10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission File Number 1-32190

NEWMARKET CORPORATION

(Exact name of registrant as specified in its charter)

VIRGINIA	20-0812170
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
330 SOUTH FOURTH STREET RICHMOND, VIRGINIA	23219-4350
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code - (804) 788-5000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x		Accelerated filer	¨
Non-accelerated filer	¨	(Do not check if a smaller reporting company)	Smaller reporting company	¨
			Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes  ¨ No  x

Number of shares of common stock, without par value, outstanding as of March 31, 2018: 11,787,054

NEWMARKET CORPORATION

INDEX

	Page Number
PART I. FINANCIAL INFORMATION
ITEM 1. Financial Statements (unaudited)
Consolidated Statements of Income - Three Months Ended March 31, 2018 and March 31, 2017	4
Consolidated Statements of Comprehensive Income - Three Months Ended March 31, 2018 and March 31, 2017	5
Condensed Consolidated Balance Sheets - March 31, 2018 and December 31, 2017	6
Consolidated Statements of Shareholders’ Equity - Three Months Ended March 31, 2018 and March 31, 2017	7
Condensed Consolidated Statements of Cash Flows - Three Months Ended March 31, 2018 and March 31, 2017	8
Notes to Condensed Consolidated Financial Statements	9
Financial Statement Presentation	9
Acquisition of Business	9
Net Sales	10
Segment Information	11
Pension Plans and Other Postretirement Benefits	13
Earnings Per Share	14
Intangibles (Net of Amortization) and Goodwill	14
Long-term Debt	15
Commitments and Contingencies	15
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	17
Fair Value Measurements	17
Income Taxes	17
Recent Accounting Pronouncements	18
ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	19
ITEM 3. Quantitative and Qualitative Disclosures About Market Risk	25
ITEM 4. Controls and Procedures	25
PART II. OTHER INFORMATION
ITEM 1. Legal Proceedings	26
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds	26
ITEM 6. Exhibits	27
SIGNATURES	28

3

PART I.        FINANCIAL INFORMATION

ITEM 1.     Financial Statements

NEWMARKET CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(in thousands, except per-share amounts)	Three Months Ended March 31
	2018		2017
Net sales	$	589,245	$	542,818
Cost of goods sold	432,462		374,007
Gross profit	156,783		168,811
Selling, general, and administrative expenses	40,913		40,449
Research, development, and testing expenses	34,295		38,130
Operating profit	81,575		90,232
Interest and financing expenses, net	5,164		5,572
Other income (expense), net	4,900		3,573
Income before income tax expense	81,311		88,233
Income tax expense	20,746		24,296
Net income	$	60,565	$	63,937
Earnings per share - basic and diluted	$	5.14	$	5.39
Cash dividends declared per share	$	1.75	$	1.75

See accompanying Notes to Condensed Consolidated Financial Statements

4

NEWMARKET CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(in thousands)	Three Months Ended March 31
	2018			2017
Net income	$	60,565		$	63,937
Other comprehensive income (loss):
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 2018 and $(296) in 2017	(591		)	(474		)
Amortization of actuarial net loss (gain) included in net periodic benefit cost, net of income tax expense (benefit) of $360 in 2018 and $509 in 2017	1,136			783
Total pension plans and other postretirement benefits	545			309
Foreign currency translation adjustments, net of income tax expense (benefit) of $(40) in 2018 and $280 in 2017	12,758			3,642
Other comprehensive income (loss)	13,303			3,951
Comprehensive income	$	73,868		$	67,888

