNC ATP to design, engineer, procure and construct numerous power distribution and transmission facilities in Alberta (the “Projects”) and that through SNC ATP and HD Supply (now Anixter), spacer dampers manufactured by Helix were procured and installed in the Projects. The Complaint alleges that the spacer dampers have and may continue to become loose, open and detach from the conductors, resulting in damage and potential injury and a failure to perform the intended function of providing spacing and damping to the Project. The Plaintiffs were initially seeking an estimated $56.0 million Canadian dollars in damages jointly and severally from the Defendants, representing the costs of monitoring and replacing the spacer dampers and remediating property damage, due to alleged defects in the design and construction of, and supply of materials for, the Projects by SNC ATP and HD Supply/Anixter and in the design of the spacer dampers by Helix. The Plaintiffs reduced their demand for damages to $29.4 million Canadian dollars on June 1, 2018. The Company believes the claims against it are without merit and intends to vigorously defend against such claims. The Company is unable to predict the outcome of this case and cannot reasonably estimate a potential range of loss. However, if it is to be determined to be adverse to the Company, it could have a material effect on the Company’s financial results. The Company is not a party to any other pending legal proceedings that the Company believes would, individually or in the aggregate, have a material adverse effect on its financial condition, results of operations or cash flows.

Shareholders Equity

Shareholders Equity	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Shareholders Equity	NOTE D – SHAREHOLDERS EQUITY The following table reflects the changes in shareholders equity for the three and nine months ended September 30, 2020 and 2019: Accumulated Other Comprehensive Income (Loss) Common Shares Common Shares Issued to Rabbi Trust Deferred Compensation Liability Paid in Capital Retained Earnings Treasury Shares Cumulative Translation Adjustment Unrecognized Pension Benefit Cost Total Preformed Line Products Company Equity Noncontrolling Interests Total Equity (In thousands, except share and per share data) Balance at December 31, 2019 $ 12,848 $ (10,981 ) $ 10,981 $ 38,854 $ 353,292 $ (79,106 ) $ (51,682 ) $ (5,671 ) $ 268,535 $ 33 $ 268,568 Net income (loss) 3,698 3,698 (45 ) 3,653 Foreign currency translation adjustment (16,881 ) (16,881 ) (16,881 ) Recognized net actuarial gain, net of tax provision of $31 98 98 98 Total comprehensive income (13,085 ) (45 ) (13,130 ) Share-based compensation 976 (43 ) 933 933 Purchase of 75,246 common shares (3,980 ) (3,980 ) (3,980 ) Issuance of 77,381 common shares 155 155 155 Common shares distributed from rabbi trust of 3,358, net 101 (101 ) 0 0 Cash dividends declared - $.20 per share (83 ) (963 ) (1,046 ) (1,046 ) Balance at March 31, 2020 $ 13,003 $ (10,880 ) $ 10,880 $ 39,747 $ 355,984 $ (83,086 ) $ (68,563 ) $ (5,573 ) $ 251,512 $ (12 ) $ 251,500 Net income 10,481 10,481 7 10,488 Foreign currency translation adjustment 5,472 5,472 5,472 Recognized net actuarial gain, net of tax provision of $39 91 91 91 Total comprehensive income 16,044 7 16,051 Share-based compensation 612 (26 ) 586 586 Purchase of 60,608 common shares (3,011 ) (3,011 ) (3,011 ) Issuance of 603 common shares 26 26 26 Common shares issued to rabbi trust of 603, net (30 ) 30 0 0 Cash dividends declared - $.20 per share (996 ) (996 ) (996 ) Balance at June 30, 2020 $ 13,003 $ (10,910 ) $ 10,910 $ 40,385 $ 365,443 $ (86,097 ) $ (63,091 ) $ (5,482 ) $ 264,161 $ (5 ) $ 264,156 Net income 12,954 12,954 8 12,962 Foreign currency translation adjustment 2,949 2,949 2,949 Recognized net actuarial gain, net of tax provision of $23 75 75 75 Total comprehensive income 15,978 8 15,986 Share-based compensation 1,458 1,458 1,458 Purchase of 24,335 common shares (1,223 ) (1,223 ) (1,223 ) Issuance of 622 common shares 10 204 214 214 Common shares issued to rabbi trust of 622, net (30 ) 30 0 0 Cash dividends declared - $.20 per share (1,013 ) (1,013 ) (1,013 ) Balance at September 30, 2020 $ 13,013 $ (10,940 ) $ 10,940 $ 42,047 $ 377,384 $ (87,320 ) $ (60,142 ) $ (5,407 ) $ 279,575 $ 3 $ 279,578 Accumulated Other Comprehensive Income (Loss) Common Shares Common Shares Issued to Rabbi Trust Deferred Compensation Liability Paid in Capital Retained Earnings Treasury Shares Cumulative Translation Adjustment Unrecognized Pension Benefit Cost Total Preformed Line Products Company Equity Noncontrolling Interests Total Equity (In thousands, except share and per share data) Balance at December 31, 2018 $ 12,662 $ (11,008 ) $ 11,008 $ 34,401 $ 334,170 $ (72,280 ) $ (53,710 ) $ (5,873 ) $ 249,370 $ 0 $ 249,370 Net income 1,824 1,824 1,824 Foreign currency translation adjustment 1,353 1,353 1,353 Recognized net actuarial gain, net of tax provision of $32 93 93 93 Total comprehensive income 3,270 0 3,270 Share-based compensation 928 (36 ) 892 892 Purchase of 40,891 common shares (2,294 ) (2,294 ) (2,294 ) Issuance of 78,821 common shares 159 (18 ) 141 141 Common shares issued to rabbi trust of 705, net (30 ) 30 0 0 Cash dividends declared - $.20 per share (165 ) (1,011 ) (1,176 ) (1,176 ) Balance at March 31, 2019 $ 12,821 $ (11,038 ) $ 11,038 $ 35,146 $ 334,947 $ (74,574 ) $ (52,357 ) $ (5,780 ) $ 250,203 $ 0 $ 250,203 Net income 7,904 7,904 (39 ) 7,865 Foreign currency translation adjustment 1,100 1,100 1,100 Recognized net actuarial gain, net of tax provision of $31 93 93 93 Total comprehensive income 9,097 (39 ) 9,058 Share-based compensation 1,028 (43 ) 985 985 Purchase of 29,724 common shares (1,456 ) (1,456 ) (1,456 ) Issuance of 525 common shares 1 26 27 27 Common shares distributed from rabbi trust of 525, net (28 ) 28 0 0 Cash dividends declared - $.20 per share (1,004 ) (1,004 ) (1,004 ) Balance at June 30, 2019 $ 12,822 $ (11,066 ) $ 11,066 $ 36,200 $ 341,804 $ (76,030 ) $ (51,257 ) $ (5,687 ) $ 257,852 $ (39 ) $ 257,813 Net income 7,951 7,951 93 8,044 Foreign currency translation adjustment (5,897 ) (5,897 ) (5,897 ) Recognized net actuarial gain, net of tax provision of $32 108 108 108 Total comprehensive income 2,162 93 2,255 Share-based compensation 1,388 (43 ) 1,345 1,345 Purchase of 15,150 common shares (751 ) (751 ) (751 ) Issuance of 1,262 common shares 3 54 57 57 Common shares distributed from rabbi trust of 3,219, net 85 (85 ) 0 0 Cash dividends declared - $.20 per share (1,002 ) (1,002 ) (1,002 ) Balance at September 30, 2019 $ 12,825 $ (10,981 ) $ 10,981 $ 37,642 $ 348,710 $ (76,781 ) $ (57,154 ) $ (5,579 ) $ 259,663 $ 54 $ 259,717

Pension Plans

Pension Plans	9 Months Ended
	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Pension Plans	NOTE E – PENSION PLANS The Company uses a December 31 measurement date for the Preformed Line Products Company Employees’ Retirement Plan (the “Plan”). Net periodic pension cost for this plan included the following components: Three Months Ended September 30 Nine Months Ended September 30 2020 2019 2020 2019 Service cost $ 0 $ 130 $ 0 $ 225 Interest cost 325 350 976 1,058 Expected return on plan assets (563 ) (483 ) (1,688 ) (1,459 ) Recognized net actuarial loss 98 140 348 390 Net periodic pension cost (benefit) $ (140 ) $ 137 $ (364 ) $ 214 The Company contributed $.3 million to the Plan during the nine months ended September 30, 2020. The Company does not plan to contribute additional funds to the Plan during the remainder of 2020.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income ("AOCI")	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income ("AOCI")	NOTE F – ACCUMULATED OTHER COMPREHENSIVE INCOME (“AOCI”) The following tables set forth the total changes in AOCI by component, net of tax: Three Months Ended September 30, 2020 Three Months Ended September 30, 2019 Unrecognized pension benefit cost Currency Translation Adjustment Total Unrecognized pension benefit cost Currency Translation Adjustment Total Balance at July 1 $ (5,482 ) $ (63,091 ) $ (68,573 ) $ (5,687 ) $ (51,257 ) $ (56,944 ) Other comprehensive loss before reclassifications: (Loss) gain on foreign currency translation adjustment 0 2,949 2,949 0 (5,897 ) (5,897 ) Amounts reclassified from AOCI: Amortization of defined benefit pension actuarial gain (a) 75 0 75 108 0 108 Net current period other comprehensive income (loss) 75 2,949 3,024 108 (5,897 ) (5,789 ) Balance at September 30 $ (5,407 ) $ (60,142 ) $ (65,549 ) $ (5,579 ) $ (57,154 ) $ (62,733 ) Nine Months Ended September 30, 2020 Nine Months Ended September 30, 2019 Defined pension plan activity Currency Translation Adjustment Total Defined benefit pension plan activity Currency Translation Adjustment Total Balance at January 1 $ (5,671 ) $ (51,682 ) $ (57,353 ) $ (5,873 ) $ (53,710 ) $ (59,583 ) Other comprehensive loss before reclassifications: Loss on foreign currency translation adjustment 0 (8,460 ) (8,460 ) 0 (3,444 ) (3,444 ) Amounts reclassified from AOCI: Amortization of defined benefit pension actuarial gain (a) 264 0 264 294 0 294 Net current period other comprehensive income (loss) 264 (8,460 ) (8,196 ) 294 (3,444 ) (3,150 ) Balance at September 30 $ (5,407 ) $ (60,142 ) $ (65,549 ) $ (5,579 ) $ (57,154 ) $ (62,733 ) (a) This AOCI component is included in the computation of net periodic pension costs.

