NewMarket (NEU) 10-Q 25 Oct 18 2018 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information	9 Months Ended
	Sep. 30, 2018shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Emerging Growth Company	false
Small Business Company	false
Entity Registrant Name	NEWMARKET CORP
Entity Central Index Key	1,282,637
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	11,404,031

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 563,166	$ 548,416	$ 1,751,363	$ 1,638,422
Cost of Goods Sold	422,283	389,539	1,307,838	1,147,232
Gross profit	140,883	158,877	443,525	491,190
Selling, general, and administrative expenses	37,741	43,633	120,653	123,486
Research, development, and testing expenses	34,994	36,545	106,018	111,694
Operating profit	68,148	78,699	216,854	256,010
Interest and financing expenses, net	7,807	5,564	18,536	16,496
Other income (expense), net	7,973	3,842	20,872	10,986
Income before income tax expense	68,314	76,977	219,190	250,500
Income tax expense	9,833	17,205	47,259	64,063
Net income	$ 58,481	$ 59,772	$ 171,931	$ 186,437
Earnings per share - basic and diluted (in dollars per share)	$ 5.12	$ 5.04	$ 14.78	$ 15.73
Cash dividends declared per share (in dollars per share)	$ 1.75	$ 1.75	$ 5.25	$ 5.25

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 58,481	$ 59,772	$ 171,931	$ 186,437
Pension plans and other postretirement benefits:
Amortization of prior service cost (credit) included in net periodic benefit cost, net of income tax expense (benefit) of $(180) in third quarter 2018, $(296) in third quarter 2017, $(541) in nine months 2018 and $(888) in nine months 2017	(591)	(475)	(1,773)	(1,423)
Actuarial net gain (loss) arising during the period, net of income tax expense (benefit) of $(51) in third quarter and nine months 2018 and $(841) in third quarter and nine months 2017	(163)	(1,335)	(163)	(1,335)
Amortization of actuarial net loss (gain) included in net periodic benefit cost, net of income tax expense (benefit) of $318 in third quarter 2018, $487 in third quarter 2017, $1,037 in nine months 2018 and $1,563 in nine months 2017	1,003	845	3,270	2,692
Total pension plans and other postretirement benefits	249	(965)	1,334	(66)
Foreign currency translation adjustments, net of income tax expense (benefit) of $(109) in third quarter 2018, $712 in third quarter 2017, $(653) in nine months 2018 and $632 in nine months 2017	(3,760)	5,642	(3,793)	18,656
Other comprehensive income (loss)	(3,511)	4,677	(2,459)	18,590
Comprehensive income	$ 54,970	$ 64,449	$ 169,472	$ 205,027

Consolidated Statements Of Co_2

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Amortization of prior service cost (credit) included in net periodic benefit cost, income tax expense (benefit)	$ (180)	$ (296)	$ (541)	$ (888)
Actuarial net gain (loss) arising during the period, income tax expense (benefit)	(51)	(841)	(51)	(841)
Amortization of actuarial net loss (gain) included in net periodic benefit cost, income tax expense (benefit)	318	487	1,037	1,563
Foreign currency translation adjustments, income tax expense (benefit)	$ (109)	$ 712	$ (653)	$ 632

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 147,935	$ 84,166
Trade and other accounts receivable, less allowance for doubtful accounts	347,903	335,317
Inventories
Finished goods and work-in-process	317,276	319,036
Raw materials	58,754	51,485
Stores, supplies, and other	12,956	12,576
Total inventories	388,986	383,097
Prepaid expenses and other current assets	30,343	31,074
Total current assets	915,167	833,654
Property, plant, and equipment, at cost	1,417,732	1,474,962
Less accumulated depreciation and amortization	770,925	822,681
Net property, plant, and equipment	646,807	652,281
Intangibles (net of amortization) and goodwill	137,533	144,337
Prepaid pension cost	125,618	66,495
Deferred income taxes	4,628	4,349
Deferred charges and other assets	10,174	11,038
Total assets	1,839,927	1,712,154
Current liabilities:
Accounts payable	152,624	159,408
Accrued expenses	94,235	107,999
Dividends payable	18,257	19,055
Income taxes payable	10,866	16,340
Other current liabilities	3,263	13,991
Total current liabilities	279,245	316,793
Long-term debt	818,477	602,900
Other noncurrent liabilities	178,133	190,812
Total liabilities	1,275,855	1,110,505
Commitments and contingencies
Shareholders’ equity:
Common stock and paid-in capital (without par value; authorized shares - 80,000,000; issued and outstanding shares - 11,404,031 at September 30, 2018 and 11,779,978 at December 31, 2017)	0	0
Accumulated other comprehensive loss	(148,453)	(145,994)
Retained earnings	712,525	747,643
Total shareholders' equity	564,072	601,649
Total liabilities and shareholders’ equity	$ 1,839,927	$ 1,712,154

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, no par value
Common stock, authorized shares	80,000,000	80,000,000
Common stock, issued shares	11,404,031	11,779,978
Common stock, outstanding shares	11,404,031	11,779,978

Consolidated Statements Of Shar

Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock and Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]
Balance (in shares) at Dec. 31, 2016		11,845,972
Balance at Dec. 31, 2016	$ 483,251	$ 1,603	$ (182,510)	$ 664,158
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	186,437			186,437
Other comprehensive income (loss)	18,590		18,590
Cash dividends	(62,227)			(62,227)
Stock-based compensation (in shares)		7,135
Stock-based compensation	2,399	$ 2,396		3
Balance (in shares) at Sep. 30, 2017		11,853,107
Balance at Sep. 30, 2017	$ 628,450	$ 3,999	(163,920)	788,371
Balance (in shares) at Dec. 31, 2017	11,779,978	11,779,978
Balance at Dec. 31, 2017	$ 601,649	$ 0	(145,994)	747,643
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	171,931			171,931
Other comprehensive income (loss)	(2,459)		(2,459)
Cash dividends	(60,778)			(60,778)
Repurchases of common stock (in shares)		(385,181)
Repurchases of common stock	(148,649)	$ (2,366)		(146,283)
Stock-based compensation (in shares)		9,234
Stock-based compensation	$ 2,378	$ 2,366		12
Balance (in shares) at Sep. 30, 2018	11,404,031	11,404,031
Balance at Sep. 30, 2018	$ 564,072	$ 0	$ (148,453)	$ 712,525

Consolidated Statements Of Sh_2

Consolidated Statements Of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 1.75	$ 1.75	$ 5.25	$ 5.25

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of year	$ 84,166	$ 192,154
Cash flows from operating activities:
Net income	171,931	186,437
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	53,463	39,196
Noncash pension and postretirement expense	4,129	5,976
Deferred income tax expense	10,257	8,639
Working capital changes	(69,190)	(34,945)
Cash pension and postretirement contributions	(61,860)	(19,566)
Other, net	(7,585)	(7,986)
Net Cash Provided by (Used in) Operating Activities	101,145	177,751
Cash flows from investing activities:
Capital expenditures	(55,136)	(120,973)
Acquisition of business (net of $1,131 cash acquired)	0	(183,930)
Other, net	14,573	(2,000)
Net Cash Provided by (Used in) Investing Activities	(40,563)	(306,903)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	215,619	(146,000)
Issuance of 3.78% senior notes	0	250,000
Dividends paid	(60,778)	(62,227)
Repurchases of common stock	(148,649)	0
Other, net	(242)	(3,048)
Net Cash Provided by (Used in) Financing Activities	5,950	38,725
Effect of foreign exchange on cash and cash equivalents	(2,763)	3,269
Increase (decrease) in cash and cash equivalents	63,769	(87,158)
Cash and cash equivalents at end of period	$ 147,935	$ 104,996