See accompanying Notes to Condensed Consolidated Financial Statements

5

NEWMARKET CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share amounts)	March 31, 2018			December 31, 2017
ASSETS
Current assets:
Cash and cash equivalents	$	72,830		$	84,166
Trade and other accounts receivable, less allowance for doubtful accounts	378,442			335,317
Inventories
Finished goods and work-in-process	328,782			319,036
Raw materials	61,229			51,485
Stores, supplies, and other	12,806			12,576
Total inventories	402,817			383,097
Prepaid expenses and other current assets	32,401			31,074
Total current assets	886,490			833,654
Property, plant, and equipment, at cost	1,502,591			1,474,962
Less accumulated depreciation and amortization	840,122			822,681
Net property, plant, and equipment	662,469			652,281
Intangibles (net of amortization) and goodwill	142,137			144,337
Prepaid pension cost	73,241			66,495
Deferred income taxes	4,316			4,349
Deferred charges and other assets	10,812			11,038
Total assets	$	1,779,465		$	1,712,154
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	162,651		$	159,408
Accrued expenses	91,457			107,999
Dividends payable	18,997			19,055
Income taxes payable	17,207			16,340
Other current liabilities	12,715			13,991
Total current liabilities	303,027			316,793
Long-term debt	624,894			602,900
Other noncurrent liabilities	196,759			190,812
Total liabilities	1,124,680			1,110,505
Commitments and contingencies (Note 9)
Shareholders’ equity:
Common stock and paid-in capital (without par value; authorized shares - 80,000,000; issued and outstanding shares - 11,787,054 at March 31, 2018 and 11,779,978 at December 31, 2017)	36			0
Accumulated other comprehensive loss	(132,691		)	(145,994		)
Retained earnings	787,440			747,643
Total shareholders' equity	654,785			601,649
Total liabilities and shareholders’ equity	$	1,779,465		$	1,712,154

See accompanying Notes to Condensed Consolidated Financial Statements

6

NEWMARKET CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Unaudited)

(in thousands, except share and per-share amounts)	Common Stock and Paid-in Capital					Accumulated Other Comprehensive Loss			Retained Earnings			Total Shareholders’ Equity
	Shares		Amount
Balance at December 31, 2016	11,845,972		$	1,603		$	(182,510	)	$	664,158		$	483,251
Net income									63,937			63,937
Other comprehensive income (loss)						3,951						3,951
Cash dividends ($1.75 per share)									(20,741		)	(20,741		)
Stock-based compensation	6,645		617									617
Balance at March 31, 2017	11,852,617		$	2,220		$	(178,559	)	$	707,354		$	531,015
Balance at December 31, 2017	11,779,978		$	0		$	(145,994	)	$	747,643		$	601,649
Net income									60,565			60,565
Other comprehensive income (loss)						13,303						13,303
Cash dividends ($1.75 per share)									(20,629		)	(20,629		)
Repurchases of common stock	(1,600	)	(489		)				(143		)	(632		)
Stock-based compensation	8,676		525						4			529
Balance at March 31, 2018	11,787,054		$	36		$	(132,691	)	$	787,440		$	654,785

See accompanying Notes to Condensed Consolidated Financial Statements

7

NEWMARKET CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)	Three Months Ended March 31
	2018			2017
Cash and cash equivalents at beginning of year	$	84,166		$	192,154
Cash flows from operating activities:
Net income	60,565			63,937
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	17,665			12,306
Noncash pension and postretirement expense	1,618			2,007
Deferred income tax expense	2,714			5,283
Working capital changes	(63,655		)	(39,836		)
Cash pension and postretirement contributions	(6,713		)	(6,326		)
Other, net	(2,154		)	(3,163		)
Cash provided from (used in) operating activities	10,040			34,208
Cash flows from investing activities:
Capital expenditures	(22,797		)	(46,346		)
Other, net	0			(2,000		)
Cash provided from (used in) investing activities	(22,797		)	(48,346		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	22,000			(156,000		)
Issuance of 3.78% senior notes	0			250,000
Dividends paid	(20,629		)	(20,741		)
Repurchases of common stock	(632		)	0
Other, net	(98		)	(1,447		)
Cash provided from (used in) financing activities	641			71,812
Effect of foreign exchange on cash and cash equivalents	780			1,416
(Decrease) increase in cash and cash equivalents	(11,336		)	59,090
Cash and cash equivalents at end of period	$	72,830		$	251,244

See accompanying Notes to Condensed Consolidated Financial Statements

8

NEWMARKET CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1.    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 March 31, 2018 and December 31, 2017, and our consolidated results of operations and comprehensive income, changes in shareholders' equity, and cash flows for the three months ended March 31, 2018 and March 31, 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 three month period ended March 31, 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.

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.

2.    Acquisition of Business

On July 3, 2017, Afton Chemical de Mexico, S.A. de C.V., an indirect, wholly-owned subsidiary of NewMarket Corporation, 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 have initiated 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 amounts recorded for certain assets and liabilities are preliminary and are subject to adjustment if additional information is obtained about facts that existed as of the acquisition date. The final determination of the fair values of certain assets and liabilities will be completed within the measurement period of up to one year from the acquisition date.

A preliminary 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

9

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.