Computation of Earnings Per Sha

Computation of Earnings Per Share	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Computation of Earnings Per Share	NOTE G – COMPUTATION OF EARNINGS PER SHARE Basic earnings per share were computed by dividing Net income by the weighted-average number of common shares outstanding for each respective period. Diluted earnings per share were calculated by dividing Net income by the weighted-average of all potentially dilutive common stock that was outstanding during the periods presented. The calculation of basic and diluted earnings per share for the three and nine months ended September 30, 2020 and 2019 was as follows: Three Months Ended September 30 Nine Months Ended September 30 2020 2019 2020 2019 Numerator Net income $ 12,954 $ 7,951 $ 27,133 $ 17,679 Denominator Determination of shares Weighted-average common shares outstanding 4,917 5,024 4,963 5,039 Dilutive effect - share-based awards 94 95 35 38 Diluted weighted-average common shares outstanding 5,011 5,119 4,998 5,077 Earnings per common share Basic $ 2.63 $ 1.58 $ 5.47 $ 3.51 Diluted $ 2.59 $ 1.55 $ 5.43 $ 3.48 For the three and nine-month periods ended September 30, 2020, 45,500 and 35,364 stock options, respectively, were excluded from the calculation of diluted earnings per share as the effect would have been anti-dilutive. For both three and nine-month periods ended September 30, 2019, 15,000 stock options were excluded from the calculation of diluted earnings per share as the effect would have been anti-dilutive.

Goodwill and Other Intangibles

Goodwill and Other Intangibles	9 Months Ended
	Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	NOTE H – GOODWILL AND OTHER INTANGIBLES The Company’s finite and indefinite-lived intangible assets consist of the following: September 30, 2020 December 31, 2019 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Finite-lived intangible assets Patents $ 4,806 $ (4,806 ) $ 4,806 $ (4,806 ) Land use rights 1,262 (437 ) 1,128 (331 ) Trademarks 1,675 (1,397 ) 1,718 (1,358 ) Technology 7,173 (2,142 ) 7,185 (1,708 ) Customer relationships 15,735 (7,943 ) 15,811 (7,329 ) $ 30,651 $ (16,725 ) $ 30,648 $ (15,532 ) Indefinite-lived intangible assets Goodwill $ 27,689 $ 27,840 The aggregate amortization expense for other intangibles with finite lives for the three and nine-month periods ended September 30, 2020 was $.5 million and $1.3 million, respectively. The aggregate amortization expense for other intangibles with finite lives for the three and nine-month periods ended September 30, 2019 was $.5 million and $1.1 million, respectively. Amortization expense is estimated to be $.5 million for the remainder of 2020 and $1.6 million for each of the years 2021, The Company’s measurement date for its annual impairment test for goodwill is October 1st of each year. The Company performs its annual impairment test for goodwill utilizing a discounted cash flow methodology, market comparables, and an overall market capitalization reasonableness test in computing fair value by reporting unit. The Company then compares the fair value of the reporting unit to its carrying value to assess if goodwill has been impaired. Based on the assumptions as to growth, discount rates and the weighting used for each respective valuation methodology, results of the valuations could be significantly different. However, the Company believes that the methodologies and weightings used are reasonable and result in appropriate fair values of the reporting units. The Company’s valuation method uses Level 3 inputs under the fair value hierarchy. The Company’s only intangible asset with an indefinite life is goodwill. The changes in the carrying amount of goodwill, by segment, for the nine months ended September 30, 2020 are as follows: USA The Americas EMEA Asia-Pacific Total Balance at January 1, 2020 $ 3,078 $ 4,158 $ 13,442 $ 7,162 $ 27,840 Currency translation 0 (97 ) 34 (88 ) (151 ) Balance at September 30, 2020 $ 3,078 $ 4,061 $ 13,476 $ 7,074 $ 27,689

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	NOTE I – SHARE-BASED COMPENSATION Long Term Incentive Plan of 2008 and 2016 Incentive Plan The Company maintains an equity award program to give the Company a competitive advantage in attracting, retaining, and motivating officers, employees and directors and to provide an incentive to those individuals to increase shareholder value through long-term incentives directly linked to the Company’s performance. Under the Preformed Line Products Company Long Term Incentive Plan of 2008 (the “LTIP”), certain employees, officers, and directors were eligible to receive awards of options, restricted shares and restricted share units (RSUs). The total number of Company common shares reserved for awards under the LTIP was 900,000, of which 800,000 common shares were reserved for RSUs and 100,000 common shares have been reserved for share options. The LTIP was terminated and replaced with the Preformed Line Products Company 2016 Incentive Plan (the “Incentive Plan”) in May 2016 upon approval by the Company’s Shareholders at the 2016 Annual Meeting of Shareholders on May 10, 2016. No further awards will be made under the LTIP and previously granted awards remain outstanding in accordance with their terms. Under the Incentive Plan, certain employees, officers, and directors will be eligible to receive awards of options, restricted shares and RSUs. The total number of Company common shares reserved for awards under the Incentive Plan is 1,000,000 of which 900,000 common shares have been reserved for restricted share awards and 100,000 common shares have been reserved for share options. The Incentive Plan expires on May 10, 2026. Restricted Share Units For the regular annual grants, a portion of the RSUs is subject to time-based cliff vesting and a portion is subject to vesting based upon the Company’s performance over a set period for all participants except the CEO. All of the CEO’s regular annual RSUs are subject to vesting based upon the Company’s performance over a set-year period. The RSUs are offered at no cost to the employees. The fair value of RSUs is based on the market price of a common share on the grant date and the shares underlying the awards are not issued until they vest. Dividends declared are accrued in cash. A summary of the RSUs outstanding under the LTIP for the nine months ended September 30, 2020 is as follows: Restricted Share Units Performance and Service Required (1) Service Required Total Restricted Share Units Weighted-Average Grant-Date Fair Value Nonvested as of January 1, 2020 196,342 15,292 211,634 $ 53.68 Granted 71,539 9,547 81,086 55.63 Vested (73,053 ) 0 (73,053 ) 54.60 Forfeited (11,051 ) (2,763 ) (13,814 ) 61.29 Nonvested as of September 30 , 2020 183,777 22,076 205,853 $ 61.09 (1) Nonvested, performance-based RSUs are reflected above at the maximum performance achievement level. For time-based RSUs, the Company recognizes stock-based compensation expense on a straight-line basis over the requisite service period of the award in General and administrative expense in the accompanying Statements of Consolidated Income. Compensation expense related to the time-based RSUs for the three and nine-month periods ended September 30, 2020 was $.1 million and $.3 million, respectively. Compensation expense related to the time-based RSUs for the three and nine-month periods ended September 30, 2019 was $.2 million and $.4 million, respectively. As of September 30, 2020, there was $.6 million of total unrecognized compensation cost related to time-based RSUs that is expected to be recognized over the weighted-average remaining period of approximately 1.8 years. For the performance-based RSUs, the number of RSUs in which the participants will vest depends on the Company’s level of performance measured by growth in either operating or pre-tax income and sales growth over a requisite performance period. Depending on the extent to which the performance criterions are satisfied under the LTIP and the Incentive Plan, the participants are eligible to earn common shares over the vesting period. Performance-based compensation expense for the three and nine-month periods ended September 30, 2020 was $1.2 million and $2.6 million, respectively. Performance-based compensation expense for the three and nine-month periods ended September 30, 2019 was $1.2 million and $2.9 million, respectively. As of September 30, 2020, the remaining compensation expense of $4.6 million for outstanding performance-based RSU’s is expected to be recognized over a period of approximately 1.8 years. In the event of a Change in Control (as defined in the LTIP and the Incentive Plan), vesting of the RSUs will be accelerated and all restrictions will lapse. Unvested performance-based awards will vest on a target potential payout. To satisfy the vesting of its RSU awards, the Company has reserved new shares from its authorized but unissued shares. Any additional awards granted will also be issued from the Company’s authorized but unissued shares. Share Option Awards The LTIP permitted and now the Incentive Plan permits the grant of 100,000 options to buy common shares of the Company to certain employees at not less than fair market value of the shares on the date of grant. Options issued to date under the LTIP and the Incentive Plan vest 50% after one year following the date of the grant, 75% after two years, and 100% after three years, and expire from five to ten years from the date of grant. Shares issued as a result of stock option exercises will be funded with the issuance of new shares. The Company utilizes the Black-Scholes option pricing model for estimating fair values of options. The Black-Scholes model requires assumptions regarding the volatility of the Company’s stock, the expected life of the stock award and the Company’s dividend yield. The Company utilizes historical data in determining these assumptions. The risk-free rate for periods within the contractual life of the option is based on the U.S. zero coupon Treasury yield in effect at the time of grant. There were 25,500 options granted for the nine-month period ended September 30, 2020 and no options granted for the nine-month period ended September 30, 2019. Stock option activity under the Company’s LTIP for nine months ended September 30, 2020 was as follows: Number of Shares Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (000's) Outstanding at January 1, 2020 31,750 $ 58.77 Granted 25,500 $ 48.13 Exercised (3,750 ) $ 48.00 Forfeited (1,250 ) $ 48.00 Outstanding (vested and expected to vest) at September 30, 2020 52,250 $ 54.61 7.7 $ 44 Exercisable at September 30, 2020 19,250 $ 60.76 4.5 $ 29 There were 3,750 and -0- stock option shares exercised during the nine-month periods ended September 30, 2020 and 2019, respectively. For the three and nine-month periods ended September 30, 2020 and 2019, the Company recorded compensation expense related to the stock options currently vested of less than $.1 $.1 Deferred Compensation Plan The Company maintains a trust, commonly referred to as a rabbi trust, in connection with the Company’s deferred compensation plan. This plan allows for two deferrals. First, Directors make elective deferrals of Director fees payable and held in the rabbi trust. The deferred compensation plan allows the Directors to elect to receive Director fees in common shares of the Company at a later date instead of fees paid each quarter in cash. Second, this plan allows certain Company employees to defer restricted shares or RSUs for future distribution in the form of common shares. Assets of the rabbi trust are consolidated, and the value of the Company’s common shares held in the rabbi trust is classified in Shareholders’ equity and generally accounted for in a manner similar to treasury stock. The Company recognizes the original amount of the deferred compensation (fair value of the deferred stock award at the date of grant) as the basis for recognition in common shares issued to the rabbi trust. Changes in the fair value of amounts owed to certain employees or Directors are not recognized as the Company’s deferred compensation plan does not permit diversification and must be settled by the delivery of a fixed number of the Company’s common shares. As of September 30, 2020, 265,508 shares have been deferred and are being held in the rabbi trust.