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash acquired from acquisition	$ 0	$ 1,131
3.78% Senior Notes [Member]
Senior notes, interest rate	3.78%	3.78%

Financial Statement Presentatio

Financial Statement Presentation	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Financial Statement Presentation	Financial Statement Presentation In the opinion of management, the accompanying consolidated financial statements of NewMarket Corporation and its subsidiaries contain all necessary adjustments for the fair statement of, in all material respects, our consolidated financial position as of September 30, 2018 and December 31, 2017 , our consolidated results of operations and comprehensive income for the third quarter and nine months ended September 30, 2018 and September 30, 2017 , and our changes in shareholders' equity, and cash flows for the nine months ended September 30, 2018 and September 30, 2017 . All adjustments are of a normal, recurring nature, unless otherwise disclosed. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in the NewMarket Corporation Annual Report on Form 10-K for the year ended December 31, 2017 ( 2017 Annual Report), as filed with the Securities and Exchange Commission (SEC). The results of operations for the nine month period ended September 30, 2018 are not necessarily indicative of the results to be expected for the full year ending December 31, 2018 . The December 31, 2017 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. Unless the context otherwise indicates, all references to “we,” “us,” “our,” the “company,” and “NewMarket” are to NewMarket Corporation and its consolidated subsidiaries. During 2018, we identified fully depreciated property, plant, and equipment that is no longer in use and should have been written off in prior periods. During 2018, we reduced both property, plant, and equipment, at cost and accumulated depreciation and amortization on the Condensed Consolidated Balance Sheet by $86 million each. There was no impact to net property, plant, and equipment. Prior period amounts were not revised as the adjustments were not considered material. Prior period amounts on the Consolidated Statements of Income have been reclassified to reflect the retroactive adoption of Accounting Standard Update No. 2017-07, "Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost". See Note 13 for further information.

Acquisition of Business

Acquisition of Business	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Acquisition of Business	Acquisition of Business On July 3, 2017, Afton Chemical de Mexico, S.A. de C.V., an indirect, wholly-owned subsidiary of NewMarket, acquired approximately 99.5% of the outstanding capital stock of Aditivos Mexicanos, S.A. de C.V. (AMSA) for $185 million in cash. AMSA is a petroleum additives manufacturing, sales and distribution company based in Mexico City, Mexico. The results of AMSA's operations have been included in our consolidated financial statements since the date of acquisition and are not material. The noncontrolling interest is also not material. The acquisition agreement included all physical assets of AMSA. We performed a purchase price valuation to determine the fair values of the tangible and intangible assets acquired and liabilities assumed and the amount of goodwill to be recognized as of the acquisition date. The allocation of the purchase price is as follows (in millions): Cash $ 1 Trade accounts receivable 16 Inventory 6 Property, plant, and equipment 53 Goodwill 118 Intangible assets 18 Other long-term assets 2 Other current liabilities (7 ) Other long-term liabilities (3 ) Deferred taxes (19 ) Fair value of net assets acquired $ 185 Identified intangible assets acquired consisted of the following (in millions): Fair Value Estimated Useful Lives (in years) Formulas and technology $ 9 3-6 Customer base 9 4 Total identified intangible assets $ 18 As part of the acquisition, we recorded $118 million of goodwill. The goodwill recognized is attributable to expected synergies, including a secure supply source for certain raw materials, as well as the skilled assembled workforce of AMSA. All of the goodwill recognized is part of the petroleum additives segment, and none is deductible for Mexican tax purposes. Pro forma results of operations are not presented as the acquisition was not considered material to our consolidated results.

Net Sales

Net Sales	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Net Sales	3. Net Sales On January 1, 2018, we adopted Accounting Standard Codification 606 (ASC 606), "Revenue from Contracts with Customers" using the modified retrospective method and applying the standard only to uncompleted contracts at the date of adoption. The impact of adopting ASC 606 did not result in a change to income, and therefore we are not reflecting a cumulative effect to the opening balance of retained earnings due to the adoption of ASC 606. The comparative period has not been adjusted and continues to be reported under the accounting standards in effect for that period. Our revenues are primarily derived from the manufacture and sale of petroleum additives products. We sell petroleum additives products across the world including to customers located in the United States, Europe, Asia Pacific (including China), Latin America, Canada, India, and the Middle East. Our customers primarily consist of global, national, and independent oil companies. While some of our customers have payment terms beyond 30 days, we do not provide extended payment terms of a year or more, nor do our contracts include a financing component. Our allowance for doubtful accounts is immaterial, as are any bad debts we incur. In limited cases, we collect funds in advance of shipping product to our customers and recognizing the related revenue. These prepayments from customers are recorded as a contract liability to our customer until we recognize the revenue. Prepayments from our customers totaled $0.8 million at September 30, 2018 . Revenue recognized from funds collected in advance from customers in an earlier period was $3.2 million in 2018 . We recognize revenue when control of the product is transferred to our customer and for an amount that reflects the consideration we expect to collect from the customer. Control is generally transferred to the customer when title transfers (which may include physical possession by the customer), we have a right to payment from the customer, the customer has accepted the product, and the customer has assumed the risks and rewards of ownership. We have supplier managed inventory arrangements with some of our customers to facilitate on-demand product availability. In some cases, the inventory resides at a customer site, although title has not transferred, we are not entitled to payment, and we have not invoiced for the product. We have evaluated the contract terms under these arrangements and have determined that control transfers when the customer uses the product, at which time revenue is recognized. Our contracts generally include one performance obligation, which is providing petroleum additives products. The performance obligation is satisfied at a point in time when products are shipped, delivered, or consumed by the customer, depending on the underlying contracts. Taxes assessed by a governmental authority which are concurrent with sales to our customers, including sales, use, value-added, and revenue-related excise taxes, are collected by us from the customer and are not included in net sales, but are reflected in accrued expenses until remitted to the appropriate governmental authority. When we are responsible for shipping and handling costs after title has transferred, we account for those as fulfillment costs and include them in cost of goods sold. Some of our contracts include variable consideration in the form of rebates or business development funds. We record rebates at the point of sale as contra-revenue when we can reasonably estimate the amount of the rebate. The estimates are based on our best judgment at the time of sale, which includes anticipated as well as historical performance. Depending upon the specific terms of a business development fund, amounts are accrued as contra-revenue at the point of sale or are expensed when costs are incurred by us. We regularly review both rebates and business development funds and make adjustments when necessary, recognizing the full amount of any adjustment in the period identified. We recognized an increase to net sales of $0.8 million for the third quarter of 2018 and an increase of $2.0 million for the first nine months of 2018 related to adjustments to rebates or business development funds which were recognized in revenue in a prior period. At September 30, 2018 , accrued rebates were $20.9 million and accrued business development funds were $2.1 million . The following table provides information on our net sales by geographic area. Information on net sales by segment is in Note 4. Third Quarter Ended Nine Months Ended (in thousands) 2018 2018 Net sales United States $ 180,142 $ 547,005 China 57,891 183,980 Europe, Middle East, Africa, India 180,850 588,248 Asia Pacific, except China 87,661 254,350 Other foreign 56,622 177,780 Net sales $ 563,166 $ 1,751,363

