Standard Motor Products (SMP) 10-Q 5 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 02, 2021
Cover [Abstract]
Entity Registrant Name	Standard Motor Products, Inc.
Entity Central Index Key	0000093389
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Document Transition Report	false
Entity File Number	001-04743
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	11-1362020
Entity Address, Address Line One	37-18 Northern Blvd.
Entity Address, City or Town	Long Island City
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11101
City Area Code	718
Local Phone Number	392-0200
Title of 12(b) Security	Common Stock, par value $2.00 per share
Trading Symbol	SMP
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		22,220,630

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	[1]	$ 342,076	$ 247,939	$ 618,629	$ 502,241
Cost of sales		242,804	183,581	435,573	367,488
Gross profit		99,272	64,358	183,056	134,753
Selling, general and administrative expenses		62,347	48,328	116,807	104,201
Restructuring and integration expenses		0	9	0	214
Other income, net		0	0	0	6
Operating income		36,925	16,021	66,249	30,344
Other non-operating income, net		832	602	1,467	78
Interest expense		495	772	704	1,645
Earnings from continuing operations before taxes		37,262	15,851	67,012	28,777
Provision for income taxes		9,248	4,009	16,834	7,314
Earnings from continuing operations		28,014	11,842	50,178	21,463
Loss from discontinued operations, net of income taxes		(853)	(875)	(2,017)	(1,869)
Net earnings		27,161	10,967	48,161	19,594
Net earnings attributable to noncontrolling interest		19	0	19	0
Net earnings attributable to SMP		27,142	10,967	48,142	19,594
Net earnings attributable to SMP
Earnings from continuing operations		27,995	11,842	50,159	21,463
Discontinued operations		(853)	(875)	(2,017)	(1,869)
Net earnings attributable to SMP		$ 27,142	$ 10,967	$ 48,142	$ 19,594
Net earnings per common share - Basic:
Earnings from continuing operations (in dollars per share)		$ 1.26	$ 0.53	$ 2.25	$ 0.96
Discontinued operations (in dollars per share)		(0.04)	(0.04)	(0.09)	(0.08)
Net earnings per common share attributable to SMP		1.22	0.49	2.16	0.88
Net earnings per common share - Diluted:
Earnings from continuing operations (in dollars per share)		1.23	0.52	2.21	0.94
Discontinued operations (in dollars per share)		(0.03)	(0.04)	(0.09)	(0.08)
Net earnings per common share attributable to SMP		1.20	0.48	2.12	0.86
Dividend declared per share (in dollars per share)		$ 0.25	$ 0	$ 0.50	$ 0.25
Average number of common shares (in shares)		22,198,545	22,330,476	22,257,922	22,384,281
Average number of common shares and dilutive common shares (in shares)		22,686,384	22,718,680	22,741,171	22,793,606
[1]	Segment net sales include intersegment sales in our Engine Management and Temperature Control segments.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net earnings	$ 27,161	$ 10,967	$ 48,161	$ 19,594
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	2,477	1,877	561	(4,424)
Pension and postretirement plans	(4)	(4)	(9)	(8)
Total other comprehensive income, net of tax	2,473	1,873	552	(4,432)
Total Comprehensive income	29,634	12,840	48,713	15,162
Comprehensive income (loss) attributable to noncontrolling interest, net of tax:
Net earnings	19	0	19	0
Foreign currency translation adjustments	(22)	0	(22)	0
Comprehensive income (loss) attributable to noncontrolling interest, net of tax	(3)	0	(3)	0
Comprehensive income attributable to SMP	$ 29,637	$ 12,840	$ 48,716	$ 15,162

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 27,453	$ 19,488
Accounts receivable, less allowances for discounts and doubtful accounts of $6,218 and $5,822 for 2021 and 2020, respectively	211,778	198,039
Inventories	404,876	345,502
Unreturned customer inventories	22,070	19,632
Prepaid expenses and other current assets	14,492	15,875
Total current assets	680,669	598,536
Property, plant and equipment, net of accumulated depreciation of $222,302 and $214,394 for 2021 and 2020, respectively	96,762	89,105
Operating lease right-of-use assets	39,095	29,958
Goodwill	126,893	77,837
Other intangibles, net	105,462	54,004
Deferred income taxes	38,915	44,770
Investments in unconsolidated affiliates	42,070	40,507
Other assets	25,409	21,823
Total assets	1,155,275	956,540
CURRENT LIABILITIES:
Notes payable	135,000	10,000
Current portion of other debt	2,397	135
Accounts payable	119,632	100,018
Sundry payables and accrued expenses	42,410	47,078
Accrued customer returns	53,062	40,982
Accrued core liability	23,318	22,014
Accrued rebates	41,885	46,437
Payroll and commissions	29,363	35,938
Total current liabilities	447,067	302,602
Long-term debt	80	97
Noncurrent operating lease liabilities	30,495	22,450
Other accrued liabilities	28,481	25,929
Accrued asbestos liabilities	54,035	55,226
Total liabilities	560,158	406,304
Commitments and contingencies
Stockholders' equity:
Common stock - par value $2.00 per share: Authorized - 30,000,000 shares; issued 23,936,036 shares	47,872	47,872
Capital in excess of par value	107,062	105,084
Retained earnings	500,620	463,612
Accumulated other comprehensive income	(5,102)	(5,676)
Treasury stock - at cost (1,715,406 shares and 1,586,923 shares in 2021 and 2020, respectively)	(66,836)	(60,656)
Total SMP stockholders' equity	583,616	550,236
Noncontrolling interest	11,501	0
Total stockholders' equity	595,117	550,236
Total liabilities and stockholders' equity	$ 1,155,275	$ 956,540

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
CURRENT ASSETS:
Accounts receivable, allowances for discounts and doubtful accounts	$ 6,218	$ 5,822
Property, plant and equipment, accumulated depreciation	$ 222,302	$ 214,394
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 2	$ 2
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	23,936,036	23,936,036
Treasury stock - at cost (in shares)	1,715,406	1,586,923

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 48,161	$ 19,594
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	13,100	12,877
Amortization of deferred financing cost	114	114
Increase to allowance for doubtful accounts	321	376
Increase (decrease) to inventory reserves	(463)	3,048
Equity income from joint ventures	(1,156)	(429)
Employee stock ownership plan allocation	1,257	1,150
Stock-based compensation	4,381	3,306
(Increase) decrease in deferred income taxes	(2,344)	232
Loss on discontinued operations, net of tax	2,017	1,869
Change in assets and liabilities:
(Increase) in accounts receivable	(4,715)	(38,623)
(Increase) decrease in inventories	(46,682)	12,725
Decrease in prepaid expenses and other current assets	3,220	5,664
Increase (decrease) in accounts payable	16,097	(21,804)
Increase (decrease) in sundry payables and accrued expenses	(6,491)	2,085
Net change in other assets and liabilities	(3,664)	(3,069)
Net cash provided by (used in) operating activities	23,153	(885)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of and investments in businesses	(109,267)	0
Capital expenditures	(11,709)	(9,026)
Other investing activities	2	6
Net cash used in investing activities	(120,974)	(9,020)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings under line-of-credit agreements	125,000	32,540
Net borrowings of other debt and capital lease obligations	2,250	1,809
Purchase of treasury stock	(11,096)	(8,726)
Increase in overdraft balances	694	1,818
Dividends paid	(11,134)	(5,615)
Net cash provided by financing activities	105,714	21,826
Effect of exchange rate changes on cash	72	217
Net increase in cash and cash equivalents	7,965	12,138
CASH AND CASH EQUIVALENTS at beginning of period	19,488	10,372
CASH AND CASH EQUIVALENTS at end of period	27,453	22,510
Cash paid during the period for:
Interest	481	1,561
Income taxes	$ 12,803	$ 1,030

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total SMP [Member]	Non-Controlling Interest [Member]	Total
Balance at beginning of period at Dec. 31, 2019	$ 47,872	$ 102,742	$ 417,437	$ (8,589)	$ (55,234)	$ 504,228	$ 0	$ 504,228
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	0	0	19,594	0	0	19,594	0	19,594
Other comprehensive income, net of tax	0	0	0	(4,432)	0	(4,432)	0	(4,432)
Cash dividends paid	0	0	(5,615)	0	0	(5,615)	0	(5,615)
Purchase of treasury stock	0	0	0	0	(8,726)	(8,726)	0	(8,726)
Stock-based compensation	0	756	0	0	2,550	3,306	0	3,306
Employee Stock Ownership Plan	0	630	0	0	1,671	2,301	0	2,301
Balance at end of period at Jun. 30, 2020	47,872	104,128	431,416	(13,021)	(59,739)	510,656	0	510,656
Balance at beginning of period at Mar. 31, 2020	47,872	104,245	420,449	(14,894)	(61,059)	496,613	0	496,613
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	0	0	10,967	0	0	10,967	0	10,967
Other comprehensive income, net of tax	0	0	0	1,873	0	1,873	0	1,873
Cash dividends paid	0	0	0	0	0	0	0	0
Purchase of treasury stock	0	0	0	0	0	0	0	0
Stock-based compensation	0	(117)	0	0	1,320	1,203	0	1,203
Employee Stock Ownership Plan	0	0	0	0	0	0	0	0
Balance at end of period at Jun. 30, 2020	47,872	104,128	431,416	(13,021)	(59,739)	510,656	0	510,656
Balance at beginning of period at Dec. 31, 2020	47,872	105,084	463,612	(5,676)	(60,656)	550,236	0	550,236
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest acquired	0	0	0	0	0	0	11,504	11,504
Net earnings	0	0	48,142	0	0	48,142	19	48,161
Other comprehensive income, net of tax	0	0	0	574	0	574	(22)	552
Cash dividends paid	0	0	(11,134)	0	0	(11,134)	0	(11,134)
Purchase of treasury stock	0	0	0	0	(11,096)	(11,096)	0	(11,096)
Stock-based compensation	0	1,844	0	0	2,537	4,381	0	4,381
Employee Stock Ownership Plan	0	134	0	0	2,379	2,513	0	2,513
Balance at end of period at Jun. 30, 2021	47,872	107,062	500,620	(5,102)	(66,836)	583,616	11,501	595,117
Balance at beginning of period at Mar. 31, 2021	47,872	106,366	479,024	(7,597)	(68,725)	556,940	0	556,940
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest acquired	0	0	0	0	0	0	11,504	11,504
Net earnings	0	0	27,142	0	0	27,142	19	27,161
Other comprehensive income, net of tax	0	0	0	2,495	0	2,495	(22)	2,473
Cash dividends paid	0	0	(5,546)	0	0	(5,546)	0	(5,546)
Purchase of treasury stock	0	0	0	0	0	0	0	0
Stock-based compensation	0	696	0	0	1,889	2,585	0	2,585
Employee Stock Ownership Plan	0	0	0	0	0	0	0	0
Balance at end of period at Jun. 30, 2021	$ 47,872	$ 107,062	$ 500,620	$ (5,102)	$ (66,836)	$ 583,616	$ 11,501	$ 595,117