Fair Value of Financial Assets

Fair Value of Financial Assets and Liabilities	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Assets and Liabilities	NOTE J – FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES The Company measures and records certain assets and liabilities at fair value. A fair value hierarchy is used for those assets and liabilities measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s assumptions (unobservable inputs). The hierarchy consists of the following three levels: Level 1 Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets. Level 2 Inputs other than Level 1 inputs that are either directly or indirectly observable, which may include: o Quoted prices for similar assets in active markets; o Quoted prices for identical or similar assets or liabilities in inactive markets; o Inputs other than quoted prices that are observable for the asset or liability; and o Inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 Inputs to the valuation methodology are unobservable and developed using estimates and assumptions developed by the Company which reflect those that a market participant would use. The following table summarizes the Company’s assets and liabilities, recorded and measured at fair value, on the Company’s Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019: Description Balance as of September 30, 2020 Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Foreign currency forward contracts $ 646 $ 0 $ 646 $ 0 Total Assets $ 646 $ 0 $ 646 $ 0 Liabilities: Supplemental profit sharing plan $ 6,140 $ 0 $ 6,140 $ 0 Foreign currency forward contracts (277 ) 0 (277 ) 0 Earn-out 204 0 0 204 Total Liabilities $ 6,067 $ 0 $ 6,140 $ 204 Description Balance as of December 31, 2019 Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Liabilities: Supplemental profit sharing plan $ 6,059 $ 0 $ 6,059 $ 0 Earn-out 581 0 0 581 Total Liabilities $ 6,640 $ 0 $ 6,059 $ 581 The Company operates internationally and enters into intercompany transactions denominated in foreign currencies. Consequently, the Company is subject to market risk arising from exchange rate movements between the dates foreign currency transactions occur and the dates they are settled. The Company currently uses foreign currency forward contracts to reduce the risk related to some of these transactions. These contracts usually have maturities of 90 days or less and generally require an exchange of foreign currencies for U.S. dollars at maturity at rates stated in the contracts. These contracts are not designated as hedging instruments under U.S. GAAP. Accordingly, the changes in the fair value of the foreign currency forward contracts are recognized in each accounting period in “Other operating expense - net” on the Consolidated Statements of Income together with the transaction gain or loss from the related balance sheet position. For the three months and nine months ended September 30, 2020, the Company recognized a net gain of $.1 million and $1.0 million, respectively, on foreign currency forward contracts. The Company recognized a gain of $.1 million in both three and nine-month periods ended September 30, 2019. The Company has a non-qualified Supplemental Profit Sharing Plan for its executives. The liability for this unfunded Supplemental Profit Sharing Plan was $6.1 million at both September 30, 2020 and December 31, 2019. These amounts are recorded within Other noncurrent liabilities on the Company’s Consolidated Balance Sheets. The Supplemental Profit Sharing Plan allows participants the ability to hypothetically invest their proportionate award into various investment options, which primarily include mutual funds. The Company credits earnings, gains and losses to the participants’ deferred compensation account balances based on the investments selected by the participants. The Company measures the fair value of the Supplemental Profit Sharing Plan liability using the market values of the participants’ underlying investment accounts. The earn-out represents the estimated fair value of additional cash consideration payable in connection with a recent acquisition that is contingent upon the achievement of certain performance milestones using expected future cash flows over the earn-out period while applying a discount rate that appropriately captures the risk associated with the obligation. These are considered to be Level 3 inputs. The contingent liabilities at September 30, 2020 and December 31, 2019 of $.2 million and $.6 million, respectively, are recorded in Other noncurrent liabilities on the Company’s Consolidated Balance Sheets.

Recently Adopted Accounting Pro

Recently Adopted Accounting Pronouncements	9 Months Ended
	Sep. 30, 2020
Accounting Changes And Error Corrections [Abstract]
Recently Adopted Accounting Pronouncements	NOTE K – RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS In August 2018, the FASB issued ASU 2018-13, “Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement,” which will modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, including the removal of certain disclosure requirements. The amendments in ASU 2018-13 are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company adopted the new disclosure requirements for the period ending March 31, 2020. The additional components of this release did not have a material impact on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (“Topic 326”): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 changes how entities will measure credit losses for most financial assets and other instruments that are not measured at fair value through net income. This update introduces the current expected credit loss (CECL) model, which will require an entity to measure credit losses for certain financial instruments and financial assets, including trade receivables. Under this update, on initial recognition and at each reporting period, an entity will be required to recognize an allowance that reflects the entity’s current estimate of credit losses expected to be incurred over the life of the financial instrument. ASU 2016-13 is effective for public companies in fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company has completed its evaluation process and the January 1, 2020 adoption did not have a material impact to the Company’s consolidated financial statements for the nine months ended September 30, 2020.

New Accounting Standards to be

New Accounting Standards to be Adopted	9 Months Ended
	Sep. 30, 2020
Accounting Changes And Error Corrections [Abstract]
New Accounting Standards to be Adopted	NOTE L – NEW ACCOUNTING STANDARDS TO BE ADOPTED In December 2019, the FASB issued ASU No. 2019-12, Income Taxes: Simplifying the Accounting for Income Taxes (“Topic 740”), which simplifies the accounting for income taxes, eliminates certain exceptions within Topic 740 and clarifies certain other aspects of the current guidance to promote consistency among reporting entities. The new standard is effective for fiscal years beginning after December 15, 2020 on a prospective basis and early adoption is permitted. The Company is currently evaluating the impact of the provisions of this standard on the Company’s Consolidated Financial Statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (“Topic 848”): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides for temporary optional expedients and exceptions to the current guidance on certain contract modifications and hedging relationships to ease the burdens related to the expected market transition from the London Inter-bank Offered Rate (“LIBOR”) or other reference rates to alternative reference rates. The guidance is effective upon issuance and can be applied through December 31, 2022. The Company does not expect the adoption of this standard to have a material impact on its Consolidated Financial Statements.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Segment Information	NOTE M – SEGMENT INFORMATION The following tables present a summary of the Company’s reportable segments for the three and nine months ended September 30, 2020 and 2019. Financial results for the PLP-USA segment include the elimination of all segments’ intercompany profit in inventory. Three Months Ended September 30 Nine Months Ended September 30 2020 2019 2020 2019 Net sales PLP-USA $ 53,027 $ 47,617 $ 153,595 $ 135,411 The Americas 19,914 19,663 54,641 51,142 EMEA 27,034 21,132 68,441 59,376 Asia-Pacific 27,488 30,805 71,267 85,283 Total net sales $ 127,463 $ 119,217 $ 347,944 $ 331,212 Intersegment sales PLP-USA $ 2,786 $ 3,440 $ 7,787 $ 7,868 The Americas 3,029 2,149 7,706 5,905 EMEA 892 335 2,513 898 Asia-Pacific 4,176 3,572 10,180 10,699 Total intersegment sales $ 10,883 $ 9,496 $ 28,186 $ 25,370 Income taxes PLP-USA $ 2,020 $ 1,333 $ 4,891 $ 2,585 The Americas 875 901 2,321 1,948 EMEA 1,205 496 1,735 574 Asia-Pacific 358 483 359 1,195 Total income taxes $ 4,458 $ 3,213 $ 9,306 $ 6,302 Net income attributable to Preformed Line Products Company shareholders PLP-USA $ 6,753 $ 3,246 $ 16,439 $ 7,442 The Americas 1,908 2,565 4,598 5,188 EMEA 2,912 853 5,495 2,171 Asia-Pacific 1,381 1,287 601 2,878 Total net income attributable to Preformed Line Products Company shareholders $ 12,954 $ 7,951 $ 27,133 $ 17,679 September 30, 2020 December 31, 2019 Assets PLP-USA $ 143,935 $ 127,428 The Americas 69,151 71,908 EMEA 107,362 97,126 Asia-Pacific 131,593 137,109 Total identifiable assets $ 452,041 $ 433,571

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE N – INCOME TAXES The Company’s effective tax rate was 26% and 29% for the three months ended September 30, 2020 and 2019, respectively, and 26% for both nine-month periods ended September 30, 2020 and 2019 . The Company provides valuation allowances against deferred tax assets when it is more likely than not that some portion or all of its deferred tax assets will not be realized. No significant changes to the valuation allowances were reflected for the periods ended September 30, 2020 or September 30, 2019. The Company previously considered the majority of the earnings in its non-U.S. subsidiaries to be permanently reinvested and accordingly did not record any associated deferred income taxes on remittance of such earnings. The Company intends to continue to invest most or all of these earnings, as well as its capital in these subsidiaries, indefinitely, outside of the U.S. and does not expect to incur any significant additional taxes related to such earnings.

Product Warranty Reserve

Product Warranty Reserve	9 Months Ended
	Sep. 30, 2020
Guarantees [Abstract]
Product Warranty Reserve	NOTE O – PRODUCT WARRANTY RESERVE The Company records an accrual for estimated warranty costs to Costs of products sold in the Statements of Consolidated Income. These amounts are recorded in Accrued expenses and other liabilities on the Company’s Consolidated Balance Sheets. The Company records and accounts for its warranty reserve based on specific claim incidents. Should the Company become aware of a specific potential warranty claim for which liability is probable and reasonably estimable, a specific charge is recorded and accounted for accordingly. Adjustments are made quarterly to the accruals as claim information changes. The following is a rollforward of the product warranty reserve: Nine Months Ended September 30 2020 2019 Beginning of period balance $ 1,309 $ 928 Additions charged to income 247 692 Warranty usage (37 ) (293 ) Currency translation (76 ) (46 ) End of period balance $ 1,443 $ 1,281

Debt Arrangements

Debt Arrangements	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Debt Arrangements	NOTE P – DEBT ARRANGEMENTS On April 17, 2020, the Company extended the term on its $65 million credit facility from June 30, 2021 to June 30, 2024 and added its Austrian subsidiary as a borrower on the facility. All other terms remain the same, including the interest rate at LIBOR plus 1.125% unless its funded debt to Earnings before Interest, Taxes and Depreciation ratio exceeds 2.25 to 1, at which point the LIBOR spread becomes 1.500%. At September 30, 2020, the Company’s Polish subsidiary had borrowed $6.3 million U.S. dollars at a rate of 1.125% plus the Warsaw Interbank Offer Rate with a term expiring June 30, 2024. At September 30, 2020, the Company’s Australian subsidiary had borrowed $5.3 million U.S. dollars, also with a term expiring June 30, 2024. At September 30, 2020, the interest rates on the U.S., Polish and Australian line of credit agreement were 1.273%, 1.325% and 1.215%, respectively. Under the credit facility, at September 30, 2020, the Company had utilized $30.1 million with $34.9 million available under the line of credit, net of long-term outstanding letters of credit of $.1 million. The line of credit agreement contains, among other provisions, requirements for maintaining levels of net worth and profitability. At September 30, 2020, the Company was in compliance with these covenants. On February 28, 2019, the Company acquired its Austrian subsidiary, SubCon Electrical Fittings GmbH (“SubCon”), headquartered in Dornbirn, Austria. The Company’s Austrian subsidiary had a 1.0 million euros, or $1.1 million U.S. dollars line of credit with a term expiration of May 31, 2021 with the option to renew for an additional twelve months indefinitely. On June 26, 2020, the Company’s Austrian subsidiary borrowed $.6 million on the Company’s line of credit at an interest rate of 1.308%. The proceeds were used to repay the previously outstanding local line of credit. At repayment, the local line of credit was cancelled. On April 25, 2019, the Company borrowed $8.0 million U.S. dollars on behalf of its Indonesian subsidiary at a rate of 3.501% with a term expiring on April 30, 2024. At September 30, 2020, $6.9 million was outstanding on this debt facility, of which $.8 million is classified as current. On August 14, 2019, the Company’s New Zealand subsidiary borrowed $5.3 million U.S. dollars at a rate of 3.900% with a term expiring on August 26, 2021. At September 30, 2020, $4.9 million was outstanding on this facility, all of which is classified as current. This loan is secured by the Company’s New Zealand subsidiary’s land and building. For the periods ended September 30, 2020 and December 31, 2019, the Company’s Asia Pacific segment had none and $.3 million, respectively, in restricted cash used to secure bank debt. The restricted cash is shown on the Company’s Consolidated Balance Sheets in Other assets.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	NOTE Q – LEASES The Company regularly enters into leases in the normal course of business. As of September 30, 2020, the leases in effect were related to land, buildings, vehicles, office equipment and other production equipment under operating leases with lease terms of up to 99 years. The Company often has the option to renew lease terms for buildings and other assets. The exercise of lease renewal options are generally at the Company’s sole discretion. In addition, certain lease arrangements may be terminated prior to their original expiration date at the Company’s discretion. The Company evaluates renewal and termination options at the lease commencement date to determine if the Company is reasonably certain to exercise the option on the basis of economic factors. The weighted average remaining lease term for the Company’s operating and financing leases as of September 30, 2020 was 17.5 and 2.7 years, respectively. Lease expense is recognized for these leases on a straight-line basis over the lease term with variable lease payments recognized in the period those payments are incurred. The components of operating and finance lease costs are recognized in Costs and expenses and Interest expense, respectively, on the Company’s Consolidated Statements of Income. The Company’s operating and finance lease costs for the three and nine months ended September 30, 2020 were as follows: Three Months Ended September 30, 2020 September 30, 2019 Components of lease expense Operating lease cost $ 751 $ 859 Finance lease cost Amortization of right-of-use assets 15 17 Interest on lease liabilities 1 2 Total lease cost $ 767 $ 878 Nine Months Ended September 30, 2020 September 30, 2019 Components of lease expense Operating lease cost $ 2,193 $ 2,338 Finance lease cost Amortization of right-of-use assets 47 51 Interest on lease liabilities 6 8 Total lease cost $ 2,246 $ 2,397 The discount rate implicit within each lease is often not determinable and, therefore, the Company establishes the discount rate based on its incremental borrowing rate. The incremental borrowing rate for the Company’s leases is determined based on lease term and currency in which lease payments are made, adjusted for impacts of collateral. The weighted average discount rate used to measure the Company’s operating and finance lease liabilities as of September 30 , 2020 was % and %, respectively . Future maturities of the Company’s lease liabilities as of September 30, 2020 are as follows: Operating Leases Finance Leases 2020 $ 668 $ 30 2021 2,408 60 2022 1,905 40 2023 1,343 36 2024 and thereafter 10,003 6 Total lease payments $ 16,327 $ 172 Less amount of lease payment representing interest 5,585 9 Total present value of lease payments $ 10,742 $ 163 The total minimum sublease rentals under noncancelable subleases to be received through 2023 is $2.9 million. Supplemental cash flow information related to leases for the nine-month period ended September 30, 2020 was as follows: Nine Months Ended September 30, 2020 Nine Months Ended September 30, 2019 Supplemental cash flow information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating and financing leases $ 2,100 $ 4,618 Financing cash flows from finance leases 87 74