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Information	Segment Information The tables below show our consolidated segment results. The “All other” category includes the operations of the TEL business, as well as certain contracted manufacturing and services associated with Ethyl Corporation (Ethyl). Net Sales by Segment Third Quarter Ended Nine Months Ended (in thousands) 2018 2017 2018 2017 Petroleum additives Lubricant additives $ 462,865 $ 443,355 $ 1,440,227 $ 1,340,693 Fuel additives 97,657 102,804 303,405 289,652 Total 560,522 546,159 1,743,632 1,630,345 All other 2,644 2,257 7,731 8,077 Net sales $ 563,166 $ 548,416 $ 1,751,363 $ 1,638,422 Segment Operating Profit Third Quarter Ended Nine Months Ended (in thousands) 2018 2017 2018 2017 Petroleum additives $ 75,824 $ 84,173 $ 231,494 $ 270,841 All other (2,295 ) 1,093 (1,966 ) 2,943 Segment operating profit 73,529 85,266 229,528 273,784 Corporate, general, and administrative expenses (5,402 ) (6,534 ) (16,033 ) (17,561 ) Interest and financing expenses, net (7,807 ) (5,564 ) (18,536 ) (16,496 ) Other income (expense), net 7,994 3,809 24,231 10,773 Income before income tax expense $ 68,314 $ 76,977 $ 219,190 $ 250,500

Pension Plans and Other Postret

Pension Plans and Other Postretirement Benefits	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Pension Plans and Other Postretirement Benefits	Pension Plans and Other Postretirement Benefits The table below shows cash contributions made during the nine months ended September 30, 2018 , as well as the remaining cash contributions we expect to make during the year ending December 31, 2018 , for our domestic and foreign pension plans and domestic postretirement benefit plan. (in thousands) Actual Cash Contributions for Nine Months Ended September 30, 2018 Expected Remaining Cash Contributions for Year Ending December 31, 2018 Domestic plans Pension benefits $ 55,983 $ 1,328 Postretirement benefits 1,354 452 Foreign plans Pension benefits 4,523 1,529 The tables below present information on net periodic benefit cost (income) for our domestic and foreign pension plans and domestic postretirement benefit plan. The service cost component of net periodic benefit cost (income) is presented in operating profit in the same income statement line as the related employee compensation costs. The remaining components of net periodic benefit cost (income) are presented in other income (expense), net on the consolidated statements of income. Domestic Pension Benefits Postretirement Benefits Third Quarter Ended September 30, (in thousands) 2018 2017 2018 2017 Service cost $ 3,599 $ 3,501 $ 239 $ 208 Interest cost 3,257 3,248 355 400 Expected return on plan assets (7,523 ) (6,604 ) (228 ) (281 ) Amortization of prior service cost (credit) 7 7 (757 ) (757 ) Amortization of actuarial net (gain) loss 1,172 1,085 0 0 Net periodic benefit cost (income) $ 512 $ 1,237 $ (391 ) $ (430 ) Domestic Pension Benefits Postretirement Benefits Nine Months Ended September 30, (in thousands) 2018 2017 2018 2017 Service cost $ 11,543 $ 10,259 $ 672 $ 581 Interest cost 9,942 9,966 1,094 1,186 Expected return on plan assets (22,413 ) (19,609 ) (726 ) (898 ) Amortization of prior service cost (credit) 20 20 (2,271 ) (2,271 ) Amortization of actuarial net (gain) loss 3,854 3,544 0 0 Net periodic benefit cost (income) $ 2,946 $ 4,180 $ (1,231 ) $ (1,402 ) Foreign Pension Benefits Third Quarter Ended September 30, Nine Months Ended September 30, (in thousands) 2018 2017 2018 2017 Service cost $ 1,975 $ 1,942 $ 6,114 $ 5,645 Interest cost 1,105 1,076 3,425 3,141 Expected return on plan assets (2,423 ) (2,127 ) (7,519 ) (6,229 ) Amortization of prior service cost (credit) (20 ) (20 ) (62 ) (58 ) Amortization of actuarial net (gain) loss 148 243 456 699 Net periodic benefit cost (income) $ 785 $ 1,114 $ 2,414 $ 3,198

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share We had 24,832 shares of nonvested restricted stock at September 30, 2018 and 23,615 shares of nonvested restricted stock at September 30, 2017 that were excluded from the calculation of diluted earnings per share, as their effect on earnings per share would be anti-dilutive. The nonvested restricted stock is considered a participating security since the restricted stock contains nonforfeitable rights to dividends. As such, we use the two-class method to compute basic and diluted earnings per share for all periods presented since this method yields a more dilutive result than the treasury-stock method. The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share. Third Quarter Ended Nine Months Ended (in thousands, except per-share amounts) 2018 2017 2018 2017 Earnings per share numerator: Net income attributable to common shareholders before allocation of earnings to participating securities $ 58,481 $ 59,772 $ 171,931 $ 186,437 Earnings allocated to participating securities 121 118 340 370 Net income attributable to common shareholders after allocation of earnings to participating securities $ 58,360 $ 59,654 $ 171,591 $ 186,067 Earnings per share denominator: Weighted-average number of shares of common stock outstanding - basic and diluted 11,409 11,829 11,606 11,829 Earnings per share - basic and diluted $ 5.12 $ 5.04 $ 14.78 $ 15.73

Intangibles (Net of Amortizatio

Intangibles (Net of Amortization) and Goodwill	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles (Net of Amortization) and Goodwill	Intangibles (Net of Amortization) and Goodwill The net carrying amount of intangibles and goodwill was $138 million at September 30, 2018 and $144 million at December 31, 2017 . The gross carrying amount and accumulated amortization of each type of intangible asset and goodwill are presented in the table below. September 30, 2018 December 31, 2017 (in thousands) Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Amortizing intangible assets Formulas and technology $ 9,600 $ 2,708 $ 12,339 $ 3,280 Contract 2,000 350 2,000 200 Customer bases 14,240 8,214 15,759 5,140 Trademarks and trade names 0 0 1,531 1,213 Goodwill 122,965 122,541 $ 148,805 $ 11,272 $ 154,170 $ 9,833 All of the intangibles relate to the petroleum additives segment. The change in the gross carrying amount between December 31, 2017 and September 30, 2018 is due to disposal of certain intangible assets, an immaterial adjustment to goodwill related to AMSA, and foreign currency fluctuation. See Note 2 for more information on the AMSA acquisition. There is no accumulated goodwill impairment. Amortization expense was (in thousands): Third quarter ended September 30, 2018 $ 1,470 Nine months ended September 30, 2018 5,944 Third quarter ended September 30, 2017 928 Nine months ended September 30, 2017 1,364 Estimated amortization expense for the remainder of 2018 , as well as estimated annual amortization expense related to our intangible assets for the next five years, is expected to be (in thousands): 2018 $ 1,467 2019 4,207 2020 2,907 2021 2,156 2022 1,423 2023 907 We amortize contracts over 10 years; customer bases over 4 to 20 years; and formulas and technology over 3 to 6 years.