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2021
Basis of Presentation [Abstract]
Basis of Presentation	Note 1. Basis of Presentation Standard Motor Products, Inc. and subsidiaries (referred to hereinafter in these notes to the consolidated financial statements as “we,” “us,” “our,” “SMP,” or the “Company”) is a leading automotive parts manufacturer and distributor for engine management and temperature control systems of motor vehicles in the automotive aftermarket industry with a complementary focus on the heavy duty, industrial equipment and original equipment service markets. The accompanying unaudited financial information should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our Annual Report on Form -K for the year ended December The unaudited consolidated financial statements include our accounts and all domestic and international companies in which we have more than a equity ownership, except in instances where the minority shareholder maintains substantive participating rights, in which case we follow the equity method of accounting. In instances where we have more than a equity ownership and the minority shareholder does not maintain substantive participating rights, our consolidated financial statements include the accounts of the company on a consolidated basis with its net income and equity reported at amounts attributable to both our equity position and that of the noncontrolling interest. Investments in unconsolidated affiliates are accounted for on the equity method, as we do not have a controlling financial interest but have the ability to exercise significant influence. All significant inter-company items have been eliminated. The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form -Q and Rule - of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. The results of operations for the interim periods are not necessarily indicative of the results of operations for the entire year. Reclassification Certain prior period amounts in the accompanying consolidated financial statements and related notes have been reclassified to conform to the 2021 presentation.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies The preparation of consolidated annual and quarterly financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amount of assets and liabilities, the disclosure of contingent assets and liabilities at the date of our consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. We have made a number of estimates and assumptions in the preparation of these consolidated financial statements. We can give no assurance that actual results will not differ from those estimates. Although we do not believe that there is a reasonable likelihood that there will be a material change in the future estimates, or in the assumptions that we use in calculating the estimates, the uncertain future effects, if any, of the COVID- pandemic, and other unforeseen changes in the industry, or business, could materially impact the estimates, and may have a material adverse effect on our business, financial condition and results of operations. Some of the more significant estimates include allowances for doubtful accounts, cash discounts, valuation of inventory, valuation of long-lived assets, goodwill and other intangible assets, depreciation and amortization of long-lived assets, product liability exposures, asbestos, environmental and litigation matters, valuation of deferred tax assets, share based compensation and sales returns and other allowances. There have been no material changes to our critical accounting policies and estimates from the information provided in Note of the notes to our consolidated financial statements in our Annual Report on Form -K for the year ended December Recently Issued Accounting Pronouncements Standards that were adopted Standard Description Date of adoption Effects on the financial statements or other significant matters ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes This standard is intended to simplify the accounting for income taxes by removing certain ASC Topic 740 exceptions in performing intra-period tax allocations among income statement components, in calculating certain deferred tax liabilities related to outside basis differences, and in calculating income taxes in interim periods with year-to-date losses. In addition, this standard is also intended to improve consistency and add simplification by clarifying and amending the reporting of franchise taxes and other taxes partially based on income, the recognition of deferred income taxes related to the step-up in tax basis goodwill, and the reporting in interim periods of the recognition of the enactment of tax laws or rate changes. January The adoption of the technical clarifications in the standard did not materially impact our accounting for income taxes, our consolidated financial statements and related disclosures. Standards that are not yet adopted as of June T he following table provides a brief description of recently issued accounting pronouncements that have not yet been adopted as of June 30, 2021, and that could have an impact on our financial statements: Standard Description Date of adoption / Effective date Effects on the financial statements or other significant matters A SU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting T his standard is intended to provide optional guidance for a limited time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The new standard is applicable to contracts that reference LIBOR, or another reference rate, expected to be discontinued due to reference rate reform. E ffective March 12, 2020 through December 31, 2022 The new standard may be applied as of the beginning of an interim period that includes March 12, 2020 through December 31, 2022. As certain of our contracts reference LIBOR, including our revolving credit facility and supply chain financing arrangements, we are currently reviewing the optional guidance in the standard to determine its impact upon the discontinuance of LIBOR. At this time, we do not believe that the new guidance, nor the discontinuance of LIBOR, will have a material impact on our consolidated financial statements and related disclosures.

Business Acquisitions and Inves

Business Acquisitions and Investments	6 Months Ended
	Jun. 30, 2021
Business Acquisitions and Investments [Abstract]
Business Acquisitions and Investments	Note 3. Business Acquisitions and Investments 2021 Business Acquisitions Acquisition of Capital Stock of Trumpet Holdings, Inc. (“Trombetta”) In May we acquired of the capital stock of Trumpet Holdings, Inc., a Delaware corporation, (more commonly known as “Trombetta”), for , subject to certain post-closing adjustments. Trombetta is a leading provider of power switching and power management products to Original Equipment (‘‘OE’’) customers in various markets. The acquired Trombetta business was paid for in cash funded by borrowings under our revolving credit facility with JPMorgan Chase Bank, N.A., as agent, and has manufacturing facilities in Milwaukee, Wisconsin; Sheboygan Falls, Wisconsin; Tijuana, Mexico, as well as a ownership in a joint venture in Hong Kong, with operations in Shanghai and Wuxi, China (“Trombetta Asia, Ltd.”). The acquisition will be reported as part of our Engine Management Segment, The preliminary allocation of purchase price to assets acquired and liabilities assumed is based upon estimates of fair values utilizing customary valuation procedures and techniques, as well as other information compiled by management. While we believe these preliminary estimates provide a reasonable basis for estimating the fair value of the assets acquired and liabilities assumed, and do not anticipate that any adjustments to these values will be significant, we will continue to evaluate available information prior to finalization of the amounts, particularly the amounts related to intangible assets, deferred income taxes, noncontrolling interests and the final agreement of post-closing adjustments. The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed (in s): Purchase price $ 111,741 Assets acquired and liabilities assumed: Receivables $ 9,173 Inventory 12,460 Other current assets (1) 5,193 Property, plant and equipment, net 4,939 Operating lease right-of-use assets 3,847 Intangible assets 54,700 Goodwill 49,028 Current liabilities (4,820 ) Noncurrent operating lease liabilities (3,065 ) Deferred income taxes (8,210 ) Subtotal 123,245 Fair value of acquired noncontrolling interest (11,504 ) Net assets acquired $ 111,741 (1) The other current assets balance includes of cash acquired. Intangible assets acquired of consist of customer relationships of that will be amortized on a straight-line basis over the estimated useful life of years; developed technology of that will be amortized on a straight-line basis over the estimated useful life of years; and a trade name of that will be amortized on a straight-line basis over the estimated useful life of years. Goodwill of was allocated to the Engine Management Segment. The goodwill reflects relationships, business specific knowledge and the replacement cost of an assembled workforce associated with personal reputations. The intangible assets and goodwill are not deductible for tax purposes. Revenues from the acquired business included in our consolidated statement of operations from the acquisition date through June were . Acquisition of Particulate Matter Sensor Business of Stoneridge, Inc. In March 2021, we agreed to acquire the soot sensor product lines from Stoneridge, Inc. The product lines to be acquired manufacture sensors used in the exhaust and emission systems of diesel engines. The product lines are located in Stoneridge’s facilities in Lexington, Ohio and Tallinn, Estonia. We are not acquiring these facilities, nor any of Stoneridge’s employees, and will be relocating the production lines to our engine management plants in Independence, Kansas and Bialystok, Poland, respectively. The acquisition, to be reported as part of our Engine Management Segment, is an excellent fit for our strategy of expansion into the OE heavy duty market. Customer relationships to be acquired include Volvo, CNHi and Hino. The product lines located in Stoneridge’s facility in Lexington, Ohio were acquired in March 2021 for $ million, . The assets acquired include inventory, machinery & equipment and certain intangible assets. The product lines at Stoneridge’s Tallinn, Estonia facility will be acquired at a future date for approximately $ ,000. Tallinn, Estonia assets to be acquired consist solely of machinery & equipment. T he following table presents the allocation of the purchase price to the assets acquired and liabilities assumed through June 30, 2021, based on their fair values (in thousands): Purchase Price $ 2,138 Assets acquired and liabilities assumed: Inventory $ 1,032 Machinery and equipment, net 351 Intangible assets 755 Net assets acquired $ 2,138 Intangible assets acquired of approximately $ million consist of customer relationships that will be amortized on a straight-line basis over the estimated useful life of years. Revenues from the acquired business included in our consolidated statement of operations from the acquisition date through June 30, 2021 were $ million.

Restructuring and Integration E

Restructuring and Integration Expenses	6 Months Ended
	Jun. 30, 2021
Restructuring and Integration Expenses [Abstract]
Restructuring and Integration Expenses	Note 4. Restructuring and Integration Expenses The aggregated liabilities included in “sundry payables and accrued expenses” and “other accrued liabilities” in the consolidated balance sheet relating to the restructuring and integration activities as of December 31, 2020 and June 30, 2021 and for the six months ended June 30, 2021, consisted of the following (in thousands): Workforce Reduction Other Exit Costs Total Exit activity liability at December 31, 2020 $ 179 $ — $ 179 Cash payments (72 ) — (72 ) Exit activity liability at June 30, 2021 $ 107 $ — $ 107 Restructuring Costs Plant Rationalization Programs The 2016 Plant Rationalization Program, which included the shutdown and sale of our Grapevine, Texas facility, and the 2017 Orlando Plant Rationalization Program, which included the shutdown our Orlando Florida facility, have been substantially completed. Cash payments made of $ ,000 during the six months ended June 30, 2021, and the remaining aggregate liability of $ ,000 consists of severance payments to former employees terminated in connection with these programs

Sale of Receivables

Sale of Receivables	6 Months Ended
	Jun. 30, 2021
Sale of Receivables [Abstract]
Sale of Receivables	Note 5. Sale of Receivables We are party to several supply chain financing arrangements, in which we may sell certain of our customers’ trade accounts receivable to such customers’ financial institutions. We sell our undivided interests in certain of these receivables at our discretion when we determine that the cost of these arrangements is less than the cost of servicing our receivables with existing debt. Under the terms of the agreements, we retain no rights or interest, have no obligations with respect to the sold receivables, and do not service the receivables after the sale. As such, these transactions are being accounted for as a sale. P ursuant to these agreements, we sold and of receivables during the months and months ended June respectively, and and for the comparable periods in Receivables presented at financial institutions and not yet sold as of June and December were approximately and , respectively, and remained in our accounts receivable balance for those periods. All receivables sold were reflected as a reduction of accounts receivable in the consolidated balance sheet at the time of sale. A charge in the amount of and related to the sale of receivables was included in selling, general and administrative expense in our consolidated statements of operations for the months and months ended June respectively, and and for the comparable periods in . To the extent that these arrangements are terminated, our financial condition, results of operations, cash flows and liquidity could be adversely affected by extended payment terms, delays or failures in collecting trade accounts receivables. The utility of the supply chain financing arrangements also depends upon the LIBOR rate, as it is a component of the discount rate applicable to each arrangement. If the LIBOR rate increases significantly, we may be negatively impacted as we may not be able to pass these added costs on to our customers, which could have a material and adverse effect upon our financial condition, results of operations and cash flows.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2021
Inventories [Abstract]
Inventories	Note 6. Inventories Inventories, which are stated at the lower of cost (determined by means of the first-in, first-out method) and net realizable value, consist of the following: June 30, 2021 December 31, 2020 (In thousands) Finished goods $ 261,627 $ 225,523 Work in process 12,219 10,711 Raw materials 131,030 109,268 Subtotal 404,876 345,502 Unreturned customer inventories 22,070 19,632 Total inventories $ 426,946 $ 365,134

Acquired Intangible Assets

Acquired Intangible Assets	6 Months Ended
	Jun. 30, 2021
Acquired Intangible Assets [Abstract]
Acquired Intangible Assets	Note 7. Acquired Intangible Assets Acquired identifiable intangible assets consist of the following: June 30, 2021 December 31, 2020 (In thousands) Customer relationships $ 151,876 $ 111,701 Patents, developed technology and intellectual property 14,123 723 Trademarks and trade names 8,880 6,980 Non-compete agreements 3,277 3,272 Supply agreements 800 800 Leaseholds 160 160 Total acquired intangible assets 179,116 123,636 Less accumulated amortization (1) (74,336 ) (70,221 ) Net acquired intangible assets $ 104,780 $ 53,415 (1) Applies to all intangible assets, except for trademarks and trade names totaling $2.6 million, which have indefinite useful lives and, as such, are not being amortized. In May 2021, we acquired of the In March 2021, we acquired certain assets and liabilities of the particulate matter sensor product lines from Stoneridge, Inc. Intangible assets acquired of approximately $ million consist of customer relationships that will be amortized on a straight-line basis over the estimated useful life of years. Total amortization expense for acquired intangible assets was $ million and $ million for the three months and six months ended June 30, 2021, respectively, and $ million and $ million for the comparable periods in 2020. Based on the current estimated useful lives assigned to our intangible assets, amortization expense is estimated to be $ million for the remainder of 2021, $ million in 2022, $ million in 2023, $ million in 2024 and $ million in the aggregate for the years 2025 through 2041.