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2020
Related Party Transactions [Abstract]
Related Party Transactions	NOTE R – RELATED PARTY TRANSACTIONS On January 2, 2020, the Company purchased 1,157 shares of the Company from a retired Officer at a price per share of $67.71, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On February 5, 2020, the Company purchased 39,208 shares of the Company from current and retired Officers at a price per share of $58.65, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Business Combinations	NOTE S – BUSINESS COMBINATIONS The Company accounts for business combinations using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are recorded at their estimated fair values at the date of acquisition. On February 28, 2019, the Company acquired 100% of SubCon. Subcon is headquartered in Dornbirn, Austria with manufacturing operations in Brno, Czech Republic. The acquisition of SubCon will strengthen the Company’s position in the global substation market and will expand its operational presence in Europe. The total purchase price was $10.1 million in cash, net of $1.9 million in cash acquired. The purchase price was predominantly allocated to Goodwill of $6.6 million and Intangible assets of $4.7 million with useful lives ranging from 10 to 11 years. SubCon’s overall purchase price included an estimated contingent liability of $.6 million for an earn-out consideration with a potential maximum payment of 4.0 million Euros that will be considered for remeasurement during each reporting period as the operating results of SubCon are evaluated during each reporting period based upon operating results over a four year period. At September 30, 2020, the current earnout value of $.2 million is recorded in Other noncurrent liabilities on the Company’s Consolidated Balance Sheets. On April 1, 2019, the Company acquired MICOS Telcom s.r.o (“MICOS Telcom”) headquartered in Prostějov, Czech Republic. The acquisition of MICOS Telcom will strengthen the Company’s position in the global telecom market and will also expand its operational presence in Europe. The total purchase price was $8.8 million in cash, net of $.5 million in cash acquired, including a hold-back liability of $1.5 million payable in two years from the date of purchase and $.9 million of deferred consideration for the remaining 10%. The hold-back liability and deferred consideration are recorded in Other noncurrent liabilities on the Company’s Consolidated Balance Sheets. The purchase price was predominantly allocated to Goodwill of $5.6 million and Intangible assets of $3.4 million. The Intangible assets included in the acquisition of MICOS have useful lives of 12 years. The operating results and financial position of both SubCon and MICOS Telcom are included in the Company’s EMEA reportable segment as of their respective dates of acquisition. Pro-forma results of the Company’s consolidated operations for the three and nine-month periods ended September 30 , 2020 and 201 9 would not have been materially different from reported results and are , therefore , not presented. The following table summarizes the final fair values of the assets acquired and liabilities assumed at the acquisition dates: Assets acquired Current assets, net of cash $ 5,976 Property, plant and equipment 1,189 Goodwill 12,132 Finite-lived intangible assets 8,092 Other long-term assets 1,883 Total assets acquired 29,272 Liabilities assumed (10,378 ) Net assets acquired $ 18,894

Revenue (Policies)

Revenue (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Revenue Recognition	Revenue recognition Net sales include products and shipping and handling charges, net of estimates for product returns. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products. All revenue is recognized when the Company satisfies the performance obligations under the contract and control of the product is transferred to the customer, primarily based on shipping terms. Revenue for shipping and handling charges are recognized at the time the products are shipped to, delivered to or picked up by the customer. The Company estimates product returns based on historical return rates.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Revenues by Segment and Product Type	The Company’s revenues by segment and product type are as follows: Three Months Ended September 30, 2020 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 60 % 80 % 59 % 60 % 63 % Communications 34 16 35 4 25 Special Industries 6 4 6 36 12 Total 100 % 100 % 100 % 100 % 100 % Three Months Ended September 30, 2019 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 63 % 72 % 54 % 75 % 66 % Communications 29 26 34 5 23 Special Industries 8 2 12 20 11 Total 100 % 100 % 100 % 100 % 100 % Nine Months Ended September 30, 2020 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 63 % 78 % 58 % 69 % 66 % Communications 31 17 35 4 24 Special Industries 6 5 7 27 10 Total 100 % 100 % 100 % 100 % 100 % Nine Months Ended September 30, 2019 Product Type PLP-USA The Americas EMEA Asia-Pacific Consolidated Energy 63 % 67 % 59 % 68 % 64 % Communications 30 29 27 7 24 Special Industries 7 4 14 25 12 Total 100 % 100 % 100 % 100 % 100 %

Other Financial Statement Inf_2

Other Financial Statement Information (Tables)	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Inventories - Net	Inventories – net September 30, 2020 December 31, 2019 Raw materials $ 52,779 $ 49,729 Work-in-process 9,330 9,352 Finished Goods 37,015 45,760 99,124 104,841 Excess of current cost over LIFO cost (4,809 ) (4,667 ) Noncurrent portion of inventory 0 (4,456 ) $ 94,315 $ 95,718
Property, Plant and Equipment - Net	Major classes of Property, plant and equipment are stated at cost and were as follows: September 30, 2020 December 31, 2019 Land and improvements $ 21,168 $ 22,218 Buildings and improvements 83,480 82,811 Machinery, equipment and aircraft 187,372 180,221 Construction in progress 17,770 9,460 309,790 294,710 Less accumulated depreciation (175,350 ) (170,692 ) $ 134,440 $ 124,018

Shareholders Equity (Tables)

Shareholders Equity (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Summary of Changes in Shareholders Equity	The following table reflects the changes in shareholders equity for the three and nine months ended September 30, 2020 and 2019: Accumulated Other Comprehensive Income (Loss) Common Shares Common Shares Issued to Rabbi Trust Deferred Compensation Liability Paid in Capital Retained Earnings Treasury Shares Cumulative Translation Adjustment Unrecognized Pension Benefit Cost Total Preformed Line Products Company Equity Noncontrolling Interests Total Equity (In thousands, except share and per share data) Balance at December 31, 2019 $ 12,848 $ (10,981 ) $ 10,981 $ 38,854 $ 353,292 $ (79,106 ) $ (51,682 ) $ (5,671 ) $ 268,535 $ 33 $ 268,568 Net income (loss) 3,698 3,698 (45 ) 3,653 Foreign currency translation adjustment (16,881 ) (16,881 ) (16,881 ) Recognized net actuarial gain, net of tax provision of $31 98 98 98 Total comprehensive income (13,085 ) (45 ) (13,130 ) Share-based compensation 976 (43 ) 933 933 Purchase of 75,246 common shares (3,980 ) (3,980 ) (3,980 ) Issuance of 77,381 common shares 155 155 155 Common shares distributed from rabbi trust of 3,358, net 101 (101 ) 0 0 Cash dividends declared - $.20 per share (83 ) (963 ) (1,046 ) (1,046 ) Balance at March 31, 2020 $ 13,003 $ (10,880 ) $ 10,880 $ 39,747 $ 355,984 $ (83,086 ) $ (68,563 ) $ (5,573 ) $ 251,512 $ (12 ) $ 251,500 Net income 10,481 10,481 7 10,488 Foreign currency translation adjustment 5,472 5,472 5,472 Recognized net actuarial gain, net of tax provision of $39 91 91 91 Total comprehensive income 16,044 7 16,051 Share-based compensation 612 (26 ) 586 586 Purchase of 60,608 common shares (3,011 ) (3,011 ) (3,011 ) Issuance of 603 common shares 26 26 26 Common shares issued to rabbi trust of 603, net (30 ) 30 0 0 Cash dividends declared - $.20 per share (996 ) (996 ) (996 ) Balance at June 30, 2020 $ 13,003 $ (10,910 ) $ 10,910 $ 40,385 $ 365,443 $ (86,097 ) $ (63,091 ) $ (5,482 ) $ 264,161 $ (5 ) $ 264,156 Net income 12,954 12,954 8 12,962 Foreign currency translation adjustment 2,949 2,949 2,949 Recognized net actuarial gain, net of tax provision of $23 75 75 75 Total comprehensive income 15,978 8 15,986 Share-based compensation 1,458 1,458 1,458 Purchase of 24,335 common shares (1,223 ) (1,223 ) (1,223 ) Issuance of 622 common shares 10 204 214 214 Common shares issued to rabbi trust of 622, net (30 ) 30 0 0 Cash dividends declared - $.20 per share (1,013 ) (1,013 ) (1,013 ) Balance at September 30, 2020 $ 13,013 $ (10,940 ) $ 10,940 $ 42,047 $ 377,384 $ (87,320 ) $ (60,142 ) $ (5,407 ) $ 279,575 $ 3 $ 279,578 Accumulated Other Comprehensive Income (Loss) Common Shares Common Shares Issued to Rabbi Trust Deferred Compensation Liability Paid in Capital Retained Earnings Treasury Shares Cumulative Translation Adjustment Unrecognized Pension Benefit Cost Total Preformed Line Products Company Equity Noncontrolling Interests Total Equity (In thousands, except share and per share data) Balance at December 31, 2018 $ 12,662 $ (11,008 ) $ 11,008 $ 34,401 $ 334,170 $ (72,280 ) $ (53,710 ) $ (5,873 ) $ 249,370 $ 0 $ 249,370 Net income 1,824 1,824 1,824 Foreign currency translation adjustment 1,353 1,353 1,353 Recognized net actuarial gain, net of tax provision of $32 93 93 93 Total comprehensive income 3,270 0 3,270 Share-based compensation 928 (36 ) 892 892 Purchase of 40,891 common shares (2,294 ) (2,294 ) (2,294 ) Issuance of 78,821 common shares 159 (18 ) 141 141 Common shares issued to rabbi trust of 705, net (30 ) 30 0 0 Cash dividends declared - $.20 per share (165 ) (1,011 ) (1,176 ) (1,176 ) Balance at March 31, 2019 $ 12,821 $ (11,038 ) $ 11,038 $ 35,146 $ 334,947 $ (74,574 ) $ (52,357 ) $ (5,780 ) $ 250,203 $ 0 $ 250,203 Net income 7,904 7,904 (39 ) 7,865 Foreign currency translation adjustment 1,100 1,100 1,100 Recognized net actuarial gain, net of tax provision of $31 93 93 93 Total comprehensive income 9,097 (39 ) 9,058 Share-based compensation 1,028 (43 ) 985 985 Purchase of 29,724 common shares (1,456 ) (1,456 ) (1,456 ) Issuance of 525 common shares 1 26 27 27 Common shares distributed from rabbi trust of 525, net (28 ) 28 0 0 Cash dividends declared - $.20 per share (1,004 ) (1,004 ) (1,004 ) Balance at June 30, 2019 $ 12,822 $ (11,066 ) $ 11,066 $ 36,200 $ 341,804 $ (76,030 ) $ (51,257 ) $ (5,687 ) $ 257,852 $ (39 ) $ 257,813 Net income 7,951 7,951 93 8,044 Foreign currency translation adjustment (5,897 ) (5,897 ) (5,897 ) Recognized net actuarial gain, net of tax provision of $32 108 108 108 Total comprehensive income 2,162 93 2,255 Share-based compensation 1,388 (43 ) 1,345 1,345 Purchase of 15,150 common shares (751 ) (751 ) (751 ) Issuance of 1,262 common shares 3 54 57 57 Common shares distributed from rabbi trust of 3,219, net 85 (85 ) 0 0 Cash dividends declared - $.20 per share (1,002 ) (1,002 ) (1,002 ) Balance at September 30, 2019 $ 12,825 $ (10,981 ) $ 10,981 $ 37,642 $ 348,710 $ (76,781 ) $ (57,154 ) $ (5,579 ) $ 259,663 $ 54 $ 259,717