Long-term Debt

Long-term Debt	9 Months Ended
	Sep. 30, 2018
Long-term Debt and Capital Lease Obligations [Abstract]
Long-term Debt	Long-term Debt (in thousands) September 30, December 31, Senior notes - 4.10% due 2022 (net of related deferred financing costs) $ 347,530 $ 347,091 Senior notes - 3.78% due 2029 250,000 250,000 Revolving credit facility 215,619 0 Capital lease obligations 5,328 5,809 $ 818,477 $ 602,900 The outstanding 4.10% senior notes have an aggregate principal amount of $350 million and are registered under the Securities Act of 1933, as amended (Securities Act). The outstanding 3.78% senior notes are unsecured and were issued in a 2017 private placement with The Prudential Insurance Company of America and certain other purchasers. We were in compliance with all covenants under both issuances of the senior notes as of September 30, 2018 and December 31, 2017 . The revolving credit facility has a term of five years and matures on September 22, 2022 . The obligations under the revolving agreement are unsecured and are fully and unconditionally guaranteed by NewMarket. The average interest rate for borrowings under our revolving credit facility was 3.0% during the first nine months of 2018 and 2.5% during the full year of 2017 . We were in compliance with all covenants under the revolving credit facility as of September 30, 2018 and December 31, 2017 . The following table provides information related to the unused portion of our revolving credit facility: (in thousands) September 30, December 31, Maximum borrowing capacity under the revolving credit facility $ 850,000 $ 850,000 Outstanding borrowings under the revolving credit facility 215,619 0 Outstanding letters of credit 2,710 2,830 Unused portion of revolving credit facility $ 631,671 $ 847,170 The capital lease obligations are related to the Singapore manufacturing facility.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Matters We are involved in legal proceedings that are incidental to our business and may include administrative or judicial actions. Some of these legal proceedings involve governmental authorities and relate to environmental matters. For further information, see Environmental below. While it is not possible to predict or determine with certainty the outcome of any legal proceeding, we believe the outcome of any of these proceedings, or all of them combined, will not result in a material adverse effect on our consolidated results of operations, financial condition, or cash flows. In late 2013, Afton Chemical Corporation (Afton) initiated a voluntary self-audit of its compliance with certain sections of Toxic Substances Control Act (TSCA) under the Environmental Protection Agency's (EPA) audit policy (Audit Policy). Afton concluded its self-audit, sending its notice of this conclusion to the EPA on August 1, 2018. Any known potential findings and/or violations were disclosed on or before the conclusion of the self-audit. In August 2014, the EPA began an EPA TSCA inspection of both Afton and Ethyl. To date, however, the EPA has not noticed Afton or Ethyl of any findings, violations, or the conclusion of this inspection. While it is not possible to predict or determine with certainty the outcomes of Afton’s self-audit or the EPA’s inspection, we do not believe that any disclosures or findings identified as a result of Afton’s self-audit or the EPA’s TSCA inspection will have a material adverse effect on our consolidated results of operations, financial condition, or cash flows. Environmental We are involved in environmental proceedings and potential proceedings relating to soil and groundwater contamination, disposal of hazardous waste, and other environmental matters at several of our current or former facilities, or at third-party sites where we have been designated as a potentially responsible party (PRP). While we believe we are currently adequately accrued for known environmental issues, it is possible that unexpected future costs could have a significant impact on our financial position, results of operations, and cash flows. Our total accruals for environmental remediation, dismantling, and decontamination were approximately $14 million at both September 30, 2018 and December 31, 2017 . Of the total accrual, the current portion is included in accrued expenses and the noncurrent portion is included in other noncurrent liabilities on the Condensed Consolidated Balance Sheets. Our more significant environmental sites include a former TEL plant site in Louisiana (the Louisiana site) and a Houston, Texas plant site (the Texas site). Together, the amounts accrued on a discounted basis related to these sites represented approximately $8 million of the total accrual above at September 30, 2018 and $7 million at December 31, 2017 , using discount rates ranging from 3% to 9% at September 30, 2018 and 4% to 9% at December 31, 2017 . The aggregate undiscounted amount for these sites was $11 million at September 30, 2018 and $10 million at December 31, 2017 . Of the total accrued for these two sites, the amount related to remediation of groundwater and soil for the Louisiana site was $4 million at September 30, 2018 and $3 million at December 31, 2017 . The amount related to remediation of groundwater and soil for the Texas site was $4 million at both September 30, 2018 and December 31, 2017 . In 2000, the EPA named us as a PRP under Superfund law for the clean-up of soil and groundwater contamination at the five grouped disposal sites known as "Sauget Area 2 Sites" in Sauget, Illinois. Without admitting any fact, responsibility, fault, or liability in connection with this site, we are participating with other PRPs in site investigations and feasibility studies. In December 2013, the EPA issued its Record of Decision (ROD) confirming its remedies for the selected Sauget Area 2 Sites. In August 2017, the EPA issued a Special Notice Letter to over 75 PRPs notifying them of potential liability and encouraging the PRPs to voluntarily perform or finance the response actions detailed in the ROD. We have accrued our estimated proportional share of the remedial costs and expenses addressed in the ROD. We do not believe there is any additional information available as a basis for revision of the liability that we have established at September 30, 2018 . The amount accrued for this site is not material.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss The balances of, and changes in, the components of accumulated other comprehensive loss, net of tax, consist of the following: (in thousands) Pension Plans and Other Postretirement Benefits Foreign Currency Translation Adjustments Accumulated Other Comprehensive (Loss) Income Balance at December 31, 2016 $ (76,187 ) $ (106,323 ) $ (182,510 ) Other comprehensive income (loss) before reclassifications (1,335 ) 18,656 17,321 Amounts reclassified from accumulated other comprehensive loss (a) 1,269 0 1,269 Other comprehensive income (loss) (66 ) 18,656 18,590 Balance at September 30, 2017 $ (76,253 ) $ (87,667 ) $ (163,920 ) Balance at December 31, 2017 $ (63,520 ) $ (82,474 ) $ (145,994 ) Other comprehensive income (loss) before reclassifications (163 ) (3,793 ) (3,956 ) Amounts reclassified from accumulated other comprehensive loss (a) 1,497 0 1,497 Other comprehensive income (loss) 1,334 (3,793 ) (2,459 ) Balance at September 30, 2018 $ (62,186 ) $ (86,267 ) $ (148,453 ) (a) The pension plan and other postretirement benefit components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 5 in this Quarterly Report on Form 10-Q and Note 17 in our 2017 Annual Report for further information.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The carrying amount of cash and cash equivalents in the Condensed Consolidated Balance Sheets, as well as the fair value, was $148 million at September 30, 2018 and $84 million at December 31, 2017 . The fair value is categorized in Level 1 of the fair value hierarchy. No material events occurred during the nine months ended September 30, 2018 requiring adjustment to the recognized balances of assets or liabilities which are recorded at fair value on a nonrecurring basis. Long-term debt – We record the carrying amount of our long-term debt at historical cost, less deferred financing costs related to the 4.10% senior notes. The estimated fair value of our long-term debt is shown in the table below and is based primarily on estimated current rates available to us for debt of the same remaining duration and adjusted for nonperformance risk and credit risk. The estimated fair value of our publicly-traded 4.10% senior notes included in long-term debt in the table below is based on the last quoted price closest to September 30, 2018 . The fair value of our debt instruments is categorized as Level 2. September 30, 2018 December 31, 2017 (in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Long-term debt (excluding capital lease obligations) $ 813,149 $ 803,977 $ 597,091 $ 623,557