Leases

Leases	6 Months Ended
	Jun. 30, 2021
Leases [Abstract]
Leases	Note 8. Leases We have operating and finance leases for our manufacturing facilities, warehouses, office space, automobiles, and certain equipment. Our leases have remaining lease terms of up to ten years, some of which may include one or more five-year renewal options. We have included the five-year renewal option for one of our leases in our operating lease payments as we concluded that it is reasonably certain that we will exercise the option. Leases with an initial term of twelve months or less are not recorded on the balance sheet. Operating lease expense is recognized on a straight-line basis over the lease term. Finance leases are not material. The following tables provides quantitative disclosures related to our operating leases and includes all operating leases acquired in the Trombetta acquisition from the date of acquisition : Balance Sheet Information June 30, 2021 December 31, 2020 Assets Operating lease right-of-use assets $ 39,095 $ 29,958 Liabilities Sundry payables and accrued expenses $ 9,851 $ 8,719 Noncurrent operating lease liabilities 30,495 22,450 Total operating lease liabilities $ 40,346 $ 31,169 Weighted Average Remaining Lease Term Operating leases 5.2 Years 5 Years Weighted Average Discount Rate Operating leases 3.2 % 3.6 % Three Months Ended June 30, Expense and Cash Flow Information 2021 2020 Lease Expense Operating lease expense (a) $ 2,441 $ 2,303 Six Months Ended June 30 2021 2020 Lease Expense Operating lease expense (a) $ 4,777 $ 4,616 Supplemental Cash Flow Information Cash paid for the amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4,733 $ 4,544 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 14,077 $ 380 (a) Excludes expenses of approximately $ million and $ million for the three and six months ended June 30, 2021, respectively, and approximately $ million and $ million for the comparable periods in 2020, respectively, Minimum Lease Payments At June 30, 2021, we are obligated to make minimum lease payments through 2028, under operating leases, which are as follows (in thousands): 2021 $ 5,110 2022 9,681 2023 8,700 2024 6,370 2025 5,248 Thereafter 8,835 Total lease payments $ 43,944 Less: Interest (3,598 ) Present value of lease liabilities $ 40,346

Credit Facilities and Long-Term

Credit Facilities and Long-Term Debt	6 Months Ended
	Jun. 30, 2021
Credit Facilities and Long-Term Debt [Abstract]
Credit Facilities and Long-Term Debt	Note 9. Credit Facilities and Long-Term Debt Total debt outstanding is summarized as follows: June 30, 2021 December 31, 2020 (In thousands) Revolving credit facilities $ 135,000 $ 10,000 Other (1) 2,477 232 Total debt $ 137,477 $ 10,232 Current maturities of debt $ 137,397 $ 10,135 Long-term debt 80 97 Total debt $ 137,477 $ 10,232 (1) Other includes borrowings under our Polish overdraft facility of Zloty million (approximately $ million) and Zloty million (approximately $ million) as . Revolving Credit Facility In December 2018, we amended our Credit Agreement with JPMorgan Chase Bank, N.A., as agent, and a syndicate of lenders. The amended credit agreement provides for a senior secured revolving credit facility with a line of credit of up to $250 million (with an additional $50 million accordion feature) and extends the maturity date to December 2023 Borrowings under the amended credit agreement are secured by substantially all of our assets, including accounts receivable, inventory and certain fixed assets, and those of certain of our subsidiaries. Availability under the amended credit agreement is based on a formula of eligible accounts receivable, eligible drafts presented to the banks under our supply chain financing arrangements and eligible inventory. After taking into account outstanding borrowings under the amended credit agreement, there was an additional $ million available for us to borrow pursuant to the formula at . Outstanding borrowings under the credit agreement, which are classified as current liabilities, were $135 million and $10 million at June 30, 2021 and December 31, 2020, respectively; while letters of credit outstanding under the credit agreement were $ million and $ million at June 30, 2021 and December 31, 2020, At June 30, 2021, the weighted average interest rate on our amended credit agreement was 1.3%, which consisted of $135 million in direct borrowings. At December 31, 2020, the weighted average interest rate on our amended credit agreement was 1.4% , which consisted of $ million in direct borrowings. $ million, compared to a balance of $ million for the ended and a balance of $ million for the year ended December 31, 2020. At any time that our borrowing availability is less than the greater of either (a) $25 million, or 10% of the commitments if fixed assets are not included in the borrowing base, or (b) $31.25 million, or 12.5% of the commitments if fixed assets are included in the borrowing base, the terms of the amended credit agreement provide for, among other provisions, a financial covenant requiring us, on a consolidated basis, to maintain a fixed charge coverage ratio of 1:1 at the end of each fiscal quarter (rolling four quarters). As of June 30, 2021, we were not subject to these covenants. The amended credit agreement permits us to pay cash dividends of $20 million and make stock repurchases of $20 million in any fiscal year subject to a minimum availability of $25 million. Provided specific conditions are met, the amended credit agreement also permits acquisitions, permissible debt financing, capital expenditures, and cash dividend payments and stock repurchases of greater than $20 million. Polish Overdraft Facility Our Polish subsidiary, SMP Poland sp. z.o.o., has entered into an overdraft facility with HSBC France (Spolka Akcyjna) Oddzial w Polsce, formerly HSBC Bank Polska S.A., for Zloty 30 million (approximately $7.9 million). The facility, as amended, expires in December 2021 Deferred Financing Costs We have deferred financing costs of $ million and $ million as of . Deferred financing costs are related to our revolving credit facility. Deferred financing costs as of June 30, 2021 are being amortized in the amounts of $ million for the remainder of 2021, $ million in 2022, and $ million in 2023.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	6 Months Ended
	Jun. 30, 2021
Stock-Based Compensation Plans [Abstract]
Stock-Based Compensation Plans	Note 10. Stock-Based Compensation Plans We account for our stock-based compensation plans in accordance with the provisions of FASB ASC 718, Stock Compensation Restricted and Performance Stock Grants In , our Board of Directors and Shareholders approved an amendment and restatement to the Omnibus Incentive Plan (the “Plan”). The Plan, as amended and restated ( ) increased the number of shares available for issuance under the Plan by shares (from shares to shares); ( ) increased the number of shares available for issuance to nonemployee directors by (from shares to shares); and ( ) revised the Plan in response to certain changes made in applicable federal tax laws. The restated and amended Omnibus Incentive Plan terminates in . Under the revised and amended Omnibus Incentive Plan, we are authorized to issue, among other things, shares of restricted and performance-based stock to eligible employees and restricted stock to directors of up to shares. Shares issued under the Plan that are cancelled, forfeited or expire by their terms are eligible to be granted again under the Plan. As part of the Plan, we currently grant shares of restricted stock to eligible employees and our independent directors and performance-based shares to eligible employees. We grant eligible employees types of restricted stock (standard restricted shares and long-term retention restricted shares). Standard restricted shares granted to employees become fully vested no earlier than after the date of grant. Long-term retention restricted shares granted to selected executives vest at a rate on or within approximately of an executive reaching the ages 60 and 63 and become fully vested on or within approximately of an executive reaching the age 65 Restricted shares granted to directors become fully vested upon the first anniversary of the date of grant. Performance-based shares issued to eligible employees are subject to a three-year measuring period and the achievement of performance targets and, depending upon the achievement of such performance targets, they may become vested no earlier than three years after the date of grant. Each period we evaluate the probability of achieving the applicable targets, and we adjust our accrual accordingly. Restricted shares (other than long-term retention restricted shares) and performance shares issued to certain key executives and directors are subject to a one Our : Shares Weighted Average Grant Date Fair Value Per Share Balance at December 31, 2020 839,686 $ 34.77 Granted 7,000 39.03 Vested (56,845 ) 31.90 Forfeited (10,625 ) 38.76 Balance at June 30, 2021 779,216 $ 34.96 We recorded compensation expense related to restricted shares and performance-based shares of $ million ($ million, net of tax) and $ million ($ million, net of tax) for the six . The unamortized compensation expense related to our restricted and performance-based shares was $ million at June 30, 2021, and is expected to be recognized as they vest over a weighted average period of years and years for employees and directors, respectively.

Employee Benefits

Employee Benefits	6 Months Ended
	Jun. 30, 2021
Employee Benefits [Abstract]
Employee Benefits	Note 11. Employee Benefits We provide certain medical and dental care benefits to former U.S. union employees. The postretirement medical and dental benefit obligation to the former union employees as of June 30, 2021 and the related net periodic benefit cost for the plan for the three and six months ended June 30, 2021 and 2020 were not material. We maintain a defined contribution Supplemental Executive Retirement Plan for key employees. Under the plan, these employees may elect to defer a portion of their compensation and, in addition, we may at our discretion make contributions to the plan on behalf of the employees. In March 2021, we made company contributions to the plan of $0.5 million related to calendar year 2020. We also have an Employee Stock Ownership Plan and Trust for employees who are not covered by a collective bargaining agreement. In connection therewith, we maintain an employee benefits trust to which we contribute shares of treasury stock. We are authorized to instruct the trustees to distribute such shares toward the satisfaction of our future obligations under the plan. The shares held in trust are not considered outstanding for purposes of calculating earnings per share until they are committed to be released. The trustees will vote the shares in accordance with their fiduciary duties. During the six months ended June 30, 2021 we contributed to the trust an additional shares from our treasury and released shares from the trust leaving shares remaining in the trust as of June 30, 2021.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Note 12. Earnings Per Share The following are reconciliations of the net earnings attributable to SMP and the shares used in calculating basic and dilutive net earnings per common share attributable to SMP (in s, except per share data): Three Months Ended June 30, Six June 30, 2021 2020 2021 2020 N et Earnings Attributable to SMP Earnings from continuing operations $ 27,995 $ 11,842 $ 50,159 $ 21,463 Loss from discontinued operations (853 ) (875 ) (2,017 ) (1,869 ) Net earnings attributable to SMP $ 27,142 $ 10,967 $ 48,142 $ 19,594 Basic Net Earnings Per Common Share Attributable to SMP Earnings from continuing operations per common share $ 1.26 $ 0.53 $ 2.25 $ 0.96 Loss from discontinued operations per common share (0.04 ) (0.04 ) (0.09 ) (0.08 ) Net earnings per common share attributable to SMP $ 1.22 $ 0.49 $ 2.16 $ 0.88 Weighted average common shares outstanding 22,199 22,330 22,258 22,384 Diluted Net Earnings Per Common Share Attributable to SMP Earnings from continuing operations per common share $ 1.23 $ 0.52 $ 2.21 $ 0.94 Loss from discontinued operations per common share (0.03 ) (0.04 ) (0.09 ) (0.08 ) Net earnings per common share attributable to SMP $ 1.20 $ 0.48 $ 2.12 $ 0.86 Weighted average common shares outstanding 22,199 22,330 22,258 22,384 Plus incremental shares from assumed conversions: Dilutive effect of restricted stock and performance-based stock 487 389 483 410 Weighted average common shares outstanding – Diluted 22,686 22,719 22,741 22,794 The shares listed below were not included in the computation of diluted net earnings per common share attributable to SMP because to do so would have been anti-dilutive for the periods presented or because they were excluded under the treasury method (in s): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Restricted and performance-based shares 239 261 258 257

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2021
Fair Value Measurements [Abstract]
Fair Value Measurements	Note 13. Fair Value Measurements The carrying value of our financial instruments consisting of cash and cash equivalents, deferred compensation, and short term borrowings approximate their fair value. In each instance, fair value is determined after considering Level 1 inputs under the three-level fair value hierarchy. For fair value purposes, the carrying value of cash and cash equivalents approximates fair value due to the short maturity of those investments. The fair value of the assets held by the deferred compensation plan are based on the quoted market prices of the underlying funds which are held in registered investment companies. The carrying value of our revolving credit facilities, classified as short term borrowings, equals fair market value because the interest rate reflects current market rates.