Pension Plans (Tables)

Pension Plans (Tables)	9 Months Ended
	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Components of Net Periodic Pension Cost	Net periodic pension cost for this plan included the following components: Three Months Ended September 30 Nine Months Ended September 30 2020 2019 2020 2019 Service cost $ 0 $ 130 $ 0 $ 225 Interest cost 325 350 976 1,058 Expected return on plan assets (563 ) (483 ) (1,688 ) (1,459 ) Recognized net actuarial loss 98 140 348 390 Net periodic pension cost (benefit) $ (140 ) $ 137 $ (364 ) $ 214

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income ("AOCI") (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Summary of Total Changes in AOCI by Component, Net of Tax	The following tables set forth the total changes in AOCI by component, net of tax: Three Months Ended September 30, 2020 Three Months Ended September 30, 2019 Unrecognized pension benefit cost Currency Translation Adjustment Total Unrecognized pension benefit cost Currency Translation Adjustment Total Balance at July 1 $ (5,482 ) $ (63,091 ) $ (68,573 ) $ (5,687 ) $ (51,257 ) $ (56,944 ) Other comprehensive loss before reclassifications: (Loss) gain on foreign currency translation adjustment 0 2,949 2,949 0 (5,897 ) (5,897 ) Amounts reclassified from AOCI: Amortization of defined benefit pension actuarial gain (a) 75 0 75 108 0 108 Net current period other comprehensive income (loss) 75 2,949 3,024 108 (5,897 ) (5,789 ) Balance at September 30 $ (5,407 ) $ (60,142 ) $ (65,549 ) $ (5,579 ) $ (57,154 ) $ (62,733 ) Nine Months Ended September 30, 2020 Nine Months Ended September 30, 2019 Defined pension plan activity Currency Translation Adjustment Total Defined benefit pension plan activity Currency Translation Adjustment Total Balance at January 1 $ (5,671 ) $ (51,682 ) $ (57,353 ) $ (5,873 ) $ (53,710 ) $ (59,583 ) Other comprehensive loss before reclassifications: Loss on foreign currency translation adjustment 0 (8,460 ) (8,460 ) 0 (3,444 ) (3,444 ) Amounts reclassified from AOCI: Amortization of defined benefit pension actuarial gain (a) 264 0 264 294 0 294 Net current period other comprehensive income (loss) 264 (8,460 ) (8,196 ) 294 (3,444 ) (3,150 ) Balance at September 30 $ (5,407 ) $ (60,142 ) $ (65,549 ) $ (5,579 ) $ (57,154 ) $ (62,733 ) (a) This AOCI component is included in the computation of net periodic pension costs.

Computation of Earnings Per S_2

Computation of Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings Per Share	The calculation of basic and diluted earnings per share for the three and nine months ended September 30, 2020 and 2019 was as follows: Three Months Ended September 30 Nine Months Ended September 30 2020 2019 2020 2019 Numerator Net income $ 12,954 $ 7,951 $ 27,133 $ 17,679 Denominator Determination of shares Weighted-average common shares outstanding 4,917 5,024 4,963 5,039 Dilutive effect - share-based awards 94 95 35 38 Diluted weighted-average common shares outstanding 5,011 5,119 4,998 5,077 Earnings per common share Basic $ 2.63 $ 1.58 $ 5.47 $ 3.51 Diluted $ 2.59 $ 1.55 $ 5.43 $ 3.48

Goodwill and Other Intangibles

Goodwill and Other Intangibles (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Finite and Indefinite-Lived Intangible Assets	The Company’s finite and indefinite-lived intangible assets consist of the following: September 30, 2020 December 31, 2019 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Finite-lived intangible assets Patents $ 4,806 $ (4,806 ) $ 4,806 $ (4,806 ) Land use rights 1,262 (437 ) 1,128 (331 ) Trademarks 1,675 (1,397 ) 1,718 (1,358 ) Technology 7,173 (2,142 ) 7,185 (1,708 ) Customer relationships 15,735 (7,943 ) 15,811 (7,329 ) $ 30,651 $ (16,725 ) $ 30,648 $ (15,532 ) Indefinite-lived intangible assets Goodwill $ 27,689 $ 27,840
Changes in Carrying Amount of Goodwill by Segment	The changes in the carrying amount of goodwill, by segment, for the nine months ended September 30, 2020 are as follows: USA The Americas EMEA Asia-Pacific Total Balance at January 1, 2020 $ 3,078 $ 4,158 $ 13,442 $ 7,162 $ 27,840 Currency translation 0 (97 ) 34 (88 ) (151 ) Balance at September 30, 2020 $ 3,078 $ 4,061 $ 13,476 $ 7,074 $ 27,689

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2020
Summary of RSUs Outstanding Under LTIP	A summary of the RSUs outstanding under the LTIP for the nine months ended September 30, 2020 is as follows: Restricted Share Units Performance and Service Required (1) Service Required Total Restricted Share Units Weighted-Average Grant-Date Fair Value Nonvested as of January 1, 2020 196,342 15,292 211,634 $ 53.68 Granted 71,539 9,547 81,086 55.63 Vested (73,053 ) 0 (73,053 ) 54.60 Forfeited (11,051 ) (2,763 ) (13,814 ) 61.29 Nonvested as of September 30 , 2020 183,777 22,076 205,853 $ 61.09 (1) Nonvested, performance-based RSUs are reflected above at the maximum performance achievement level.
Long Term Incentive Plan [Member]
Stock Option Activity in Company's Plan	Stock option activity under the Company’s LTIP for nine months ended September 30, 2020 was as follows: Number of Shares Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (000's) Outstanding at January 1, 2020 31,750 $ 58.77 Granted 25,500 $ 48.13 Exercised (3,750 ) $ 48.00 Forfeited (1,250 ) $ 48.00 Outstanding (vested and expected to vest) at September 30, 2020 52,250 $ 54.61 7.7 $ 44 Exercisable at September 30, 2020 19,250 $ 60.76 4.5 $ 29

Fair Value of Financial Asset_2

Fair Value of Financial Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Recorded and Measured at Fair Value	The following table summarizes the Company’s assets and liabilities, recorded and measured at fair value, on the Company’s Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019: Description Balance as of September 30, 2020 Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Foreign currency forward contracts $ 646 $ 0 $ 646 $ 0 Total Assets $ 646 $ 0 $ 646 $ 0 Liabilities: Supplemental profit sharing plan $ 6,140 $ 0 $ 6,140 $ 0 Foreign currency forward contracts (277 ) 0 (277 ) 0 Earn-out 204 0 0 204 Total Liabilities $ 6,067 $ 0 $ 6,140 $ 204 Description Balance as of December 31, 2019 Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Liabilities: Supplemental profit sharing plan $ 6,059 $ 0 $ 6,059 $ 0 Earn-out 581 0 0 581 Total Liabilities $ 6,640 $ 0 $ 6,059 $ 581

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Summary of Company's Reportable Segments	The following tables present a summary of the Company’s reportable segments for the three and nine months ended September 30, 2020 and 2019. Financial results for the PLP-USA segment include the elimination of all segments’ intercompany profit in inventory. Three Months Ended September 30 Nine Months Ended September 30 2020 2019 2020 2019 Net sales PLP-USA $ 53,027 $ 47,617 $ 153,595 $ 135,411 The Americas 19,914 19,663 54,641 51,142 EMEA 27,034 21,132 68,441 59,376 Asia-Pacific 27,488 30,805 71,267 85,283 Total net sales $ 127,463 $ 119,217 $ 347,944 $ 331,212 Intersegment sales PLP-USA $ 2,786 $ 3,440 $ 7,787 $ 7,868 The Americas 3,029 2,149 7,706 5,905 EMEA 892 335 2,513 898 Asia-Pacific 4,176 3,572 10,180 10,699 Total intersegment sales $ 10,883 $ 9,496 $ 28,186 $ 25,370 Income taxes PLP-USA $ 2,020 $ 1,333 $ 4,891 $ 2,585 The Americas 875 901 2,321 1,948 EMEA 1,205 496 1,735 574 Asia-Pacific 358 483 359 1,195 Total income taxes $ 4,458 $ 3,213 $ 9,306 $ 6,302 Net income attributable to Preformed Line Products Company shareholders PLP-USA $ 6,753 $ 3,246 $ 16,439 $ 7,442 The Americas 1,908 2,565 4,598 5,188 EMEA 2,912 853 5,495 2,171 Asia-Pacific 1,381 1,287 601 2,878 Total net income attributable to Preformed Line Products Company shareholders $ 12,954 $ 7,951 $ 27,133 $ 17,679 September 30, 2020 December 31, 2019 Assets PLP-USA $ 143,935 $ 127,428 The Americas 69,151 71,908 EMEA 107,362 97,126 Asia-Pacific 131,593 137,109 Total identifiable assets $ 452,041 $ 433,571