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes In December 2017, the United States enacted tax legislation commonly known as the Tax Cuts and Jobs Act (Tax Reform Act), which required a one-time transition tax expense in 2017 on the deemed repatriation of previously deferred foreign earnings and reduced the U.S. corporate tax rate to 21% effective January 1, 2018. As of September 30, 2018 , our estimate of the transition tax expense is based on currently available information and interpretations regarding the application of the new tax provisions. The U.S. Treasury, the Internal Revenue Service, and other standard-setting bodies could interpret or issue guidance regarding the provisions of the Tax Reform Act that differ from our interpretation, which could impact our provisional expense. Additional work is necessary to further analyze our historical earnings and other items that affect the calculations. Adjustments to the provisional amounts recorded as of September 30, 2018 and December 31, 2017 , will affect our tax expense or benefit from continuing operations in the period that the final adjustments are determined, which will be no later than the fourth quarter of 2018. During the third quarter of 2018, we recorded a tax benefit of $6 million associated with the Tax Reform Act, as a result of the reduction to the deferred tax liability for our U.S. salaried pension plan. We are evaluating certain aspects of the Tax Reform Act which could further impact our deferred tax balances and have not made a policy election with respect to the deferred tax effects of the global intangible low-taxed income (GILTI) provision of the Tax Reform Act. The policy decision will be made no later than the fourth quarter of 2018, and any impact of the decision will be recorded in continuing operations in the fourth quarter.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements On January 1, 2018, we adopted Accounting Standard Codification 606 (ASC 606), "Revenue from Contracts with Customers." Further information on the adoption is in Note 3. Also on January 1, 2018, we adopted Accounting Standards Update No. 2017-07, "Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost" (ASU 2017-07) on a retrospective basis for the consolidated statements of income and on a prospective basis for capitalization of the service cost component in assets. ASU 2017-07 requires that an employer report the service cost component of net benefit cost in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the consolidated statements of income outside of operating profit. There was no change to net income for the 2017 period as a result of adopting ASU 2017-07 on a retrospective basis for the consolidated statements of income, but there is a change within operating profit with a corresponding change in other income (expense), net to reflect the impact of presenting all components of net benefit cost, except for service cost, outside of operating profit. As a result of the retrospective application for the nine months ended September 30, 2017, operating profit decreased by $11 million and other income (expense), net increased by $11 million in income. As allowed under ASU 2017-07, we utilized the amounts disclosed in the prior year for the various components of net benefit costs as the basis for the retrospective application. See Note 5 for the components of our net benefit costs. Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2016-02, "Leases (Topic 842)" (ASU 2016-02). The FASB issued ASU 2016-02 to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and requiring disclosures related to certain information about leasing arrangements. Under the new guidance, operating leases are, in most cases, required to be recognized on the balance sheet as a lease asset and liability. A modified retrospective approach was required for the adoption of ASU 2016-02, which is effective for our reporting period beginning January 1, 2019. In 2018, the FASB issued additional accounting standard updates clarifying certain provisions, as well as providing for a second transition method allowing entities to initially apply the standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings. We are currently assessing the impact that the adoption of ASU 2016-02 and related 2018 updates will have on our consolidated financial statements. In February 2018, the FASB issued Accounting Standards Update No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" (ASU 2018-02). ASU 2018-02 allows, but does not require, reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects that resulted from the Tax Reform Act at the end of 2017. ASU 2018-02, which is effective for our reporting period beginning January 1, 2019, also requires additional disclosures surrounding stranded tax effects. Early adoption is permitted. We are currently assessing the impact that the adoption of ASU 2018-02 will have on our consolidated financial statements.

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Long-Term Debt	We record the carrying amount of our long-term debt at historical cost, less deferred financing costs related to the 4.10% senior notes.
Revenue Recognition, Policy [Policy Text Block]	We recognize revenue when control of the product is transferred to our customer and for an amount that reflects the consideration we expect to collect from the customer. Control is generally transferred to the customer when title transfers (which may include physical possession by the customer), we have a right to payment from the customer, the customer has accepted the product, and the customer has assumed the risks and rewards of ownership. We have supplier managed inventory arrangements with some of our customers to facilitate on-demand product availability. In some cases, the inventory resides at a customer site, although title has not transferred, we are not entitled to payment, and we have not invoiced for the product. We have evaluated the contract terms under these arrangements and have determined that control transfers when the customer uses the product, at which time revenue is recognized. Our contracts generally include one performance obligation, which is providing petroleum additives products. The performance obligation is satisfied at a point in time when products are shipped, delivered, or consumed by the customer, depending on the underlying contracts. Taxes assessed by a governmental authority which are concurrent with sales to our customers, including sales, use, value-added, and revenue-related excise taxes, are collected by us from the customer and are not included in net sales, but are reflected in accrued expenses until remitted to the appropriate governmental authority. When we are responsible for shipping and handling costs after title has transferred, we account for those as fulfillment costs and include them in cost of goods sold. Some of our contracts include variable consideration in the form of rebates or business development funds. We record rebates at the point of sale as contra-revenue when we can reasonably estimate the amount of the rebate. The estimates are based on our best judgment at the time of sale, which includes anticipated as well as historical performance. Depending upon the specific terms of a business development fund, amounts are accrued as contra-revenue at the point of sale or are expensed when costs are incurred by us. We regularly review both rebates and business development funds and make adjustments when necessary, recognizing the full amount of any adjustment in the period identified.

Acquisition of Business (Tables

Acquisition of Business (Tables)	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions	The allocation of the purchase price is as follows (in millions): Cash $ 1 Trade accounts receivable 16 Inventory 6 Property, plant, and equipment 53 Goodwill 118 Intangible assets 18 Other long-term assets 2 Other current liabilities (7 ) Other long-term liabilities (3 ) Deferred taxes (19 ) Fair value of net assets acquired $ 185
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	Identified intangible assets acquired consisted of the following (in millions): Fair Value Estimated Useful Lives (in years) Formulas and technology $ 9 3-6 Customer base 9 4 Total identified intangible assets $ 18

Net Sales (Tables)

Net Sales (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Net Sales by Geographic Area	The following table provides information on our net sales by geographic area. Information on net sales by segment is in Note 4. Third Quarter Ended Nine Months Ended (in thousands) 2018 2018 Net sales United States $ 180,142 $ 547,005 China 57,891 183,980 Europe, Middle East, Africa, India 180,850 588,248 Asia Pacific, except China 87,661 254,350 Other foreign 56,622 177,780 Net sales $ 563,166 $ 1,751,363