Industry Segments

Industry Segments	6 Months Ended
	Jun. 30, 2021
Industry Segments [Abstract]
Industry Segments	Note 14. Industry Segments We have two major reportable operating segments, each of which focuses on a specific line of automotive parts in the automotive aftermarket with a complementary focus on the heavy duty, industrial equipment and original equipment service markets. Our Engine Management Segment manufactures and remanufactures ignition and emission parts, ignition wires, battery cables, fuel system parts and sensors for vehicle systems. Our Temperature Control Segment manufactures and remanufactures air conditioning compressors, air conditioning and heating parts, engine cooling system parts, power window accessories and windshield washer system parts The following tables show our net sales, intersegment revenue and operating income for each reportable segment (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Net Sales (a) Engine Management $ 233,216 $ 173,153 $ 445,234 $ 374,271 Temperature Control 106,471 72,392 168,944 123,834 All Other 2,389 2,394 4,451 4,136 Consolidated $ 342,076 $ 247,939 $ 618,629 $ 502,241 Intersegment Revenue (a) Engine Management $ 5,185 $ 2,666 $ 10,544 $ 6,680 Temperature Control 3,125 1,387 4,972 2,778 All Other (8,310 ) (4,053 ) (15,516 ) (9,458 ) Consolidated $ — $ — $ — $ — Operating Income Engine Management $ 30,384 $ 16,722 $ 61,498 $ 38,155 Temperature Control 13,229 3,967 16,821 3,619 All Other (6,688 ) (4,668 ) (12,070 ) (11,430 ) Consolidated $ 36,925 $ 16,021 $ 66,249 $ 30,344 (a) Segment net sales include intersegment sales in our Engine Management and Temperature Control segments. For the disaggregation of our net sales from contracts with customers by geographic area, major product group and major sales channels for each of our segments, see Note 15, “Net Sales.”

Net Sales

Net Sales	6 Months Ended
	Jun. 30, 2021
Net Sales [Abstract]
Net Sales	Note 15. Net Sales Disaggregation of Net Sales We disaggregate our net sales from contracts with customers by geographic area, major product group, and major sales channels for each of our segments, as we believe it best depicts how the nature, amount, timing and uncertainty of our net sales are affected by economic factors. The following tables provide disaggregation of net sales information for the months and months ended and (in thousands Three months ended June 30, 2021 Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 202,274 $ 101,241 $ — $ 303,515 Canada 7,433 4,632 2,389 14,454 Asia 9,447 68 — 9,515 Mexico 6,460 115 — 6,575 Europe 5,252 161 — 5,413 Other foreign 2,350 254 — 2,604 Total $ 233,216 $ 106,471 $ 2,389 $ 342,076 Major Product Group: Ignition, emission control, fuel and safety related system products $ 192,486 $ — $ 1,832 $ 194,318 Wire and cable 40,730 — (142 ) 40,588 Compressors — 69,577 386 69,963 Other climate control parts — 36,894 313 37,207 Total $ 233,216 $ 106,471 $ 2,389 $ 342,076 Major Sales Channel: Aftermarket $ 175,159 $ 97,763 $ 2,389 $ 275,311 OE/OES 51,293 8,104 — 59,397 Export 6,764 604 — 7,368 Total $ 233,216 $ 106,471 $ 2,389 $ 342,076 Three months ended June 30, 2020 Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 153,891 $ 69,770 $ — $ 223,661 Canada 4,525 2,257 2,394 9,176 Asia 8,216 44 — 8,260 Mexico 3,409 41 — 3,450 Europe 2,526 75 — 2,601 Other foreign 586 205 — 791 Total $ 173,153 $ 72,392 $ 2,394 $ 247,939 Major Product Group: Ignition, emission control, fuel and safety related system products $ 142,787 $ — $ 1,841 $ 144,628 Wire and cable 30,366 — 14 30,380 Compressors — 44,878 493 45,371 Other climate control parts — 27,514 46 27,560 Total $ 173,153 $ 72,392 $ 2,394 $ 247,939 Major Sales Channel: Aftermarket $ 141,476 $ 66,437 $ 2,394 $ 210,307 OE/OES 28,351 5,696 — 34,047 Export 3,326 259 — 3,585 Total $ 173,153 $ 72,392 $ 2,394 $ 247,939 Six months ended June 30, 2021 (a) Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 383,375 $ 159,977 $ — $ 543,352 Canada 16,007 7,958 4,451 28,416 Asia 19,082 144 — 19,226 Mexico 12,607 180 — 12,787 Europe 10,401 217 — 10,618 Other foreign 3,762 468 — 4,230 Total $ 445,234 $ 168,944 $ 4,451 $ 618,629 Major Product Group: Ignition, emission control, fuel and safety related system products $ 366,152 $ — $ 3,501 $ 369,653 Wire and cable 79,082 — (135 ) 78,947 Compressors — 102,951 404 103,355 Other climate control parts — 65,993 681 66,674 Total $ 445,234 $ 168,944 $ 4,451 $ 618,629 Major Sales Channel: Aftermarket $ 342,002 $ 153,448 $ 4,451 $ 499,901 OE/OES 90,128 14,484 — 104,612 Export 13,104 1,012 — 14,116 Total $ 445,234 $ 168,944 $ 4,451 $ 618,629 Six June 30, 2020 (a) Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 328,270 $ 117,646 $ — $ 445,916 Canada 11,114 5,398 4,136 20,648 Asia 17,675 139 — 17,814 Mexico 9,523 100 — 9,623 Europe 5,874 198 — 6,072 Other foreign 1,815 353 — 2,168 Total $ 374,271 $ 123,834 $ 4,136 $ 502,241 Major Product Group: Ignition, emission control, fuel and safety related system products $ 307,313 $ — $ 3,325 $ 310,638 Wire and cable 66,958 — (8 ) 66,950 Compressors — 70,226 351 70,577 Other climate control parts — 53,608 468 54,076 Total $ 374,271 $ 123,834 $ 4,136 $ 502,241 Major Sales Channel: Aftermarket $ 302,059 $ 110,831 $ 4,136 $ 417,026 OE/OES 63,471 12,475 — 75,946 Export 8,741 528 — 9,269 Total $ 374,271 $ 123,834 $ 4,136 $ 502,241 (a) Segment net sales include intersegment sales in our Engine Management and Temperature Control segments. (b) Other consists of the elimination of intersegment sales from our Engine Management and Temperature Control segments as well as sales from our Canadian business unit that does not meet the criteria of a reportable operating segment. Intersegment wire and cable sales for the three months ended June 30, 2021 , and for the six months ended June 30, 2021 and June 30, 2020 exceeded third party sales from our Canadian business unit Geographic Area We sell our line of products primarily in the United States, with additional sales in Canada, Mexico, Europe, Asia and Latin America. Sales are attributed to countries based upon the location of the customer. Our sales are substantially denominated in U.S. dollars. Major Product Group The Engine Management segment of the Company principally generates revenue from the sale of automotive engine parts in the automotive aftermarket including ignition, emission control, fuel and safety related system products, and wire and cable parts. The Temperature Control segment of the Company principally generates revenue from the sale of automotive temperature control systems parts in the automotive aftermarket including air conditioning compressors and other climate control parts Major Sales Channel In the aftermarket channel, we sell our products to warehouse distributors and retailers. Our customers buy directly from us and sell directly to jobber stores, professional technicians and to “do-it-yourselfers” who perform automotive repairs on their personal vehicles. In the “OE” and Original Equipment Service (“OES”) channel, we sell our products to original equipment manufacturers who redistribute our products within their distribution network, ind ependent dealerships and service dealer technicians. Lastly, in the Export channel, our domestic entities sell to customers outside the United States.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 16. Commitments and Contingencies Asbestos In 1986, we acquired a brake business, which we subsequently sold in March 1998 and which is accounted for as a discontinued operation in the accompanying statement of operations. When we originally acquired this brake business, we assumed future liabilities relating to any alleged exposure to asbestos-containing products manufactured by the seller of the acquired brake business. In accordance with the related purchase agreement, we agreed to assume the liabilities for all new claims filed on or after September 2001. Our ultimate exposure will depend upon the number of claims filed against us on or after September 2001, and the amounts paid for settlements, awards of asbestos-related damages, and defense of such claims. At June 30, 2021, approximately 1,610 cases were outstanding for which we may be responsible for any related liabilities. Since inception in September 2001 through June 30, 2021, the amounts paid for settled claims and awards of asbestos-related damages, including interest, were approximately $53.1 million. We do not have insurance coverage for the indemnity and defense costs associated with the claims we face. In evaluating our potential asbestos-related liability, we have considered various factors including, among other things, an actuarial study of the asbestos related liabilities performed by an independent actuarial firm, our settlement amounts and whether there are any co-defendants, the jurisdiction in which lawsuits are filed, and the status and results of such claims. As is our accounting policy, we consider the advice of actuarial consultants with experience in assessing asbestos-related liabilities to estimate our potential claim liability ; and perform an actuarial evaluation in the third quarter of each year and whenever events or changes in circumstances indicate that additional provisions may be necessary. The methodology used to project asbestos-related liabilities and costs in our actuarial study considered: (1) historical data available from publicly available studies; (2) an analysis of our recent claims history to estimate likely filing rates into the future; (3) an analysis of our currently pending claims; and (4) an analysis of our settlements and awards of asbestos-related damages to date; and (5) an analysis of closed with pay ratios and lag patterns in order to develop average future settlement values. Based on the information contained in the actuarial study and all other available information considered by us, we have concluded that no amount within the range of settlement payments and awards of asbestos-related damages was more likely than any other and, therefore, in assessing our asbestos liability we compare the low end of the range to our recorded liability to determine if an adjustment is required. In accordance with our policy to perform an annual actuarial evaluation in the third quarter of each year, and whenever events or changes in circumstances indicate that additional provisions may be necessary, an actuarial study was performed as of August 31, 2020. The results of the August 31, 2020 study included an estimate of our undiscounted liability for settlement payments and awards of asbestos-related damages, excluding legal costs and any potential recovery from insurance carriers, ranging from $58.1 million to $99.3 million for the period through 2065. Based upon the results of the August 31, 2020 actuarial study, in September 2020 we increased our asbestos liability to $58.1 million, the low end of the range, and recorded an incremental pre-tax provision of $8.7 million in earnings (loss) from discontinued operations. As related to our potential asbestos-related liability as of August 31, 2020, we were found liable for $7.6 million in compensatory damages as a defendant in a 2018 asbestos liability case in California. We actively pursued our right of appeal, and during the fourth quarter of 2020, received notice that the appeal was unsuccessful. The judgment against us was for the $7.6 million in compensatory damages plus interest at a rate of ten percent (10%) per annum. During the fourth quarter of 2020, we paid the compensatory damages and accrued interest. Based upon the reduction to our asbestos-related liability resulting from the payment made in the California asbestos case and fourth quarter 2020 cash settlements, in December 2020 our actuarial firm performed an updated actuarial study. The results of the updated study included an estimate of our undiscounted liability for settlement payments and awards of asbestos-related damages, excluding legal costs and any potential recovery from insurance carriers, ranging from $63 million to $99.1 million for the period through 2065. Based upon the results of the updated actuarial study and in accordance with our practice, we increased our asbestos liability as of November 2020 to $63 million, the low end of the range, and recorded an additional incremental pre-tax provision of $17 million in earnings (loss) from discontinued operations. Future legal costs, which are expensed as incurred and reported in earnings (loss) from discontinued operations, are estimated, according to the updated study, to range from $48.7 million to $95.4 million for the period through 2065. Total operating cash outflows related to discontinued operations, which include settlements, awards of asbestos-related damages and legal costs, net of taxes, were $5.5 million and $3.4 million for the six months ended June 30, 2021 and 2020, respectively. We plan to perform an annual actuarial evaluation during the third quarter of each year for the foreseeable future and whenever events or changes in circumstances indicate that additional provisions may be necessary. Given the uncertainties associated with projecting such matters into the future and other factors outside our control, we can give no assurance that additional provisions will not be required. We will continue to monitor events and changes in circumstances surrounding these potential liabilities in determining whether to perform additional actuarial evaluations and whether additional provisions may be necessary. At the present time, however, we do not believe that any additional provisions would be reasonably likely to have a material adverse effect on our liquidity or consolidated financial position. Other Litigation We are currently involved in various other legal claims and legal proceedings (some of which may involve substantial amounts), including claims related to commercial disputes, product liability, employment, and environmental. Although these legal claims and legal proceedings are subject to inherent uncertainties, based on our understanding and evaluation of the relevant facts and circumstances, we believe that the ultimate outcome of these matters will not, either individually or in the aggregate, have a material adverse effect on our business, financial condition or results of operations. We may at any time determine that settling any of these matters is in our best interests, which settlement may include substantial payments. Although we cannot currently predict the specific amount of any liability that may ultimately arise with respect to any of these matters, we will record provisions when the liability is considered probable and reasonably estimable. Significant judgment is required in both the determination of probability and the determination as to whether an exposure can be reasonably estimated. As additional information becomes available, we reassess our potential liability related to these matters. Such revisions of the potential liabilities could have a material adverse effect on our business, financial condition or results of operations. Warranties We generally warrant our products against certain manufacturing and other defects. These product warranties are provided for specific periods of time of the product depending on the nature of the product. As of June 30, 2021 and 2020, we have accrued $18.2 million and $17.8 million, respectively, for estimated product warranty claims included in accrued customer returns. The accrued product warranty costs are based primarily on historical experience of actual warranty claims. The following table provides the changes in our product warranties (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Balance, beginning of period $ 16,948 $ 17,232 $ 17,663 $ 17,175 Liabilities accrued for current year sales 25,162 22,795 45,339 44,862 Settlements of warranty claims (23,897 ) (22,267 ) (44,789 ) (44,277 ) Balance, end of period $ 18,213 $ 17,760 $ 18,213 $ 17,760