Product Warranty Reserve (Table

Product Warranty Reserve (Tables)	9 Months Ended
	Sep. 30, 2020
Guarantees [Abstract]
Roll Forward of Product Warranty Reserve	The following is a rollforward of the product warranty reserve: Nine Months Ended September 30 2020 2019 Beginning of period balance $ 1,309 $ 928 Additions charged to income 247 692 Warranty usage (37 ) (293 ) Currency translation (76 ) (46 ) End of period balance $ 1,443 $ 1,281

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Summary of Components of Lease Expense	The Company’s operating and finance lease costs for the three and nine months ended September 30, 2020 were as follows: Three Months Ended September 30, 2020 September 30, 2019 Components of lease expense Operating lease cost $ 751 $ 859 Finance lease cost Amortization of right-of-use assets 15 17 Interest on lease liabilities 1 2 Total lease cost $ 767 $ 878 Nine Months Ended September 30, 2020 September 30, 2019 Components of lease expense Operating lease cost $ 2,193 $ 2,338 Finance lease cost Amortization of right-of-use assets 47 51 Interest on lease liabilities 6 8 Total lease cost $ 2,246 $ 2,397
Schedule of Future Maturities of Lease Liabilities	Future maturities of the Company’s lease liabilities as of September 30, 2020 are as follows: Operating Leases Finance Leases 2020 $ 668 $ 30 2021 2,408 60 2022 1,905 40 2023 1,343 36 2024 and thereafter 10,003 6 Total lease payments $ 16,327 $ 172 Less amount of lease payment representing interest 5,585 9 Total present value of lease payments $ 10,742 $ 163
Summary of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases for the nine-month period ended September 30, 2020 was as follows: Nine Months Ended September 30, 2020 Nine Months Ended September 30, 2019 Supplemental cash flow information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating and financing leases $ 2,100 $ 4,618 Financing cash flows from finance leases 87 74

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Summary of Final Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the final fair values of the assets acquired and liabilities assumed at the acquisition dates: Assets acquired Current assets, net of cash $ 5,976 Property, plant and equipment 1,189 Goodwill 12,132 Finite-lived intangible assets 8,092 Other long-term assets 1,883 Total assets acquired 29,272 Liabilities assumed (10,378 ) Net assets acquired $ 18,894

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Percentage of ownership in earnings of subsidiary	100.00%

Revenue - Revenues by Segment a

Revenue - Revenues by Segment and Product Type (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	100.00%	100.00%	100.00%	100.00%
Energy [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	63.00%	66.00%	66.00%	64.00%
Communications [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	25.00%	23.00%	24.00%	24.00%
Special Industries [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	12.00%	11.00%	10.00%	12.00%
PLP-USA [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	100.00%	100.00%	100.00%	100.00%
PLP-USA [Member] | Energy [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	60.00%	63.00%	63.00%	63.00%
PLP-USA [Member] | Communications [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	34.00%	29.00%	31.00%	30.00%
PLP-USA [Member] | Special Industries [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	6.00%	8.00%	6.00%	7.00%
The Americas [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	100.00%	100.00%	100.00%	100.00%
The Americas [Member] | Energy [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	80.00%	72.00%	78.00%	67.00%
The Americas [Member] | Communications [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	16.00%	26.00%	17.00%	29.00%
The Americas [Member] | Special Industries [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	4.00%	2.00%	5.00%	4.00%
EMEA [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	100.00%	100.00%	100.00%	100.00%
EMEA [Member] | Energy [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	59.00%	54.00%	58.00%	59.00%
EMEA [Member] | Communications [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	35.00%	34.00%	35.00%	27.00%
EMEA [Member] | Special Industries [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	6.00%	12.00%	7.00%	14.00%
Asia-Pacific [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	100.00%	100.00%	100.00%	100.00%
Asia-Pacific [Member] | Energy [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	60.00%	75.00%	69.00%	68.00%
Asia-Pacific [Member] | Communications [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	4.00%	5.00%	4.00%	7.00%
Asia-Pacific [Member] | Special Industries [Member]
Disaggregation Of Revenue [Line Items]
Percentage of disaggregated revenue	36.00%	20.00%	27.00%	25.00%

Other Financial Statement Inf_3

Other Financial Statement Information - Inventories - Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 52,779	$ 49,729
Work-in-process	9,330	9,352
Finished Goods	37,015	45,760
Inventory, gross	99,124	104,841
Excess of current cost over LIFO cost	(4,809)	(4,667)
Noncurrent portion of inventory	0	(4,456)
Inventories - net	$ 94,315	$ 95,718

Other Financial Statement Inf_4

Other Financial Statement Information - Additional Information (Detail) - USD ($) $ in Millions	Jun. 01, 2018	Nov. 02, 2016	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Inventory Disclosure [Abstract]
Cost of inventories for certain materials using LIFO method			$ 31.1		$ 31.1		$ 32
Expense (benefit) charge to earnings from LIFO inventory changes			$ 0.1	$ 0.1	$ 0.1	$ 0.5
Name of plaintiff					Altalink, L.P.
Complaint filling date					November 2016
Estimated damages from defendants	$ 29.4	$ 56

Other Financial Statement Inf_5

Other Financial Statement Information - Property, Plant and Equipment - Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment - Gross	$ 309,790	$ 294,710
Less accumulated depreciation	(175,350)	(170,692)
Property, plant and equipment - Net	134,440	124,018
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment - Gross	21,168	22,218
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment - Gross	83,480	82,811
Machinery, Equipment and Aircraft [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment - Gross	187,372	180,221
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment - Gross	$ 17,770	$ 9,460

Shareholders Equity - Summary o

Shareholders Equity - Summary of Changes in Shareholders Equity (Detail) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Stockholders Equity Note [Line Items]
Beginning Balance	$ 264,156	$ 251,500	$ 268,568	$ 257,813	$ 250,203	$ 249,370	$ 268,568	$ 249,370
Net income	12,962	10,488	3,653	8,044	7,865	1,824	27,103	17,733
Foreign currency translation adjustment	2,949	5,472	(16,881)	(5,897)	1,100	1,353	(8,460)	(3,444)
Recognized net actuarial gain, net of tax provision	75	91	98	108	93	93	264	294
Total comprehensive income	15,986	16,051	(13,130)	2,255	9,058	3,270
Share-based compensation	1,458	586	933	1,345	985	892
Purchase of common shares	(1,223)	(3,011)	(3,980)	(751)	(1,456)	(2,294)
Issuance of common shares	214	26	155	57	27	141
Common shares issued to rabbi trust	0	0	0	0	0	0
Cash dividends declared per share	(1,013)	(996)	(1,046)	(1,002)	(1,004)	(1,176)
Ending Balance	279,578	264,156	251,500	259,717	257,813	250,203	279,578	259,717
Common Shares [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	13,003	13,003	12,848	12,822	12,821	12,662	12,848	12,662
Issuance of common shares	10		155	3	1	159
Ending Balance	13,013	13,003	13,003	12,825	12,822	12,821	13,013	12,825
Common Shares Issued to Rabbi Trust [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	(10,910)	(10,880)	(10,981)	(11,066)	(11,038)	(11,008)	(10,981)	(11,008)
Common shares issued to rabbi trust	(30)	(30)	101	85	(28)	(30)
Ending Balance	(10,940)	(10,910)	(10,880)	(10,981)	(11,066)	(11,038)	(10,940)	(10,981)
Deferred Compensation Liability [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	10,910	10,880	10,981	11,066	11,038	11,008	10,981	11,008
Common shares issued to rabbi trust	30	30	(101)	(85)	28	30
Ending Balance	10,940	10,910	10,880	10,981	11,066	11,038	10,940	10,981
Paid In Capital [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	40,385	39,747	38,854	36,200	35,146	34,401	38,854	34,401
Share-based compensation	1,458	612	976	1,388	1,028	928
Issuance of common shares	204	26		54	26	(18)
Cash dividends declared per share			(83)			(165)
Ending Balance	42,047	40,385	39,747	37,642	36,200	35,146	42,047	37,642
Retained Earnings [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	365,443	355,984	353,292	341,804	334,947	334,170	353,292	334,170
Net income	12,954	10,481	3,698	7,951	7,904	1,824
Share-based compensation		(26)	(43)	(43)	(43)	(36)
Cash dividends declared per share	(1,013)	(996)	(963)	(1,002)	(1,004)	(1,011)
Ending Balance	377,384	365,443	355,984	348,710	341,804	334,947	377,384	348,710
Treasury Stock [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	(86,097)	(83,086)	(79,106)	(76,030)	(74,574)	(72,280)	(79,106)	(72,280)
Purchase of common shares	(1,223)	(3,011)	(3,980)	(751)	(1,456)	(2,294)
Ending Balance	(87,320)	(86,097)	(83,086)	(76,781)	(76,030)	(74,574)	(87,320)	(76,781)
Cumulative Translation Adjustment [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	(63,091)	(68,563)	(51,682)	(51,257)	(52,357)	(53,710)	(51,682)	(53,710)
Foreign currency translation adjustment	2,949	5,472	(16,881)	(5,897)	1,100	1,353
Ending Balance	(60,142)	(63,091)	(68,563)	(57,154)	(51,257)	(52,357)	(60,142)	(57,154)
Unrecognized Pension Benefit Cost [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	(5,482)	(5,573)	(5,671)	(5,687)	(5,780)	(5,873)	(5,671)	(5,873)
Recognized net actuarial gain, net of tax provision	75	91	98	108	93	93
Ending Balance	(5,407)	(5,482)	(5,573)	(5,579)	(5,687)	(5,780)	(5,407)	(5,579)
Total Preformed Line Products, Company Equity [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	264,161	251,512	268,535	257,852	250,203	249,370	268,535	249,370
Net income	12,954	10,481	3,698	7,951	7,904	1,824
Foreign currency translation adjustment	2,949	5,472	(16,881)	(5,897)	1,100	1,353
Recognized net actuarial gain, net of tax provision	75	91	98	108	93	93
Total comprehensive income	15,978	16,044	(13,085)	2,162	9,097	3,270
Share-based compensation	1,458	586	933	1,345	985	892
Purchase of common shares	(1,223)	(3,011)	(3,980)	(751)	(1,456)	(2,294)
Issuance of common shares	214	26	155	57	27	141
Common shares issued to rabbi trust	0	0	0	0	0	0
Cash dividends declared per share	(1,013)	(996)	(1,046)	(1,002)	(1,004)	(1,176)
Ending Balance	279,575	264,161	251,512	259,663	257,852	250,203	279,575	259,663
Noncontrolling Interests [Member]
Stockholders Equity Note [Line Items]
Beginning Balance	(5)	(12)	33	(39)	0	0	33	0
Net income	8	7	(45)	93	(39)
Total comprehensive income	8	7	(45)	93	(39)	0
Ending Balance	$ 3	$ (5)	$ (12)	$ 54	$ (39)	$ 0	$ 3	$ 54