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Net Sales by Segment	Net Sales by Segment Third Quarter Ended Nine Months Ended (in thousands) 2018 2017 2018 2017 Petroleum additives Lubricant additives $ 462,865 $ 443,355 $ 1,440,227 $ 1,340,693 Fuel additives 97,657 102,804 303,405 289,652 Total 560,522 546,159 1,743,632 1,630,345 All other 2,644 2,257 7,731 8,077 Net sales $ 563,166 $ 548,416 $ 1,751,363 $ 1,638,422
Segment Operating Profit	Segment Operating Profit Third Quarter Ended Nine Months Ended (in thousands) 2018 2017 2018 2017 Petroleum additives $ 75,824 $ 84,173 $ 231,494 $ 270,841 All other (2,295 ) 1,093 (1,966 ) 2,943 Segment operating profit 73,529 85,266 229,528 273,784 Corporate, general, and administrative expenses (5,402 ) (6,534 ) (16,033 ) (17,561 ) Interest and financing expenses, net (7,807 ) (5,564 ) (18,536 ) (16,496 ) Other income (expense), net 7,994 3,809 24,231 10,773 Income before income tax expense $ 68,314 $ 76,977 $ 219,190 $ 250,500

Pension Plans and Other Postr_2

Pension Plans and Other Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Cash Contributions Made And Expected Remaining Contributions For Pension And Postretirement Benefit Plans	The table below shows cash contributions made during the nine months ended September 30, 2018 , as well as the remaining cash contributions we expect to make during the year ending December 31, 2018 , for our domestic and foreign pension plans and domestic postretirement benefit plan. (in thousands) Actual Cash Contributions for Nine Months Ended September 30, 2018 Expected Remaining Cash Contributions for Year Ending December 31, 2018 Domestic plans Pension benefits $ 55,983 $ 1,328 Postretirement benefits 1,354 452 Foreign plans Pension benefits 4,523 1,529
Net Periodic Benefit Cost (Income) For Pension And Postretirement Benefit Plans	The tables below present information on net periodic benefit cost (income) for our domestic and foreign pension plans and domestic postretirement benefit plan. The service cost component of net periodic benefit cost (income) is presented in operating profit in the same income statement line as the related employee compensation costs. The remaining components of net periodic benefit cost (income) are presented in other income (expense), net on the consolidated statements of income. Domestic Pension Benefits Postretirement Benefits Third Quarter Ended September 30, (in thousands) 2018 2017 2018 2017 Service cost $ 3,599 $ 3,501 $ 239 $ 208 Interest cost 3,257 3,248 355 400 Expected return on plan assets (7,523 ) (6,604 ) (228 ) (281 ) Amortization of prior service cost (credit) 7 7 (757 ) (757 ) Amortization of actuarial net (gain) loss 1,172 1,085 0 0 Net periodic benefit cost (income) $ 512 $ 1,237 $ (391 ) $ (430 ) Domestic Pension Benefits Postretirement Benefits Nine Months Ended September 30, (in thousands) 2018 2017 2018 2017 Service cost $ 11,543 $ 10,259 $ 672 $ 581 Interest cost 9,942 9,966 1,094 1,186 Expected return on plan assets (22,413 ) (19,609 ) (726 ) (898 ) Amortization of prior service cost (credit) 20 20 (2,271 ) (2,271 ) Amortization of actuarial net (gain) loss 3,854 3,544 0 0 Net periodic benefit cost (income) $ 2,946 $ 4,180 $ (1,231 ) $ (1,402 ) Foreign Pension Benefits Third Quarter Ended September 30, Nine Months Ended September 30, (in thousands) 2018 2017 2018 2017 Service cost $ 1,975 $ 1,942 $ 6,114 $ 5,645 Interest cost 1,105 1,076 3,425 3,141 Expected return on plan assets (2,423 ) (2,127 ) (7,519 ) (6,229 ) Amortization of prior service cost (credit) (20 ) (20 ) (62 ) (58 ) Amortization of actuarial net (gain) loss 148 243 456 699 Net periodic benefit cost (income) $ 785 $ 1,114 $ 2,414 $ 3,198

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings Per Share	The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share. Third Quarter Ended Nine Months Ended (in thousands, except per-share amounts) 2018 2017 2018 2017 Earnings per share numerator: Net income attributable to common shareholders before allocation of earnings to participating securities $ 58,481 $ 59,772 $ 171,931 $ 186,437 Earnings allocated to participating securities 121 118 340 370 Net income attributable to common shareholders after allocation of earnings to participating securities $ 58,360 $ 59,654 $ 171,591 $ 186,067 Earnings per share denominator: Weighted-average number of shares of common stock outstanding - basic and diluted 11,409 11,829 11,606 11,829 Earnings per share - basic and diluted $ 5.12 $ 5.04 $ 14.78 $ 15.73

Intangibles (Net of Amortizat_2

Intangibles (Net of Amortization) and Goodwill (Tables)	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Information Related to Intangible Assets and Goodwill	The gross carrying amount and accumulated amortization of each type of intangible asset and goodwill are presented in the table below. September 30, 2018 December 31, 2017 (in thousands) Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Amortizing intangible assets Formulas and technology $ 9,600 $ 2,708 $ 12,339 $ 3,280 Contract 2,000 350 2,000 200 Customer bases 14,240 8,214 15,759 5,140 Trademarks and trade names 0 0 1,531 1,213 Goodwill 122,965 122,541 $ 148,805 $ 11,272 $ 154,170 $ 9,833
Schedule Of Amortization Expense	Amortization expense was (in thousands): Third quarter ended September 30, 2018 $ 1,470 Nine months ended September 30, 2018 5,944 Third quarter ended September 30, 2017 928 Nine months ended September 30, 2017 1,364
Schedule Of Estimated Annual Amortization Expense Related To Intangible Assets	Estimated amortization expense for the remainder of 2018 , as well as estimated annual amortization expense related to our intangible assets for the next five years, is expected to be (in thousands): 2018 $ 1,467 2019 4,207 2020 2,907 2021 2,156 2022 1,423 2023 907

Long-term Debt (Tables)

Long-term Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Long-term Debt and Capital Lease Obligations [Abstract]
Schedule Of Long-Term Debt	(in thousands) September 30, December 31, Senior notes - 4.10% due 2022 (net of related deferred financing costs) $ 347,530 $ 347,091 Senior notes - 3.78% due 2029 250,000 250,000 Revolving credit facility 215,619 0 Capital lease obligations 5,328 5,809 $ 818,477 $ 602,900
Schedule Of Unused Portion Of Revolving Credit Facility	The following table provides information related to the unused portion of our revolving credit facility: (in thousands) September 30, December 31, Maximum borrowing capacity under the revolving credit facility $ 850,000 $ 850,000 Outstanding borrowings under the revolving credit facility 215,619 0 Outstanding letters of credit 2,710 2,830 Unused portion of revolving credit facility $ 631,671 $ 847,170

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Components of Accumulated Other Comprehensive Loss, Net of Tax	The balances of, and changes in, the components of accumulated other comprehensive loss, net of tax, consist of the following: (in thousands) Pension Plans and Other Postretirement Benefits Foreign Currency Translation Adjustments Accumulated Other Comprehensive (Loss) Income Balance at December 31, 2016 $ (76,187 ) $ (106,323 ) $ (182,510 ) Other comprehensive income (loss) before reclassifications (1,335 ) 18,656 17,321 Amounts reclassified from accumulated other comprehensive loss (a) 1,269 0 1,269 Other comprehensive income (loss) (66 ) 18,656 18,590 Balance at September 30, 2017 $ (76,253 ) $ (87,667 ) $ (163,920 ) Balance at December 31, 2017 $ (63,520 ) $ (82,474 ) $ (145,994 ) Other comprehensive income (loss) before reclassifications (163 ) (3,793 ) (3,956 ) Amounts reclassified from accumulated other comprehensive loss (a) 1,497 0 1,497 Other comprehensive income (loss) 1,334 (3,793 ) (2,459 ) Balance at September 30, 2018 $ (62,186 ) $ (86,267 ) $ (148,453 ) (a) The pension plan and other postretirement benefit components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 5 in this Quarterly Report on Form 10-Q and Note 17 in our 2017 Annual Report for further information.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Estimated Fair Value Of Long-Term Debt	September 30, 2018 December 31, 2017 (in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Long-term debt (excluding capital lease obligations) $ 813,149 $ 803,977 $ 597,091 $ 623,557