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2021
Basis of Presentation [Abstract]
Principles of Consolidation	Standard Motor Products, Inc. and subsidiaries (referred to hereinafter in these notes to the consolidated financial statements as “we,” “us,” “our,” “SMP,” or the “Company”) is a leading automotive parts manufacturer and distributor for engine management and temperature control systems of motor vehicles in the automotive aftermarket industry with a complementary focus on the heavy duty, industrial equipment and original equipment service markets. The accompanying unaudited financial information should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our Annual Report on Form -K for the year ended December The unaudited consolidated financial statements include our accounts and all domestic and international companies in which we have more than a equity ownership, except in instances where the minority shareholder maintains substantive participating rights, in which case we follow the equity method of accounting. In instances where we have more than a equity ownership and the minority shareholder does not maintain substantive participating rights, our consolidated financial statements include the accounts of the company on a consolidated basis with its net income and equity reported at amounts attributable to both our equity position and that of the noncontrolling interest. Investments in unconsolidated affiliates are accounted for on the equity method, as we do not have a controlling financial interest but have the ability to exercise significant influence. All significant inter-company items have been eliminated. The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form -Q and Rule - of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. The results of operations for the interim periods are not necessarily indicative of the results of operations for the entire year.
Reclassification	Reclassification Certain prior period amounts in the accompanying consolidated financial statements and related notes have been reclassified to conform to the 2021 presentation.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Summary of Significant Accounting Policies [Abstract]
Recently Issued Accounting Pronouncements	Standards that were adopted Standard Description Date of adoption Effects on the financial statements or other significant matters ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes This standard is intended to simplify the accounting for income taxes by removing certain ASC Topic 740 exceptions in performing intra-period tax allocations among income statement components, in calculating certain deferred tax liabilities related to outside basis differences, and in calculating income taxes in interim periods with year-to-date losses. In addition, this standard is also intended to improve consistency and add simplification by clarifying and amending the reporting of franchise taxes and other taxes partially based on income, the recognition of deferred income taxes related to the step-up in tax basis goodwill, and the reporting in interim periods of the recognition of the enactment of tax laws or rate changes. January The adoption of the technical clarifications in the standard did not materially impact our accounting for income taxes, our consolidated financial statements and related disclosures. Standards that are not yet adopted as of June T he following table provides a brief description of recently issued accounting pronouncements that have not yet been adopted as of June 30, 2021, and that could have an impact on our financial statements: Standard Description Date of adoption / Effective date Effects on the financial statements or other significant matters A SU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting T his standard is intended to provide optional guidance for a limited time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The new standard is applicable to contracts that reference LIBOR, or another reference rate, expected to be discontinued due to reference rate reform. E ffective March 12, 2020 through December 31, 2022 The new standard may be applied as of the beginning of an interim period that includes March 12, 2020 through December 31, 2022. As certain of our contracts reference LIBOR, including our revolving credit facility and supply chain financing arrangements, we are currently reviewing the optional guidance in the standard to determine its impact upon the discontinuance of LIBOR. At this time, we do not believe that the new guidance, nor the discontinuance of LIBOR, will have a material impact on our consolidated financial statements and related disclosures.

Business Acquisitions and Inv_2

Business Acquisitions and Investments (Tables)	6 Months Ended
	Jun. 30, 2021
Trumpet Holdings, Inc. [Member]
Business Acquisition [Line Items]
Allocation of Purchase Price, Assets Acquired And Liabilities Assumed	Purchase price $ 111,741 Assets acquired and liabilities assumed: Receivables $ 9,173 Inventory 12,460 Other current assets (1) 5,193 Property, plant and equipment, net 4,939 Operating lease right-of-use assets 3,847 Intangible assets 54,700 Goodwill 49,028 Current liabilities (4,820 ) Noncurrent operating lease liabilities (3,065 ) Deferred income taxes (8,210 ) Subtotal 123,245 Fair value of acquired noncontrolling interest (11,504 ) Net assets acquired $ 111,741 (1) The other current assets balance includes of cash acquired.
Particulate Matter Sensor Business of Stoneridge, Inc. [Member]
Business Acquisition [Line Items]
Allocation of Purchase Price, Assets Acquired And Liabilities Assumed	T he following table presents the allocation of the purchase price to the assets acquired and liabilities assumed through June 30, 2021, based on their fair values (in thousands): Purchase Price $ 2,138 Assets acquired and liabilities assumed: Inventory $ 1,032 Machinery and equipment, net 351 Intangible assets 755 Net assets acquired $ 2,138

Restructuring and Integration_2

Restructuring and Integration Expenses (Tables)	6 Months Ended
	Jun. 30, 2021
Restructuring and Integration Expenses [Abstract]
Restructuring and Integration Expense	The aggregated liabilities included in “sundry payables and accrued expenses” and “other accrued liabilities” in the consolidated balance sheet relating to the restructuring and integration activities as of December 31, 2020 and June 30, 2021 and for the six months ended June 30, 2021, consisted of the following (in thousands): Workforce Reduction Other Exit Costs Total Exit activity liability at December 31, 2020 $ 179 $ — $ 179 Cash payments (72 ) — (72 ) Exit activity liability at June 30, 2021 $ 107 $ — $ 107

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2021
Inventories [Abstract]
Inventories	Inventories, which are stated at the lower of cost (determined by means of the first-in, first-out method) and net realizable value, consist of the following: June 30, 2021 December 31, 2020 (In thousands) Finished goods $ 261,627 $ 225,523 Work in process 12,219 10,711 Raw materials 131,030 109,268 Subtotal 404,876 345,502 Unreturned customer inventories 22,070 19,632 Total inventories $ 426,946 $ 365,134

Acquired Intangible Assets (Tab

Acquired Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Acquired Intangible Assets [Abstract]
Acquired Identifiable Intangible Assets	Acquired identifiable intangible assets consist of the following: June 30, 2021 December 31, 2020 (In thousands) Customer relationships $ 151,876 $ 111,701 Patents, developed technology and intellectual property 14,123 723 Trademarks and trade names 8,880 6,980 Non-compete agreements 3,277 3,272 Supply agreements 800 800 Leaseholds 160 160 Total acquired intangible assets 179,116 123,636 Less accumulated amortization (1) (74,336 ) (70,221 ) Net acquired intangible assets $ 104,780 $ 53,415 (1) Applies to all intangible assets, except for trademarks and trade names totaling $2.6 million, which have indefinite useful lives and, as such, are not being amortized.

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2021
Leases [Abstract]
Quantitative Disclosures Related to Operating Leases	The following tables provides quantitative disclosures related to our operating leases and includes all operating leases acquired in the Trombetta acquisition from the date of acquisition : Balance Sheet Information June 30, 2021 December 31, 2020 Assets Operating lease right-of-use assets $ 39,095 $ 29,958 Liabilities Sundry payables and accrued expenses $ 9,851 $ 8,719 Noncurrent operating lease liabilities 30,495 22,450 Total operating lease liabilities $ 40,346 $ 31,169 Weighted Average Remaining Lease Term Operating leases 5.2 Years 5 Years Weighted Average Discount Rate Operating leases 3.2 % 3.6 % Three Months Ended June 30, Expense and Cash Flow Information 2021 2020 Lease Expense Operating lease expense (a) $ 2,441 $ 2,303 Six Months Ended June 30 2021 2020 Lease Expense Operating lease expense (a) $ 4,777 $ 4,616 Supplemental Cash Flow Information Cash paid for the amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4,733 $ 4,544 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 14,077 $ 380 (a) Excludes expenses of approximately $ million and $ million for the three and six months ended June 30, 2021, respectively, and approximately $ million and $ million for the comparable periods in 2020, respectively,
Minimum Lease Payments	At June 30, 2021, we are obligated to make minimum lease payments through 2028, under operating leases, which are as follows (in thousands): 2021 $ 5,110 2022 9,681 2023 8,700 2024 6,370 2025 5,248 Thereafter 8,835 Total lease payments $ 43,944 Less: Interest (3,598 ) Present value of lease liabilities $ 40,346

Credit Facilities and Long-Te_2

Credit Facilities and Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Credit Facilities and Long-Term Debt [Abstract]
Summary of Total Debt Outstanding	Total debt outstanding is summarized as follows: June 30, 2021 December 31, 2020 (In thousands) Revolving credit facilities $ 135,000 $ 10,000 Other (1) 2,477 232 Total debt $ 137,477 $ 10,232 Current maturities of debt $ 137,397 $ 10,135 Long-term debt 80 97 Total debt $ 137,477 $ 10,232 (1) Other includes borrowings under our Polish overdraft facility of Zloty million (approximately $ million) and Zloty million (approximately $ million) as .