Shareholders Equity - Summary_2

Shareholders Equity - Summary of Changes in Shareholders Equity (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Stockholders Equity Note [Line Items]
Tax provision (benefit) for recognized net actuarial loss (gain)	$ (23)			$ (32)			$ (84)	$ (95)
Unrecognized Pension Benefit Cost [Member]
Stockholders Equity Note [Line Items]
Tax provision (benefit) for recognized net actuarial loss (gain)	$ 23	$ 39	$ 31	$ 32	$ 31	$ 32
Treasury Stock [Member]
Stockholders Equity Note [Line Items]
Purchase of common shares	24,335	60,608	75,246	15,150	29,724	40,891
Common Shares [Member]
Stockholders Equity Note [Line Items]
Issuance of common shares	622	603	77,381	1,262	525	78,821
Paid In Capital [Member]
Stockholders Equity Note [Line Items]
Issuance of common shares	622	603	77,381	1,262	525	78,821
Common Shares Issued to Rabbi Trust [Member]
Stockholders Equity Note [Line Items]
Common shares issued to rabbi trust	622	603	3,358	3,219	525	705
Deferred Compensation Liability [Member]
Stockholders Equity Note [Line Items]
Common shares issued to rabbi trust	622	603	3,358	3,219	525	705
Retained Earnings [Member]
Stockholders Equity Note [Line Items]
Cash dividends declared per share	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.20

Pension Plans - Components of N

Pension Plans - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Compensation And Retirement Disclosure [Abstract]
Service cost	$ 0	$ 130	$ 0	$ 225
Interest cost	325	350	976	1,058
Expected return on plan assets	(563)	(483)	(1,688)	(1,459)
Recognized net actuarial loss	98	140	348	390
Net periodic pension cost (benefit)	$ (140)	$ 137	$ (364)	$ 214

Pension Plans - Additional Info

Pension Plans - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2020
Pension And Other Employee Benefit Plans [Line Items]
Contribution to pension plan		$ 300,000
Scenario Forecast [Member]
Pension And Other Employee Benefit Plans [Line Items]
Contribution to pension plan	$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income ("AOCI") - Summary of Total Changes in AOCI by Component, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 268,535
Other comprehensive loss before reclassifications:
(Loss) gain on foreign currency translation adjustment	$ 2,949	$ (5,897)	(8,460)	$ (3,444)
Amounts reclassified from AOCI:
Amortization of defined benefit pension actuarial gain	75	108	264	294
Other comprehensive (income) loss, net of tax	3,024	(5,789)	(8,196)	(3,150)
Ending Balance	279,575		279,575
Unrecognized Pension Benefit Cost [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(5,482)	(5,687)	(5,671)	(5,873)
Other comprehensive loss before reclassifications:
(Loss) gain on foreign currency translation adjustment	0	0	0	0
Amounts reclassified from AOCI:
Amortization of defined benefit pension actuarial gain	75	108	264	294
Other comprehensive (income) loss, net of tax	75	108	264	294
Ending Balance	(5,407)	(5,579)	(5,407)	(5,579)
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(63,091)	(51,257)	(51,682)	(53,710)
Other comprehensive loss before reclassifications:
(Loss) gain on foreign currency translation adjustment	2,949	(5,897)	(8,460)	(3,444)
Amounts reclassified from AOCI:
Amortization of defined benefit pension actuarial gain	0	0	0	0
Other comprehensive (income) loss, net of tax	2,949	(5,897)	(8,460)	(3,444)
Ending Balance	(60,142)	(57,154)	(60,142)	(57,154)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(68,573)	(56,944)	(57,353)	(59,583)
Amounts reclassified from AOCI:
Ending Balance	$ (65,549)	$ (62,733)	$ (65,549)	$ (62,733)

Computation of Earnings Per S_3

Computation of Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator
Net income	$ 12,954	$ 7,951	$ 27,133	$ 17,679
Determination of shares
Weighted-average common shares outstanding	4,917	5,024	4,963	5,039
Dilutive effect - share-based awards	94	95	35	38
Diluted weighted-average common shares outstanding	5,011	5,119	4,998	5,077
Earnings per common share
Basic	$ 2.63	$ 1.58	$ 5.47	$ 3.51
Diluted	$ 2.59	$ 1.55	$ 5.43	$ 3.48

Computation of Earnings Per S_4

Computation of Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from calculation of earnings per share	45,500	15,000	35,364	15,000

Goodwill and Other Intangible_2

Goodwill and Other Intangibles - Finite and Indefinite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finite-lived intangible assets
Gross Carrying Amount	$ 30,651	$ 30,648
Accumulated Amortization	(16,725)	(15,532)
Indefinite-lived intangible assets Goodwill	27,689	27,840
Patents [Member]
Finite-lived intangible assets
Gross Carrying Amount	4,806	4,806
Accumulated Amortization	(4,806)	(4,806)
Land Use Rights [Member]
Finite-lived intangible assets
Gross Carrying Amount	1,262	1,128
Accumulated Amortization	(437)	(331)
Trademarks [Member]
Finite-lived intangible assets
Gross Carrying Amount	1,675	1,718
Accumulated Amortization	(1,397)	(1,358)
Technology [Member]
Finite-lived intangible assets
Gross Carrying Amount	7,173	7,185
Accumulated Amortization	(2,142)	(1,708)
Customer Relationships [Member]
Finite-lived intangible assets
Gross Carrying Amount	15,735	15,811
Accumulated Amortization	$ (7,943)	$ (7,329)

Goodwill and Other Intangible_3

Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Finite Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 0.5	$ 0.5	$ 1.3	$ 1.1
2020	0.5		0.5
2021	1.6		1.6
2022	1.6		1.6
2023	1.6		1.6
2024	$ 1.5		$ 1.5
Remaining amortization period			12 years 7 months 6 days
Patents [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			5 years 3 months 18 days
Land Use Rights [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			55 years 7 months 6 days
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			8 years 4 months 24 days
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			10 years 3 months 18 days
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			9 years 8 months 12 days

Goodwill and Other Intangible_4

Goodwill and Other Intangibles - Changes in Carrying Amount of Goodwill by Segment (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)
Goodwill [Line Items]
Beginning Balance	$ 27,840
Currency translation	(151)
Ending Balance	27,689
USA [Member]
Goodwill [Line Items]
Beginning Balance	3,078
Currency translation	0
Ending Balance	3,078
The Americas [Member]
Goodwill [Line Items]
Beginning Balance	4,158
Currency translation	(97)
Ending Balance	4,061
EMEA [Member]
Goodwill [Line Items]
Beginning Balance	13,442
Currency translation	34
Ending Balance	13,476
Asia-Pacific [Member]
Goodwill [Line Items]
Beginning Balance	7,162
Currency translation	(88)
Ending Balance	$ 7,074

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)shares	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)Deferralshares	Sep. 30, 2019USD ($)shares	Dec. 31, 2019shares	May 10, 2016shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred shares and held by the rabbi trust	265,508		265,508		267,641
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	800,000		800,000
Long Term Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	100,000		100,000
Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expenses | $	$ 100,000	$ 200,000	$ 300,000	$ 400,000
Compensation cost expected to be recognized over period | $	600,000		$ 600,000
Weighted-average period			1 year 9 months 18 days
Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period			1 year 9 months 18 days
Performance-based compensation expense (income) | $	1,200,000	1,200,000	$ 2,600,000	$ 2,900,000
Remaining compensation expense | $	$ 4,600,000		$ 4,600,000
Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	900,000		900,000
2016 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards						1,000,000
Incentive plan expiry date			May 10, 2026
2016 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards						900,000
2016 Incentive Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards						100,000
Long Term Incentive Plan and 2016 Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under plan vest and expire			5 years
Long Term Incentive Plan and 2016 Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under plan vest and expire			10 years
Long Term Incentive Plan and 2016 Incentive Plan [Member] | After One Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards vesting percentage			50.00%
Long Term Incentive Plan and 2016 Incentive Plan [Member] | After Two Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards vesting percentage			75.00%
Long Term Incentive Plan and 2016 Incentive Plan [Member] | After Three Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards vesting percentage			100.00%
Long Term Incentive Plan Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period			2 years 4 months 24 days
Granted, Number of Shares			25,500	0
Exercised, Number of Shares			3,750	0
Expected compensation cost related to unvested awards not yet recognized | $	$ 400,000		$ 400,000
Long Term Incentive Plan Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expenses | $	$ 100,000	$ 100,000	$ 100,000	$ 100,000
Deferred Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of deferrals | Deferral			2

Share-Based Compensation - Summ

Share-Based Compensation - Summary of RSUs Outstanding Under LTIP (Detail)	9 Months Ended
	Sep. 30, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested as of January 1, 2020	211,634
Granted	81,086
Vested	(73,053)
Forfeited	(13,814)
Nonvested as of September 30 , 2020	205,853
Nonvested as of January 1, 2020, Weighted-Average Grant-Date Fair Value | $ / shares	$ 53.68
Weighted-Average Grant-Date Fair Value, Granted | $ / shares	55.63
Weighted-Average Grant-Date Fair Value, Vested | $ / shares	54.60
Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares	61.29
Nonvested as of September 30, 2020, Weighted-Average Grant-Date Fair Value | $ / shares	$ 61.09
Performance and Service Required [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested as of January 1, 2020	196,342
Granted	71,539
Vested	(73,053)
Forfeited	(11,051)
Nonvested as of September 30 , 2020	183,777
Service Required [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested as of January 1, 2020	15,292
Granted	9,547
Vested	0
Forfeited	(2,763)
Nonvested as of September 30 , 2020	22,076

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Option Activity under Company's Plan - Long Term Incentive Plan (Detail) - Long Term Incentive Plan Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1, 2020, Number of Shares	31,750
Granted, Number of Shares	25,500	0
Exercised, Number of Shares	(3,750)	0
Forfeited, Number of Shares	(1,250)
Outstanding (vested and expected to vest) at September 30,2020, Number of Shares	52,250
Exercisable at September 30, 2020, Number of Shares	19,250
Outstanding at January 1, 2020, Weighted Average Exercise Price per Share	$ 58.77
Granted, Weighted Average Exercise Price per Share	48.13
Exercised, Weighted Average Exercise Price per Share	48
Forfeited, Weighted Average Exercise Price per Share	48
Outstanding (vested and expected to vest) at September 30, 2020, Weighted Average Exercise Price per Share	54.61
Exercisable at September 30, 2020, Weighted Average Exercise Price per Share	$ 60.76
Outstanding (vested and expected to vest) at September 30, 2020, Weighted Average Remaining Contractual Term	7 years 8 months 12 days
Exercisable at September 30, 2020, Weighted Average Remaining Contractual Term	4 years 6 months
Outstanding (vested and expected to vest) at September 30, 2020, Aggregate Intrinsic Value	$ 44
Exercisable at September 30, 2020, Aggregate Intrinsic Value	$ 29