Financial Statement Presentat_2

Financial Statement Presentation (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reduction of Property, Plant and Equipment, at cost	$ (86)
Reduction of Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ (86)

Acquisition of Business (Narrat

Acquisition of Business (Narrative) (Details) $ in Thousands	Jul. 03, 2017USD ($)
Business Acquisition [Line Items]
Percentage of business acquired	99.50%
Payments to Acquire Businesses, Gross	$ 185,000
Goodwill	118,000
MEXICO
Business Acquisition [Line Items]
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 0

Acquisition of Business (Schedu

Acquisition of Business (Schedule of Business Acquisition, By Acquisition) (Details) $ in Millions	Jul. 03, 2017USD ($)
Business Combinations [Abstract]
Cash	$ 1
Trade accounts receivable	16
Inventory	6
Property, plant, and equipment	53
Goodwill	118
Intangible assets	18
Other long-term assets	2
Other current liabilities	(7)
Other long-term liabilities	(3)
Deferred taxes	(19)
Fair value of net assets acquired	$ 185

Acquisition of Business (Sche_2

Acquisition of Business (Schedule of Finite Lived Intangible Assets Acquired As Part of Business Combination) (Details) - USD ($) $ in Millions	Jul. 03, 2017	Sep. 30, 2018
Business Acquisition [Line Items]
Intangible assets	$ 18
Formulas And Technology [Member]
Business Acquisition [Line Items]
Intangible assets	9
Customer Bases [Member]
Business Acquisition [Line Items]
Intangible assets	$ 9
Estimated economic life, in years	4 years
Minimum [Member] | Formulas And Technology [Member]
Business Acquisition [Line Items]
Estimated economic life, in years	3 years	3 years
Minimum [Member] | Customer Bases [Member]
Business Acquisition [Line Items]
Estimated economic life, in years		4 years
Maximum [Member] | Formulas And Technology [Member]
Business Acquisition [Line Items]
Estimated economic life, in years	6 years	6 years
Maximum [Member] | Customer Bases [Member]
Business Acquisition [Line Items]
Estimated economic life, in years		20 years

Net Sales (Narrative) (Details)

Net Sales (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2018USD ($)
Revenue from Contract with Customer [Abstract]
Customer Advances, Current	$ 0.8	$ 0.8
Recognized Revenue in the Current Period From Funds Collected in Advance from Customers in Earlier Period		3.2
Change in Net Sales Related To Adjustments To Rebates Or Business Development Fund Recognized in Revenue in a Prior Period	0.8	2
Customer Rebates, Current	20.9	20.9
Business Development Fund Accrual	$ 2.1	$ 2.1

Net Sales (Schedule of Net Sale

Net Sales (Schedule of Net Sales by Geographical Area) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 563,166	$ 548,416	$ 1,751,363	$ 1,638,422
United States
Disaggregation of Revenue [Line Items]
Net sales	180,142		547,005
China
Disaggregation of Revenue [Line Items]
Net sales	57,891		183,980
Europe, Middle East, Africa, India [Member]
Disaggregation of Revenue [Line Items]
Net sales	180,850		588,248
Asia Pacfic excl China [Member]
Disaggregation of Revenue [Line Items]
Net sales	87,661		254,350
Other Foreign [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 56,622		$ 177,780

Segment Information (Net Sales

Segment Information (Net Sales By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Information [Line Items]
Net sales	$ 563,166	$ 548,416	$ 1,751,363	$ 1,638,422
Operating Segments [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Net sales	560,522	546,159	1,743,632	1,630,345
Operating Segments [Member] | All Other [Member]
Segment Information [Line Items]
Net sales	2,644	2,257	7,731	8,077
Operating Segments [Member] | Lubricant Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Net sales	462,865	443,355	1,440,227	1,340,693
Operating Segments [Member] | Fuel Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Net sales	$ 97,657	$ 102,804	$ 303,405	$ 289,652

Segment Information (Segment Op

Segment Information (Segment Operating Profit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Information [Line Items]
Segment operating profit	$ 68,148	$ 78,699	$ 216,854	$ 256,010
Corporate, general, and administrative expenses	(37,741)	(43,633)	(120,653)	(123,486)
Interest and financing expenses, net	(7,807)	(5,564)	(18,536)	(16,496)
Other income (expense), net	7,973	3,842	20,872	10,986
Income before income tax expense	68,314	76,977	219,190	250,500
Operating Segments [Member]
Segment Information [Line Items]
Segment operating profit	73,529	85,266	229,528	273,784
Operating Segments [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Segment operating profit	75,824	84,173	231,494	270,841
Operating Segments [Member] | All Other [Member]
Segment Information [Line Items]
Segment operating profit	(2,295)	1,093	(1,966)	2,943
Corporate, Non-Segment [Member]
Segment Information [Line Items]
Corporate, general, and administrative expenses	(5,402)	(6,534)	(16,033)	(17,561)
Other income (expense), net	$ 7,994	$ 3,809	$ 24,231	$ 10,773

Pension Plans and Other Postr_3

Pension Plans and Other Postretirement Benefits (Cash Contributions Made And Expected Remaining Contributions For Pension And Postretirement Benefit Plans) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Pension Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions	$ 55,983
Expected Remaining Cash Contributions	1,328
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions	4,523
Expected Remaining Cash Contributions	1,529
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions	1,354
Expected Remaining Cash Contributions	$ 452

Pension Plans and Other Postr_4

Pension Plans and Other Postretirement Benefits (Net Periodic Benefit Cost (Income) For Pension And Postretirement Benefit Plans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Pension Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,599	$ 3,501	$ 11,543	$ 10,259
Interest cost	3,257	3,248	9,942	9,966
Expected return on plan assets	(7,523)	(6,604)	(22,413)	(19,609)
Amortization of prior service cost (credit)	7	7	20	20
Amortization of actuarial net (gain) loss	1,172	1,085	3,854	3,544
Net periodic benefit cost (income)	512	1,237	2,946	4,180
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,975	1,942	6,114	5,645
Interest cost	1,105	1,076	3,425	3,141
Expected return on plan assets	(2,423)	(2,127)	(7,519)	(6,229)
Amortization of prior service cost (credit)	(20)	(20)	(62)	(58)
Amortization of actuarial net (gain) loss	148	243	456	699
Net periodic benefit cost (income)	785	1,114	2,414	3,198
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	239	208	672	581
Interest cost	355	400	1,094	1,186
Expected return on plan assets	(228)	(281)	(726)	(898)
Amortization of prior service cost (credit)	(757)	(757)	(2,271)	(2,271)
Amortization of actuarial net (gain) loss	0	0	0	0
Net periodic benefit cost (income)	$ (391)	$ (430)	$ (1,231)	$ (1,402)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Anti-dilutive shares of nonvested restricted stock that were excluded from the calculation of diluted earnings per share (in shares)			24,832	23,615
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$ 58,481	$ 59,772	$ 171,931	$ 186,437
Earnings allocated to participating securities	121	118	340	370
Net income attributable to common shareholders after allocation of earnings to participating securities	$ 58,360	$ 59,654	$ 171,591	$ 186,067
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted (in shares)	11,409,000	11,829,000	11,606,000	11,829,000
Earnings per share - basic and diluted (in dollars per share)	$ 5.12	$ 5.04	$ 14.78	$ 15.73