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	6 Months Ended
	Jun. 30, 2021
Stock-Based Compensation Plans [Abstract]
Restricted and Performance-based Share Activity	Our : Shares Weighted Average Grant Date Fair Value Per Share Balance at December 31, 2020 839,686 $ 34.77 Granted 7,000 39.03 Vested (56,845 ) 31.90 Forfeited (10,625 ) 38.76 Balance at June 30, 2021 779,216 $ 34.96

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Reconciliations of Earnings Available to Common Stockholders and Shares used in Calculating Basic and Dilutive Net Earnings per Common Share	The following are reconciliations of the net earnings attributable to SMP and the shares used in calculating basic and dilutive net earnings per common share attributable to SMP (in s, except per share data): Three Months Ended June 30, Six June 30, 2021 2020 2021 2020 N et Earnings Attributable to SMP Earnings from continuing operations $ 27,995 $ 11,842 $ 50,159 $ 21,463 Loss from discontinued operations (853 ) (875 ) (2,017 ) (1,869 ) Net earnings attributable to SMP $ 27,142 $ 10,967 $ 48,142 $ 19,594 Basic Net Earnings Per Common Share Attributable to SMP Earnings from continuing operations per common share $ 1.26 $ 0.53 $ 2.25 $ 0.96 Loss from discontinued operations per common share (0.04 ) (0.04 ) (0.09 ) (0.08 ) Net earnings per common share attributable to SMP $ 1.22 $ 0.49 $ 2.16 $ 0.88 Weighted average common shares outstanding 22,199 22,330 22,258 22,384 Diluted Net Earnings Per Common Share Attributable to SMP Earnings from continuing operations per common share $ 1.23 $ 0.52 $ 2.21 $ 0.94 Loss from discontinued operations per common share (0.03 ) (0.04 ) (0.09 ) (0.08 ) Net earnings per common share attributable to SMP $ 1.20 $ 0.48 $ 2.12 $ 0.86 Weighted average common shares outstanding 22,199 22,330 22,258 22,384 Plus incremental shares from assumed conversions: Dilutive effect of restricted stock and performance-based stock 487 389 483 410 Weighted average common shares outstanding – Diluted 22,686 22,719 22,741 22,794
Anti-dilutive Securities Excluded from Computation of Earnings per Share	The shares listed below were not included in the computation of diluted net earnings per common share attributable to SMP because to do so would have been anti-dilutive for the periods presented or because they were excluded under the treasury method (in s): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Restricted and performance-based shares 239 261 258 257

Industry Segments (Tables)

Industry Segments (Tables)	6 Months Ended
	Jun. 30, 2021
Industry Segments [Abstract]
Sales and Operating Income by Operating Segments	The following tables show our net sales, intersegment revenue and operating income for each reportable segment (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Net Sales (a) Engine Management $ 233,216 $ 173,153 $ 445,234 $ 374,271 Temperature Control 106,471 72,392 168,944 123,834 All Other 2,389 2,394 4,451 4,136 Consolidated $ 342,076 $ 247,939 $ 618,629 $ 502,241 Intersegment Revenue (a) Engine Management $ 5,185 $ 2,666 $ 10,544 $ 6,680 Temperature Control 3,125 1,387 4,972 2,778 All Other (8,310 ) (4,053 ) (15,516 ) (9,458 ) Consolidated $ — $ — $ — $ — Operating Income Engine Management $ 30,384 $ 16,722 $ 61,498 $ 38,155 Temperature Control 13,229 3,967 16,821 3,619 All Other (6,688 ) (4,668 ) (12,070 ) (11,430 ) Consolidated $ 36,925 $ 16,021 $ 66,249 $ 30,344 (a) Segment net sales include intersegment sales in our Engine Management and Temperature Control segments.

Net Sales (Tables)

Net Sales (Tables)	6 Months Ended
	Jun. 30, 2021
Net Sales [Abstract]
Disaggregation of Net Sales	The following tables provide disaggregation of net sales information for the months and months ended and (in thousands Three months ended June 30, 2021 Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 202,274 $ 101,241 $ — $ 303,515 Canada 7,433 4,632 2,389 14,454 Asia 9,447 68 — 9,515 Mexico 6,460 115 — 6,575 Europe 5,252 161 — 5,413 Other foreign 2,350 254 — 2,604 Total $ 233,216 $ 106,471 $ 2,389 $ 342,076 Major Product Group: Ignition, emission control, fuel and safety related system products $ 192,486 $ — $ 1,832 $ 194,318 Wire and cable 40,730 — (142 ) 40,588 Compressors — 69,577 386 69,963 Other climate control parts — 36,894 313 37,207 Total $ 233,216 $ 106,471 $ 2,389 $ 342,076 Major Sales Channel: Aftermarket $ 175,159 $ 97,763 $ 2,389 $ 275,311 OE/OES 51,293 8,104 — 59,397 Export 6,764 604 — 7,368 Total $ 233,216 $ 106,471 $ 2,389 $ 342,076 Three months ended June 30, 2020 Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 153,891 $ 69,770 $ — $ 223,661 Canada 4,525 2,257 2,394 9,176 Asia 8,216 44 — 8,260 Mexico 3,409 41 — 3,450 Europe 2,526 75 — 2,601 Other foreign 586 205 — 791 Total $ 173,153 $ 72,392 $ 2,394 $ 247,939 Major Product Group: Ignition, emission control, fuel and safety related system products $ 142,787 $ — $ 1,841 $ 144,628 Wire and cable 30,366 — 14 30,380 Compressors — 44,878 493 45,371 Other climate control parts — 27,514 46 27,560 Total $ 173,153 $ 72,392 $ 2,394 $ 247,939 Major Sales Channel: Aftermarket $ 141,476 $ 66,437 $ 2,394 $ 210,307 OE/OES 28,351 5,696 — 34,047 Export 3,326 259 — 3,585 Total $ 173,153 $ 72,392 $ 2,394 $ 247,939 Six months ended June 30, 2021 (a) Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 383,375 $ 159,977 $ — $ 543,352 Canada 16,007 7,958 4,451 28,416 Asia 19,082 144 — 19,226 Mexico 12,607 180 — 12,787 Europe 10,401 217 — 10,618 Other foreign 3,762 468 — 4,230 Total $ 445,234 $ 168,944 $ 4,451 $ 618,629 Major Product Group: Ignition, emission control, fuel and safety related system products $ 366,152 $ — $ 3,501 $ 369,653 Wire and cable 79,082 — (135 ) 78,947 Compressors — 102,951 404 103,355 Other climate control parts — 65,993 681 66,674 Total $ 445,234 $ 168,944 $ 4,451 $ 618,629 Major Sales Channel: Aftermarket $ 342,002 $ 153,448 $ 4,451 $ 499,901 OE/OES 90,128 14,484 — 104,612 Export 13,104 1,012 — 14,116 Total $ 445,234 $ 168,944 $ 4,451 $ 618,629 Six June 30, 2020 (a) Engine Management Temperature Control Other (b) Total Geographic Area: United States $ 328,270 $ 117,646 $ — $ 445,916 Canada 11,114 5,398 4,136 20,648 Asia 17,675 139 — 17,814 Mexico 9,523 100 — 9,623 Europe 5,874 198 — 6,072 Other foreign 1,815 353 — 2,168 Total $ 374,271 $ 123,834 $ 4,136 $ 502,241 Major Product Group: Ignition, emission control, fuel and safety related system products $ 307,313 $ — $ 3,325 $ 310,638 Wire and cable 66,958 — (8 ) 66,950 Compressors — 70,226 351 70,577 Other climate control parts — 53,608 468 54,076 Total $ 374,271 $ 123,834 $ 4,136 $ 502,241 Major Sales Channel: Aftermarket $ 302,059 $ 110,831 $ 4,136 $ 417,026 OE/OES 63,471 12,475 — 75,946 Export 8,741 528 — 9,269 Total $ 374,271 $ 123,834 $ 4,136 $ 502,241 (a) Segment net sales include intersegment sales in our Engine Management and Temperature Control segments. (b) Other consists of the elimination of intersegment sales from our Engine Management and Temperature Control segments as well as sales from our Canadian business unit that does not meet the criteria of a reportable operating segment. Intersegment wire and cable sales for the three months ended June 30, 2021 , and for the six months ended June 30, 2021 and June 30, 2020 exceeded third party sales from our Canadian business unit

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies [Abstract]
Changes in Product Warranties	The following table provides the changes in our product warranties (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Balance, beginning of period $ 16,948 $ 17,232 $ 17,663 $ 17,175 Liabilities accrued for current year sales 25,162 22,795 45,339 44,862 Settlements of warranty claims (23,897 ) (22,267 ) (44,789 ) (44,277 ) Balance, end of period $ 18,213 $ 17,760 $ 18,213 $ 17,760

Basis of Presentation (Details)

Basis of Presentation (Details)	Jun. 30, 2021
Basis of Presentation [Abstract]
Equity ownership in entities included in consolidated financial statements, minimum	50.00%

Business Acquisitions and Inv_3

Business Acquisitions and Investments, Acquisition of Capital Stock of Trumpet Holdings, Inc. (Details) - USD ($) $ in Thousands		1 Months Ended		6 Months Ended
		May 31, 2021	Mar. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Assets acquired and liabilities assumed [Abstract]
Goodwill				$ 126,893	$ 77,837
Trombetta [Member]
Business Combination, Description [Abstract]
Percentage of entity acquired		100.00%
Allocation of the Purchase Price, Assets Acquired and Liabilities Assumed [Abstract]
Purchase Price		$ 111,741
Assets acquired and liabilities assumed [Abstract]
Receivables		9,173
Inventory		12,460
Other current assets	[1]	5,193
Property, plant, and equipment, net		4,939
Operating lease right-of-use assets		3,847
Intangible assets		54,700
Goodwill		49,028
Current liabilities		(4,820)
Noncurrent operating lease liabilities		(3,065)
Deferred income taxes		(8,210)
Subtotal		123,245
Fair value of acquired noncontrolling interest		(11,504)
Net assets acquired		111,741
Cash acquired		4,600
Revenues from acquisition date				$ 5,700
Trombetta [Member] | Customer Relationships [Member]
Assets acquired and liabilities assumed [Abstract]
Intangible assets		39,400
Estimated useful life of intangible assets				20 years
Trombetta [Member] | Developed Technology [Member]
Assets acquired and liabilities assumed [Abstract]
Intangible assets		13,400
Estimated useful life of intangible assets				15 years
Trombetta [Member] | Trade Names [Member]
Assets acquired and liabilities assumed [Abstract]
Intangible assets		$ 1,900
Estimated useful life of intangible assets				10 years
Trombetta [Member] | Trombetta Asia, Ltd [Member]
Business Combination, Description [Abstract]
Percentage of entity acquired		70.00%
Particulate Matter Sensor Business of Stoneridge, Inc. [Member]
Allocation of the Purchase Price, Assets Acquired and Liabilities Assumed [Abstract]
Purchase Price			$ 2,138
Assets acquired and liabilities assumed [Abstract]
Inventory			1,032
Property, plant, and equipment, net			351
Intangible assets			755
Revenues from acquisition date				$ 3,800
Particulate Matter Sensor Business of Stoneridge, Inc. [Member] | Customer Relationships [Member]
Assets acquired and liabilities assumed [Abstract]
Intangible assets			$ 800
Estimated useful life of intangible assets				10 years
Tallinn, Estonia Facility [Member] | Plan [Member]
Allocation of the Purchase Price, Assets Acquired and Liabilities Assumed [Abstract]
Purchase Price				$ 800
[1]	The other current assets balance includes $4.6 million of cash acquired.

Business Acquisitions and Inv_4

Business Acquisitions and Investments, Acquisition of Particulate Matter Sensor Business of Stoneridge, Inc. (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Mar. 31, 2021	Jun. 30, 2021
Particulate Matter Sensor Business of Stoneridge, Inc. [Member]
Allocation of the Purchase Price, Assets Acquired and Liabilities Assumed [Abstract]
Purchase Price	$ 2,138
Assets acquired and liabilities assumed [Abstract]
Inventory	1,032
Machinery and equipment, net	351
Intangible assets	755
Net assets acquired	2,138
Business Combination, Description [Abstract]
Revenues from acquisition date		$ 3,800
Particulate Matter Sensor Business of Stoneridge, Inc. [Member] | Customer Relationships [Member]
Assets acquired and liabilities assumed [Abstract]
Intangible assets	$ 800
Business Combination, Description [Abstract]
Estimated useful life of intangible assets		10 years
Tallinn, Estonia Facility [Member] | Plan [Member]
Allocation of the Purchase Price, Assets Acquired and Liabilities Assumed [Abstract]
Purchase Price		$ 800

Restructuring and Integration_3

Restructuring and Integration Expenses (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Restructuring and integration activities [Roll Forward]
Exit activity liability, beginning of period	$ 179
Cash payments	(72)
Exit activity liability, end of period	107
Plant Rationalization Program [Member]
Restructuring and integration activities [Roll Forward]
Cash payments	(72)
Exit activity liability, end of period	107
Workforce Reduction [Member]
Restructuring and integration activities [Roll Forward]
Exit activity liability, beginning of period	179
Cash payments	(72)
Exit activity liability, end of period	107
Other Exit Costs [Member]
Restructuring and integration activities [Roll Forward]
Exit activity liability, beginning of period	0
Cash payments	0
Exit activity liability, end of period	$ 0

Sale of Receivables (Details)

Sale of Receivables (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Sale of Receivables [Abstract]
Sale of receivables to financial institutions	$ 203.1	$ 147.7	$ 394.4	$ 297.9
Receivables not yet sold	5		5		$ 50
Charge related to sale of receivables	$ 3	$ 3.1	$ 5.7	$ 5.9

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventories [Abstract]
Finished goods	$ 261,627	$ 225,523
Work in process	12,219	10,711
Raw materials	131,030	109,268
Subtotal	404,876	345,502
Unreturned customer inventories	22,070	19,632
Total inventories	$ 426,946	$ 365,134

Acquired Intangible Assets, Ide

Acquired Intangible Assets, Identifiable Intangible Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		$ 179,116	$ 123,636
Less accumulated amortization	[1]	(74,336)	(70,221)
Net acquired intangible assets		104,780	53,415
Customer Relationships [Member]
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		151,876	111,701
Patents, Developed Technology and Intellectual Property [Member]
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		14,123	723
Trademarks and Trade Names [Member]
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		8,880	6,980
Acquired indefinite-lived intangible assets		2,600
Non-compete Agreements [Member]
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		3,277	3,272
Supply Agreements [Member]
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		800	800
Leaseholds [Member]
Indefinite Lived Intangible Assets [Abstract]
Total acquired intangible assets		$ 160	$ 160
[1]	Applies to all intangible assets, except for trademarks and trade names totaling $2.6 million, which have indefinite useful lives and, as such, are not being amortized.