Fair Value of Financial Asset_3

Fair Value of Financial Assets and Liabilities - Summary of Assets and Liabilities Recorded and Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency forward contracts	$ 646
Total Assets	646
Supplemental profit sharing plan	6,140	$ 6,059
Foreign currency forward contracts	(277)
Earn-out	204	581
Total Liabilities	6,067	6,640
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency forward contracts	0
Total Assets	0
Supplemental profit sharing plan	0	0
Foreign currency forward contracts	0
Earn-out	0	0
Total Liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency forward contracts	646
Total Assets	646
Supplemental profit sharing plan	6,140	6,059
Foreign currency forward contracts	(277)
Earn-out	0	0
Total Liabilities	6,140	6,059
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency forward contracts	0
Total Assets	0
Supplemental profit sharing plan	0	0
Foreign currency forward contracts	0
Earn-out	204	581
Total Liabilities	$ 204	$ 581

Fair Value of Financial Asset_4

Fair Value of Financial Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency forward contracts Maturity Period			90 days
Foreign currency transaction gains	$ 100	$ 100	$ 1,000	$ 100
Supplemental profit sharing plan	6,140		6,140		$ 6,059
Contingent liabilities	204		204		581
Other Noncurrent Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent liabilities	200		200		600
Profit Sharing Plan [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Supplemental profit sharing plan	$ 6,100		$ 6,100		$ 6,100

Recently Adopted Accounting P_2

Recently Adopted Accounting Pronouncements - Additional Information (Detail)	Sep. 30, 2020
Accounting Standards Update 2018-13 [Member]
Recently Adopted Accounting Pronouncements [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, adoption date	Mar. 31, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]	true
Accounting Standards Update 2016-13 [Member]
Recently Adopted Accounting Pronouncements [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]	true

Segment Information - Summary o

Segment Information - Summary of Company's Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Net sales
Net sales	$ 127,463	$ 119,217	$ 347,944	$ 331,212
Income taxes
Income taxes	4,458	3,213	9,306	6,302
Net income attributable to Preformed Line Products Company shareholders
Net income	12,954	7,951	27,133	17,679
Assets
Identifiable assets	452,041		452,041		$ 433,571
PLP-USA [Member]
Net sales
Net sales	53,027	47,617	153,595	135,411
Income taxes
Income taxes	2,020	1,333	4,891	2,585
Net income attributable to Preformed Line Products Company shareholders
Net income	6,753	3,246	16,439	7,442
Assets
Identifiable assets	143,935		143,935		127,428
The Americas [Member]
Net sales
Net sales	19,914	19,663	54,641	51,142
Income taxes
Income taxes	875	901	2,321	1,948
Net income attributable to Preformed Line Products Company shareholders
Net income	1,908	2,565	4,598	5,188
Assets
Identifiable assets	69,151		69,151		71,908
EMEA [Member]
Net sales
Net sales	27,034	21,132	68,441	59,376
Income taxes
Income taxes	1,205	496	1,735	574
Net income attributable to Preformed Line Products Company shareholders
Net income	2,912	853	5,495	2,171
Assets
Identifiable assets	107,362		107,362		97,126
Asia-Pacific [Member]
Net sales
Net sales	27,488	30,805	71,267	85,283
Income taxes
Income taxes	358	483	359	1,195
Net income attributable to Preformed Line Products Company shareholders
Net income	1,381	1,287	601	2,878
Assets
Identifiable assets	131,593		131,593		$ 137,109
Intersegment Eliminations [Member]
Net sales
Net sales	(10,883)	(9,496)	(28,186)	(25,370)
Intersegment Eliminations [Member] | PLP-USA [Member]
Net sales
Net sales	(2,786)	(3,440)	(7,787)	(7,868)
Intersegment Eliminations [Member] | The Americas [Member]
Net sales
Net sales	(3,029)	(2,149)	(7,706)	(5,905)
Intersegment Eliminations [Member] | EMEA [Member]
Net sales
Net sales	(892)	(335)	(2,513)	(898)
Intersegment Eliminations [Member] | Asia-Pacific [Member]
Net sales
Net sales	$ (4,176)	$ (3,572)	$ (10,180)	$ (10,699)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate	26.00%	29.00%	26.00%	26.00%
U.S. federal statutory tax rate	21.00%	21.00%	21.00%	21.00%
Changes in the valuation allowances			$ 0	$ 0

Product Warranty Reserve - Roll

Product Warranty Reserve - Roll Forward of Product Warranty Reserve (Detail) - Warranty Reserves [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of period balance	$ 1,309	$ 928
Additions charged to income	247	692
Warranty usage	(37)	(293)
Currency translation	(76)	(46)
End of period balance	$ 1,443	$ 1,281

Debt Arrangements - Additional

Debt Arrangements - Additional Information (Detail) € in Millions	Jun. 26, 2020USD ($)	Apr. 17, 2020USD ($)	Aug. 14, 2019USD ($)	Apr. 25, 2019USD ($)	Aug. 22, 2016	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020EUR (€)	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Debt to earnings before Interest, Taxes and Depreciation ratio		225.00%
Line of credit utilized borrowing capacity						$ 30,100,000
Line of credit remaining borrowing capacity						34,900,000
Letters of credit outstanding amount						100,000
Proceeds from long-term debt						$ 68,789,000	$ 70,730,000
U.S. [Member]
Debt Instrument [Line Items]
Interest rate for Line of credit						1.273%		1.273%
Asia Pacific [Member]
Debt Instrument [Line Items]
Restricted cash used to secure bank debt						$ 0			$ 300,000
LIBOR [Member]
Debt Instrument [Line Items]
Interest rate of LIBOR plus		1.125%
LIBOR [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate of LIBOR plus		1.50%
Austrian Subsidiary [Member]
Debt Instrument [Line Items]
Increased borrowing capacity		$ 65,000,000
Extended debt instrument date		Jun. 30, 2024			Jun. 30, 2021
Line of credit utilized borrowing capacity						$ 1,100,000		€ 1
Expiration date						May 31, 2021
Austrian Subsidiary [Member] | Line Credit [Member]
Debt Instrument [Line Items]
Proceeds from long-term debt	$ 600,000
Interest rate	1.308%
Polish Subsidiary [Member]
Debt Instrument [Line Items]
Borrowings						$ 6,300,000
Interest rate for Line of credit						1.325%		1.325%
Polish Subsidiary [Member] | Warsaw Interbank Offer Rate [Member]
Debt Instrument [Line Items]
Interest rate of LIBOR plus						1.125%
Expiration date						Jun. 30, 2024
Australian subsidiary [Member]
Debt Instrument [Line Items]
Borrowings						$ 5,300,000
Expiration date						Jun. 30, 2024
Interest rate for Line of credit						1.215%		1.215%
Indonesian Subsidiary [Member]
Debt Instrument [Line Items]
Line of credit utilized borrowing capacity						$ 6,900,000
Expiration date				Apr. 30, 2024
Proceeds from long-term debt				$ 8,000,000
Interest rate				3.501%
Outstanding letters of credit, current						800,000
New Zealand Subsidiary {Member}
Debt Instrument [Line Items]
Expiration date			Aug. 26, 2021
Proceeds from long-term debt			$ 5,300,000
Interest rate			3.90%
Outstanding letters of credit, current						$ 4,900,000

Leases - Additional Information

Leases - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Leases [Line Items]
Leases, term of description	the leases in effect were related to land, buildings, vehicles, office equipment and other production equipment under operating leases with lease terms of up to 99 years.
Finance lease, weighted average remaining lease term	2 years 8 months 12 days
Operating lease, weighted average remaining lease term	17 years 6 months
Operating lease, weighted average discount rate, percent	4.55%
Finance lease, weighted average discount rate, percent	4.19%
Total minimum sublease rentals under noncancelable subleases	$ 2.9
Maximum [Member]
Leases [Line Items]
Leases, term of contract	99 years

Leases - Summary of Components

Leases - Summary of Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Components of lease expense
Operating lease cost	$ 751	$ 859	$ 2,193	$ 2,338
Finance lease cost
Amortization of right-of-use assets	15	17	47	51
Interest on lease liabilities	1	2	6	8
Total lease cost	$ 767	$ 878	$ 2,246	$ 2,397

Leases - Schedule of Future Mat

Leases - Schedule of Future Maturities of Lease Liabilities (Detail) $ in Thousands	Sep. 30, 2020USD ($)
Operating Leases
2020	$ 668
2021	2,408
2022	1,905
2023	1,343
2024 and thereafter	10,003
Total lease payments	16,327
Less amount of lease payment representing interest	5,585
Total present value of lease payments	10,742
Finance Leases
2020	30
2021	60
2022	40
2023	36
2024 and thereafter	6
Total lease payments	172
Less amount of lease payment representing interest	9
Total present value of lease payments	$ 163

Leases - Summary of Supplementa

Leases - Summary of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating and financing leases	$ 2,100	$ 4,618
Financing cash flows from finance leases	$ 87	$ 74

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - $ / shares	Feb. 05, 2020	Jan. 02, 2020
Retired Officer [Member]
Related Party Transaction [Line Items]
Purchase of shares		1,157
Shares price per share		$ 67.71
Number of trading days to be considered for average price of stock repurchased		30 days
Current Officers and Retired Officer [Member]
Related Party Transaction [Line Items]
Purchase of shares	39,208
Shares price per share	$ 58.65
Number of trading days to be considered for average price of stock repurchased	30 days

Business Combinations - Additio

Business Combinations - Additional Information (Detail) $ in Thousands, € in Millions	Apr. 01, 2019USD ($)	Feb. 28, 2019USD ($)	Feb. 28, 2019EUR (€)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Payments of business, net of cash acquired				$ 0	$ 18,894
Goodwill				27,689		$ 27,840
Intangibles - net				13,926		$ 15,116
SubCon [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired		100.00%
Total purchase price		$ 10,100
Payments of business, net of cash acquired		1,900
Goodwill		6,600
Intangibles - net		4,700
Purchase price estimated contingent liability		$ 600
Potential maximum payment | €			€ 4
Remeasurement period		4 years	4 years
SubCon [Member] | Other Noncurrent Liabilities [Member]
Business Acquisition [Line Items]
Business combination earnout liability				$ 200
SubCon [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful lives		10 years	10 years
SubCon [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful lives		11 years	11 years
MICOS Telecom [Member]
Business Acquisition [Line Items]
Total purchase price	$ 8,800
Payments of business, net of cash acquired	500
Goodwill	5,600
Intangibles - net	$ 3,400
Useful lives	12 years
Percentage of remaining voting interests deferred consideration payable	10.00%
MICOS Telecom [Member] | Other Noncurrent Liabilities [Member]
Business Acquisition [Line Items]
Business combination hold-back liability	$ 1,500
Business combination hold-back liability payable term	2 years
Business combination deferred consideration	$ 900

Business Combinations - Summary

Business Combinations - Summary of Final Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets acquired
Goodwill	$ 27,689	$ 27,840
SubCon and MICOS Telcom [Member]
Assets acquired
Current assets, net of cash	5,976
Property, plant and equipment	1,189
Goodwill	12,132
Finite-lived intangible assets	8,092
Other long-term assets	1,883
Total assets acquired	29,272
Liabilities assumed	(10,378)
Net assets acquired	$ 18,894