Intangibles (Net of Amortizat_3

Intangibles (Net of Amortization) and Goodwill (Narrative) (Details) - USD ($)	Jul. 03, 2017	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Net carrying amount of intangibles and goodwill		$ 137,533,000	$ 144,337,000
Accumulated goodwill impairment		$ 0	$ 0
Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years		10 years
Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years	4 years
Minimum [Member] | Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years		4 years
Minimum [Member] | Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years	3 years	3 years
Maximum [Member] | Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years		20 years
Maximum [Member] | Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years	6 years	6 years

Intangibles (Net of Amortizat_4

Intangibles (Net of Amortization) and Goodwill (Schedule Of Information Related To Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Accumulated Amortization	$ 11,272	$ 9,833
Goodwill, Gross Carrying Amount	122,965	122,541
Amortizing intangible assets and Goodwill, Gross Carrying Amount	148,805	154,170
Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	9,600	12,339
Amortizing intangible assets, Accumulated Amortization	2,708	3,280
Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	2,000	2,000
Amortizing intangible assets, Accumulated Amortization	350	200
Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	14,240	15,759
Amortizing intangible assets, Accumulated Amortization	8,214	5,140
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	0	1,531
Amortizing intangible assets, Accumulated Amortization	$ 0	$ 1,213

Intangibles (Net of Amortizat_5

Intangibles (Net of Amortization) and Goodwill (Schedule Of Amortization Expense And Estimated Annual Amortization Expense Related To Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 1,470	$ 928	$ 5,944	$ 1,364
2,018	1,467		1,467
2,019	4,207		4,207
2,020	2,907		2,907
2,021	2,156		2,156
2,022	1,423		1,423
2,023	$ 907		$ 907

Long-term Debt (Narrative) (Det

Long-term Debt (Narrative) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Term of credit facility, years	5 years
Revolving credit facility, maturity date	Sep. 22, 2022
Average interest rate during the period	3.00%	2.50%
4.10% Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, interest rate	4.10%
Principal amount of debt	$ 350,000,000
3.78% Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, interest rate	3.78%		3.78%

Long-term Debt (Schedule Of Lon

Long-term Debt (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 818,477	$ 602,900
4.10% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 347,530	347,091
Senior notes, interest rate	4.10%
Debt instruments maturity date	2,022
3.78% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 250,000	250,000
Senior notes, interest rate	3.78%		3.78%
Debt instruments maturity date	2,029
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 215,619	0
Capital Lease Obligation [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 5,328	$ 5,809

Long-term Debt (Schedule Of Unu

Long-term Debt (Schedule Of Unused Portion Of Revolving Credit Facility) (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 818,477,000	$ 602,900,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under the revolving credit facility	850,000,000	850,000,000
Long-term debt	215,619,000	0
Outstanding letters of credit	2,710,000	2,830,000
Unused portion of revolving credit facility	$ 631,671,000	$ 847,170,000

Commitments and Contingencies (

Commitments and Contingencies (Environmental) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Site Contingency [Line Items]
Accruals for environmental remediation, dismantling, and decontamination	$ 14	$ 14
Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member]
Site Contingency [Line Items]
Accruals for environmental remediation, dismantling, and decontamination	8	7
Accruals for environmental remediation, dismantling, and decontamination, undiscounted	11	10
Former TEL Plant Site, Louisiana [Member]
Site Contingency [Line Items]
Accrual for remediation of groundwater and soil	4	3
Houston, Texas Plant Site [Member]
Site Contingency [Line Items]
Accrual for remediation of groundwater and soil	$ 4	$ 4
Minimum [Member] | Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member]
Site Contingency [Line Items]
Discount rate	3.00%	4.00%
Maximum [Member] | Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member]
Site Contingency [Line Items]
Discount rate	9.00%	9.00%

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Schedule of Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Pension Plans and Other Postretirement Benefits, Beginning Balance				$ (63,520)	$ (76,187)
Foreign Currency Translation Adjustments, Beginning Balance				(82,474)	(106,323)
Accumulated Other Comprehensive (Loss) Income, Beginning Balance				(145,994)	(182,510)
Other comprehensive income (loss) before reclassifications, Pension Plans and Other Postretirement Benefits				(163)	(1,335)
Other comprehensive income (loss) before reclassifications, Foreign Currency Translation Adjustments				(3,793)	18,656
Other comprehensive income (loss) before reclassifications, Accumulated Other Comprehensive (Loss) Income				(3,956)	17,321
Amounts reclassified from accumulated other comprehensive loss, Pension Plans and Other Postretirement Benefits	[1]			1,497	1,269
Amounts reclassified from accumulated other comprehensive loss, Foreign Currency Translation Adjustments				0	0
Amounts reclassified from accumulated other comprehensive loss, Accumulated Other Comprehensive (Loss) Income				1,497	1,269
Total pension plans and other postretirement benefits		$ 249	$ (965)	1,334	(66)
Other comprehensive income (loss), Foreign Currency Translation Adjustments		(3,760)	5,642	(3,793)	18,656
Other comprehensive income (loss)		(3,511)	4,677	(2,459)	18,590
Pension Plans and Other Postretirement Benefits, Ending Balance		(62,186)	(76,253)	(62,186)	(76,253)
Foreign Currency Translation Adjustments, Ending Balance		(86,267)	(87,667)	(86,267)	(87,667)
Accumulated Other Comprehensive (Loss) Income, Ending Balance		$ (148,453)	$ (163,920)	$ (148,453)	$ (163,920)
[1]	The pension plan and other postretirement benefit components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 5 in this Quarterly Report on Form 10-Q and Note 17 in our 2017 Annual Report for further information.

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 147,935	$ 84,166	$ 104,996	$ 192,154
4.10% Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes, interest rate	4.10%
Carrying Amount in Consolidated Balance Sheets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 147,935	84,166
Fair Value, Inputs, Level 1 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	$ 147,935	$ 84,166

Fair Value Measurements (Estima

Fair Value Measurements (Estimated Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt (excluding capital lease obligations)	$ 813,149	$ 597,091
Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term debt (excluding capital lease obligations), Fair Value	$ 803,977	$ 623,557

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	Jan. 01, 2018	Sep. 30, 2018
Income Tax Disclosure [Abstract]
US Corporate Tax Rate	21.00%
Tax benefit attributable to reduction of deferred tax liability		$ (6)

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Narrative) (Details) - Accounting Standards Update 2017-07 [Member] $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement Effect, Decrease of Operating Profit	$ (11)
New Accounting Pronouncement Effect, Increase on Other Income (Expense)	$ 11