Acquired Intangible Assets, Acq

Acquired Intangible Assets, Acquired Assets and Liabilities and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	May 31, 2021	Mar. 31, 2021
Amortization of acquired intangible assets [Abstract]
Amortization expense	$ 2,100	$ 2,000	$ 4,100	$ 4,100
Estimated amortization expense, remainder of 2021	4,600		4,600
Estimated amortization expense in year 2022	8,400		8,400
Estimated amortization expense in year 2023	8,100		8,100
Estimated amortization expense in year 2024	8,000		8,000
Estimated amortization expense in years 2025 through 2041	$ 73,100		$ 73,100
Particulate Matter Sensor Business of Stoneridge, Inc. [Member]
Intangible assets acquired [Abstract]
Intangible assets						$ 755
Trombetta [Member]
Intangible assets acquired [Abstract]
Business acquisition, ownership percentage					100.00%
Intangible assets					$ 54,700
Customer Relationships [Member] | Particulate Matter Sensor Business of Stoneridge, Inc. [Member]
Intangible assets acquired [Abstract]
Intangible assets						$ 800
Estimated useful life of intangible assets			10 years
Customer Relationships [Member] | Trombetta [Member]
Intangible assets acquired [Abstract]
Intangible assets					39,400
Estimated useful life of intangible assets			20 years
Developed Technology [Member] | Trombetta [Member]
Intangible assets acquired [Abstract]
Intangible assets					13,400
Estimated useful life of intangible assets			15 years
Trade Names [Member] | Trombetta [Member]
Intangible assets acquired [Abstract]
Intangible assets					$ 1,900
Estimated useful life of intangible assets			10 years

Leases (Details)

Leases (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Quantitative Lease Disclosures [Abstract]
Renewal option period		5 years		5 years
Assets [Abstract]
Operating lease right-of-use assets		$ 39,095		$ 39,095		$ 29,958
Liabilities [Abstract]
Sundry payables and accrued expenses		9,851		9,851		8,719
Noncurrent operating lease liabilities		30,495		30,495		22,450
Total operating lease liabilities		$ 40,346		$ 40,346		$ 31,169
Operating Leases [Abstract]
Weighted average remaining lease term		5 years 2 months 12 days		5 years 2 months 12 days		5 years
Weighted average discount rate		3.20%		3.20%		3.60%
Lease Expense [Abstract]
Operating lease expense	[1]	$ 2,441	$ 2,303	$ 4,777	$ 4,616
Excluded expenses of non lease		300	$ 500	900	900
Cash Paid for the amounts included in the measurement of lease liabilities [Abstract]
Operating cash flows from operating leases				4,733	4,544
Right-of-use assets obtained in exchange for new lease obligations [Abstract]
Operating leases				14,077	$ 380
Minimum Lease Payments [Abstract]
2021		5,110		5,110
2022		9,681		9,681
2023		8,700		8,700
2024		6,370		6,370
2025		5,248		5,248
Thereafter		8,835		8,835
Total lease payments		43,944		43,944
Less: Interest		(3,598)		(3,598)
Total operating lease liabilities		$ 40,346		$ 40,346		$ 31,169
Maximum [Member]
Quantitative Lease Disclosures [Abstract]
Remaining operating lease terms		10 years		10 years
[1]	Excludes expenses of approximately $0.3 million and $0.9 million for the three and six months ended June 30, 2021, respectively, and approximately $0.5 million and $0.9 million for the comparable periods in 2020, respectively, related to non-lease components such as maintenance, property taxes, etc., and operating lease expense for leases with an initial term of 12 months or less, which is not material.

Credit Facilities and Long-Te_3

Credit Facilities and Long-Term Debt, Total Debt Outstanding (Details) $ in Thousands, zł in Millions		Jun. 30, 2021USD ($)	Jun. 30, 2021PLN (zł)	Dec. 31, 2020USD ($)	Dec. 31, 2020PLN (zł)
Credit Facilities and Long-Term Debt [Abstract]
Revolving credit facilities		$ 135,000		$ 10,000
Other	[1]	2,477		232
Total debt		137,477		10,232
Current maturities of debt		137,397		10,135
Long-term debt		80		97
HSBC Bank Polska S.A. [Member]
Line of Credit Facility [Abstract]
Overdraft facility		$ 2,400	zł 9	$ 100	zł 0.4
[1]	Other includes borrowings under our Polish overdraft facility of Zloty 9 million (approximately $2.4 million) and Zloty 0.4 million (approximately $0.1 million) as of June 30, 2021 and December 31, 2020, respectively.

Credit Facilities and Long-Te_4

Credit Facilities and Long-Term Debt, Revolving Credit Facility (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Line of Credit Facility [Abstract]
Outstanding borrowings under credit facility	$ 135,000		$ 10,000
Revolving Credit Facility [Member]
Line of Credit Facility [Abstract]
Coverage ratio	1
Revolving Credit Facility [Member] | Pay Cash Dividend [Member]
Line of Credit Facility [Abstract]
Agreement permissions	$ 20,000
Revolving Credit Facility [Member] | Stock Repurchase [Member]
Line of Credit Facility [Abstract]
Agreement permissions	20,000
Revolving Credit Facility [Member] | Stock Repurchase [Member] | Minimum [Member]
Line of Credit Facility [Abstract]
Borrowing base	25,000
Revolving Credit Facility [Member] | Cash Dividend And Stock Repurchases [Member] | Minimum [Member]
Line of Credit Facility [Abstract]
Agreement permissions	20,000
Revolving Credit Facility [Member] | Fixed Assets Included in Borrowing Base [Member]
Line of Credit Facility [Abstract]
Borrowing base	$ 31,250
Borrowing base percentage	12.50%
Revolving Credit Facility [Member] | Fixed Assets Not Included in Borrowing Base [Member] | Maximum [Member]
Line of Credit Facility [Abstract]
Borrowing base	$ 25,000
Borrowing base percentage	10.00%
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Abstract]
Maximum borrowing capacity	$ 250,000
Line of credit facility, accordian feature	$ 50,000
Maturity date	Dec. 31, 2023
Additional available borrowing capacity	$ 112,300
Outstanding borrowings under credit facility	135,000		10,000
Outstanding letters of credit	$ 2,600		$ 2,800
Weighted average interest rate	1.30%		1.40%
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Canada [Member]
Line of Credit Facility [Abstract]
Maximum borrowing capacity	$ 10,000
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Abstract]
Margin on variable rate	1.25%
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Abstract]
Margin on variable rate	1.75%
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Alternate Base Rate [Member]
Line of Credit Facility [Abstract]
Average daily loan balance outstanding	$ 1,000	$ 1,700	$ 1,500
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Alternate Base Rate [Member] | Minimum [Member]
Line of Credit Facility [Abstract]
Margin on variable rate	0.25%
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Alternate Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Abstract]
Margin on variable rate	0.75%

Credit Facilities and Long-Te_5

Credit Facilities and Long-Term Debt, Polish Overdraft Facility (Details) - HSBC Bank Polska S.A. [Member] zł in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2021PLN (zł)	Jun. 30, 2021USD ($)	Dec. 31, 2020PLN (zł)	Dec. 31, 2020USD ($)
Line of Credit Facility [Abstract]
Maximum borrowing capacity	zł 30	$ 7.9
Overdraft facility expiration date	Dec. 31, 2021
Overdraft facility	zł 9	$ 2.4	zł 0.4	$ 0.1
1M WIBOR [Member]
Line of Credit Facility [Abstract]
Basis spread on variable rate	1.50%

Credit Facilities and Long-Te_6

Credit Facilities and Long-Term Debt, Deferred Financing Costs (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Deferred Financing Costs [Abstract]
Deferred financing costs	$ 0.5	$ 0.7
Amortization of financing costs remainder of 2021	0.1
Amortization of financing costs in 2022	0.2
Amortization of financing costs in 2023	$ 0.2

Stock-Based Compensation Plan_2

Stock-Based Compensation Plans (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)Type$ / sharesshares	Jun. 30, 2020USD ($)	May 31, 2021shares
Restricted and Performance Stock Grants [Abstract]
Number of types of restricted stock | Type	2
Additional Disclosures [Abstract]
Compensation expense, gross | $	$ 4,381	$ 3,306
Restricted Shares [Member] | Minimum [Member]
Restricted and Performance Stock Grants [Abstract]
Expiration of vesting period	3 years
Restricted Shares [Member] | Employees [Member]
Restricted and Performance Stock Grants [Abstract]
Estimated forfeitures	5.00%
Restricted Shares [Member] | Executives [Member]
Restricted and Performance Stock Grants [Abstract]
Estimated forfeitures	0.00%
Restricted Shares [Member] | Directors [Member]
Restricted and Performance Stock Grants [Abstract]
Estimated forfeitures	0.00%
Restricted Shares [Member] | Age 60 [Member] | Executives [Member]
Restricted and Performance Stock Grants [Abstract]
Vesting percentage	25.00%
Vesting period before reaching age limit	2 months
Restricted Shares [Member] | Age 63 [Member] | Executives [Member]
Restricted and Performance Stock Grants [Abstract]
Vesting percentage	25.00%
Vesting period before reaching age limit	2 months
Restricted Shares [Member] | Age 65 [Member] | Executives [Member]
Restricted and Performance Stock Grants [Abstract]
Vesting percentage	100.00%
Vesting period before reaching age limit	2 months
Performance-based Shares [Member]
Restricted and Performance Stock Grants [Abstract]
Measuring period for performance-based shares	3 years
Performance-based Shares [Member] | Minimum [Member]
Restricted and Performance Stock Grants [Abstract]
Expiration of vesting period	3 years
Restricted and Performance-Based Shares [Member]
Restricted and performance-based stock, shares [Roll Forward]
Beginning of period (in shares)	839,686
Granted (in shares)	7,000
Vested (in shares)	(56,845)
Forfeited (in shares)	(10,625)
End of period (in shares)	779,216
Restricted and performance-based stock, weighted average grant date fair value per share [Roll Forward]
Beginning of period (in dollars per share) | $ / shares	$ 34.77
Granted (in dollars per share) | $ / shares	39.03
Vested (in dollars per share) | $ / shares	31.90
Forfeited (in dollars per share) | $ / shares	38.76
End of period (in dollars per share) | $ / shares	$ 34.96
Additional Disclosures [Abstract]
Compensation expense, gross | $	$ 4,000	3,000
Compensation expense, net of tax | $	3,000	$ 2,200
Unamortized compensation expense | $	$ 13,100
Restricted and Performance-Based Shares [Member] | Employees [Member]
Additional Disclosures [Abstract]
Weighted average period of recognition for unrecognized compensation expense	4 years
Restricted and Performance-Based Shares [Member] | Directors [Member]
Additional Disclosures [Abstract]
Weighted average period of recognition for unrecognized compensation expense	9 months 18 days
Restricted and Performance-Based Shares [Member] | Executives and Directors [Member] | Minimum [Member]
Restricted and Performance Stock Grants [Abstract]
Post vesting holding period for restricted and performance shares issued	1 year
Restricted and Performance-Based Shares [Member] | Executives and Directors [Member] | Maximum [Member]
Restricted and Performance Stock Grants [Abstract]
Post vesting holding period for restricted and performance shares issued	2 years
2016 Omnibus Incentive Plan [Member] | Restricted and Performance-Based Shares [Member]
Restricted and Performance Stock Grants [Abstract]
Shares authorized for issuance (in shares)			950,000
2016 Omnibus Incentive Plan [Member] | Restricted and Performance-Based Shares [Member] | Minimum [Member]
Restricted and Performance Stock Grants [Abstract]
Shares authorized for issuance (in shares)			1,100,000
2016 Omnibus Incentive Plan [Member] | Restricted and Performance-Based Shares [Member] | Maximum [Member]
Restricted and Performance Stock Grants [Abstract]
Shares authorized for issuance (in shares)			2,050,000
2016 Omnibus Incentive Plan [Member] | Restricted and Performance-Based Shares [Member] | Non-employee Directors [Member]
Restricted and Performance Stock Grants [Abstract]
Shares authorized for issuance (in shares)			100,000
2016 Omnibus Incentive Plan [Member] | Restricted and Performance-Based Shares [Member] | Non-employee Directors [Member] | Minimum [Member]
Restricted and Performance Stock Grants [Abstract]
Shares authorized for issuance (in shares)			250,000
2016 Omnibus Incentive Plan [Member] | Restricted and Performance-Based Shares [Member] | Non-employee Directors [Member] | Maximum [Member]
Restricted and Performance Stock Grants [Abstract]
Shares authorized for issuance (in shares)			350,000

Employee Benefits (Details)

Employee Benefits (Details) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2021USD ($)	Jun. 30, 2021Employeeshares
Benefit Plan [Abstract]
Number of former union employees covered by the plan | Employee		16
Supplemental Executive Retirement Plan [Member]
Defined Contribution Pension and Other Postretirement Plans [Abstract]
Employer discretionary contribution amount | $	$ 0.5
Employee Stock Ownership Plan and Trust (ESOP) [Member]
Employee Stock Ownership Plan (ESOP), Debt Structure [Abstract]
Additional shares contributed to ESOP (in shares)		61,800
Shares released from trust (in shares)		61,800
Total remaining balance of shares in the ESOP (in shares)		200

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Earnings Attributable to SMP
Earnings from continuing operations	$ 27,995	$ 11,842	$ 50,159	$ 21,463
Loss from discontinued operations	(853)	(875)	(2,017)	(1,869)
Net earnings attributable to SMP	$ 27,142	$ 10,967	$ 48,142	$ 19,594
Basic Net Earnings Per Common Share Attributable to SMP
Earnings from continuing operations per common share (in dollars per share)	$ 1.26	$ 0.53	$ 2.25	$ 0.96
Loss from discontinued operations per common share (in dollars per share)	(0.04)	(0.04)	(0.09)	(0.08)
Net earnings per common share attributable to SMP	$ 1.22	$ 0.49	$ 2.16	$ 0.88
Weighted average common shares outstanding (in shares)	22,198,545	22,330,476	22,257,922	22,384,281
Diluted Net Earnings Per Common Share Attributable to SMP
Earnings from continuing operations per common share (in dollars per share)	$ 1.23	$ 0.52	$ 2.21	$ 0.94
Loss from discontinued operations per common share (in dollars per share)	(0.03)	(0.04)	(0.09)	(0.08)
Net earnings per common share attributable to SMP	$ 1.20	$ 0.48	$ 2.12	$ 0.86
Weighted average common shares outstanding (in shares)	22,198,545	22,330,476	22,257,922	22,384,281
Plus incremental shares from assumed conversions [Abstract]
Dilutive effect of restricted stock and performance-based stock (in shares)	487,000	389,000	483,000	410,000
Weighted average common shares outstanding - Diluted (in shares)	22,686,384	22,718,680	22,741,171	22,793,606
Restricted and Performance-Based Shares [Member]
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	239,000	261,000	258,000	257,000

Industry Segments (Details)

Industry Segments (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)Segment	Jun. 30, 2020USD ($)
Segment Reporting Information, Profit (Loss) [Abstract]
Number of reportable operating segments | Segment				2
Net sales	[1]	$ 342,076	$ 247,939	$ 618,629	$ 502,241
Operating Income		36,925	16,021	66,249	30,344
Intersegment Revenues [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	0	0	0	0
Engine Management [Member] | Reportable Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	233,216	173,153	445,234	374,271
Operating Income		30,384	16,722	61,498	38,155
Engine Management [Member] | Intersegment Revenues [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	5,185	2,666	10,544	6,680
Temperature Control [Member] | Reportable Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	106,471	72,392	168,944	123,834
Operating Income		13,229	3,967	16,821	3,619
Temperature Control [Member] | Intersegment Revenues [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	3,125	1,387	4,972	2,778
All Other [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	2,389	2,394	4,451	4,136
Operating Income		(6,688)	(4,668)	(12,070)	(11,430)
All Other [Member] | Intersegment Revenues [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	$ (8,310)	$ (4,053)	$ (15,516)	$ (9,458)
[1]	Segment net sales include intersegment sales in our Engine Management and Temperature Control segments.

Net Sales (Details)

Net Sales (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	$ 342,076	$ 247,939	$ 618,629	$ 502,241
Aftermarket [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	275,311	210,307	499,901	417,026
OE/OES [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	59,397	34,047	104,612	75,946
Export [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	7,368	3,585	14,116	9,269
Ignition, Emission Control, Fuel and Safety Related System Products [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	194,318	144,628	369,653	310,638
Wire and Cable [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	40,588	30,380	78,947	66,950
Compressors [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	69,963	45,371	103,355	70,577
Other Climate Control Parts [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	37,207	27,560	66,674	54,076
United States [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	303,515	223,661	543,352	445,916
Canada [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	14,454	9,176	28,416	20,648
Asia [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	9,515	8,260	19,226	17,814
Mexico [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	6,575	3,450	12,787	9,623
Europe [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	5,413	2,601	10,618	6,072
Other Foreign [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	2,604	791	4,230	2,168
Engine Management [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	233,216	173,153	445,234	374,271
Engine Management [Member] | Aftermarket [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	175,159	141,476	342,002	302,059
Engine Management [Member] | OE/OES [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	51,293	28,351	90,128	63,471
Engine Management [Member] | Export [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	6,764	3,326	13,104	8,741
Engine Management [Member] | Ignition, Emission Control, Fuel and Safety Related System Products [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	192,486	142,787	366,152	307,313
Engine Management [Member] | Wire and Cable [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	40,730	30,366	79,082	66,958
Engine Management [Member] | Compressors [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	0	0	0	0
Engine Management [Member] | Other Climate Control Parts [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	0	0	0	0
Engine Management [Member] | United States [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	202,274	153,891	383,375	328,270
Engine Management [Member] | Canada [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	7,433	4,525	16,007	11,114
Engine Management [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	9,447	8,216	19,082	17,675
Engine Management [Member] | Mexico [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	6,460	3,409	12,607	9,523
Engine Management [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	5,252	2,526	10,401	5,874
Engine Management [Member] | Other Foreign [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	2,350	586	3,762	1,815
Temperature Control [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	106,471	72,392	168,944	123,834
Temperature Control [Member] | Aftermarket [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	97,763	66,437	153,448	110,831
Temperature Control [Member] | OE/OES [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	8,104	5,696	14,484	12,475
Temperature Control [Member] | Export [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	604	259	1,012	528
Temperature Control [Member] | Ignition, Emission Control, Fuel and Safety Related System Products [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	0	0	0	0
Temperature Control [Member] | Wire and Cable [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	0	0	0	0
Temperature Control [Member] | Compressors [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	69,577	44,878	102,951	70,226
Temperature Control [Member] | Other Climate Control Parts [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	36,894	27,514	65,993	53,608
Temperature Control [Member] | United States [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	101,241	69,770	159,977	117,646
Temperature Control [Member] | Canada [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	4,632	2,257	7,958	5,398
Temperature Control [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	68	44	144	139
Temperature Control [Member] | Mexico [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	115	41	180	100
Temperature Control [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	161	75	217	198
Temperature Control [Member] | Other Foreign [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1]	254	205	468	353
Other [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	2,389	2,394	4,451	4,136
Other [Member] | Aftermarket [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	2,389	2,394	4,451	4,136
Other [Member] | OE/OES [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	0	0	0	0
Other [Member] | Export [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	0	0	0	0
Other [Member] | Ignition, Emission Control, Fuel and Safety Related System Products [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	1,832	1,841	3,501	3,325
Other [Member] | Wire and Cable [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	(142)	14	(135)	(8)
Other [Member] | Compressors [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	386	493	404	351
Other [Member] | Other Climate Control Parts [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	313	46	681	468
Other [Member] | United States [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	0	0	0	0
Other [Member] | Canada [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	2,389	2,394	4,451	4,136
Other [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	0	0	0	0
Other [Member] | Mexico [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	0	0	0	0
Other [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	0	0	0	0
Other [Member] | Other Foreign [Member]
Disaggregation of Revenue [Abstract]
Disaggregation of net sales	[1],[2]	$ 0	$ 0	$ 0	$ 0
[1]	Segment net sales include intersegment sales in our Engine Management and Temperature Control segments.
[2]	Other consists of the elimination of intersegment sales from our Engine Management and Temperature Control segments as well as sales from our Canadian business unit that does not meet the criteria of a reportable operating segment.  Intersegment wire and cable sales for the three months ended June 30, 2021, and for the six months ended June 30, 2021 and June 30, 2020 exceeded third party sales from our Canadian business unit.

Commitments and Contingencies,

Commitments and Contingencies, Asbestos (Details) $ in Thousands	1 Months Ended		3 Months Ended	6 Months Ended		238 Months Ended
	Nov. 30, 2020USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)	Jun. 30, 2021USD ($)Claim	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)Claim	Aug. 31, 2020USD ($)	Dec. 31, 2018USD ($)
Asbestos [Abstract]
Accrued asbestos liabilities			$ 55,226	$ 54,035		$ 54,035
Asbestos [Member]
Asbestos [Abstract]
Pending claims, approximate number | Claim				1,610		1,610
Payment for settled claims and awards related damages, including interest						$ 53,100
Accrued asbestos liabilities	$ 63,000	$ 58,100
Incremental pre-tax provision	$ 17,000
Asbestos [Member] | Minimum [Member]
Asbestos [Abstract]
Range of possible loss			63,000				$ 58,100
Asbestos [Member] | Maximum [Member]
Asbestos [Abstract]
Range of possible loss			99,100				$ 99,300
Asbestos [Member] | California Case [Member]
Asbestos [Abstract]
Range of possible loss								$ 7,600
Compensatory damages judgment			$ 7,600
Compensatory damages judgment interest percentage			10.00%
Asbestos [Member] | Discontinued Operations [Member]
Asbestos [Abstract]
Incremental pre-tax provision		$ 8,700
Total operating cash outflows related to discontinued operations				$ 5,500	$ 3,400
Asbestos [Member] | Discontinued Operations [Member] | Minimum [Member]
Asbestos [Abstract]
Range of possible loss			$ 48,700
Asbestos [Member] | Discontinued Operations [Member] | Maximum [Member]
Asbestos [Abstract]
Range of possible loss			$ 95,400

Commitments and Contingencies_2

Commitments and Contingencies, Warranties (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Changes in product warranties [Roll forward]
Balance, beginning of period	$ 16,948	$ 17,232	$ 17,663	$ 17,175
Liabilities accrued for current year sales	25,162	22,795	45,339	44,862
Settlements of warranty claims	(23,897)	(22,267)	(44,789)	(44,277)
Balance, end of period	$ 18,213	$ 17,760	$ 18,213	$ 17,760