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, as well as the sale in North America of tetraethyl lead (TEL). We sell petroleum additives products across the world including to customers located in the United States, Europe, Asia Pacific, 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 $7.9 million at March 31, 2018 and $3.3 million at December 31, 2017. Revenue of $3.2 million was recognized in 2018 from funds collected in advance from customers in an earlier period.

We recognize revenue when control of the product is transferred to our customer and for an amount that reflects the consideration that 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 and TEL 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.

10

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. For the first quarter of 2018, we recognized an increase to net sales of $1.0 million related to adjustments to rebates or business development funds which were recognized in revenue in a prior period. At March 31, 2018, accrued rebates were $11.3 million and accrued business development funds were $1.5 million.

The following table provides information on our net sales by geographic area. Information on net sales by segment is in Note 4.

	Three Months Ended March 31
(in thousands)	2018
Net sales
United States	$	181,638
China	64,211
Europe, Middle East, Africa, India	198,660
Asia Pacific, except China	82,506
Other foreign	62,230
Net sales	$	589,245

4. 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). The results of AMSA's operations are reflected in the petroleum additives segment. See Note 2 for further information on AMSA.

Net Sales by Segment

	Three Months Ended March 31
(in thousands)	2018		2017
Petroleum additives
Lubricant additives	$	485,049	$	443,961
Fuel additives	101,859		96,072
Total	586,908		540,033
All other	2,337		2,785
Net sales	$	589,245	$	542,818

11

Segment Operating Profit

	Three Months Ended March 31
(in thousands)	2018			2017
Petroleum additives	$	84,140		$	95,413
All other	(77		)	1,035
Segment operating profit	84,063			96,448
Corporate, general, and administrative expenses	(5,664		)	(6,346		)
Interest and financing expenses, net	(5,164		)	(5,572		)
Other income (expense), net	8,076			3,703
Income before income tax expense	$	81,311		$	88,233

12

5.    Pension Plans and Other Postretirement Benefits

The table below shows cash contributions made during the three months ended March 31, 2018, as well as the remaining cash contributions we expect to make during the year endingDecember 31, 2018, for our domestic and foreign pension plans and domestic postretirement benefit plan.

(in thousands)	Actual Cash Contributions for Three Months Ended March 31, 2018		Expected Remaining Cash Contributions for Year Ending December 31, 2018
Domestic plans
Pension benefits	$	4,818	$	14,455
Postretirement benefits	423		1,270
Foreign plans
Pension benefits	1,472		4,472

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
	Three Months Ended March 31,
(in thousands)	2018			2017			2018			2017
Service cost	$	3,972		$	3,379		$	216		$	186
Interest cost	3,343			3,360			370			394
Expected return on plan assets	(7,445		)	(6,503		)	(249		)	(309		)
Amortization of prior service cost (credit)	7			7			(757		)	(757		)
Amortization of actuarial net (gain) loss	1,341			1,229			0			0
Net periodic benefit cost (income)	$	1,218		$	1,472		$	(420	)	$	(486	)

	Foreign
	Pension Benefits
	Three Months Ended March 31,
(in thousands)	2018			2017
Service cost	$	2,079		$	1,821
Interest cost	1,164			1,018
Expected return on plan assets	(2,557		)	(2,024		)
Amortization of prior service cost (credit)	(21		)	(19		)
Amortization of actuarial net (gain) loss	155			225
Net periodic benefit cost (income)	$	820		$	1,021

13

6.    Earnings Per Share

We had 25,384 shares of nonvested restricted stock at March 31, 2018 and 23,775 shares of nonvested restricted stock at March 31, 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.

	Three Months Ended March 31
(in thousands, except per-share amounts)	2018		2017
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$	60,565	$	63,937
Earnings allocated to participating securities	103		127
Net income attributable to common shareholders after allocation of earnings to participating securities	$	60,462	$	63,810
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted	11,762		11,829
Earnings per share - basic and diluted	$	5.14	$	5.39

7.    Intangibles (Net of Amortization) and Goodwill

The net carrying amount of intangibles and goodwill was $142 million at March 31, 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.

	March 31, 2018				December 31, 2017
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizing intangible assets
Formulas and technology	$	12,365	$	3,887	$	12,339	$	3,280
Contract	2,000		250		2,000		200
Customer bases	15,766		7,352		15,759		5,140
Trademarks and trade names	1,537		1,250		1,531		1,213
Goodwill	123,208				122,541
	$	154,876	$	12,739	$	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 March 31, 2018 is due to an immaterial purchase adjustment to goodwill related to AMSA and foreign currency fluctuation. The goodwill and identifiable intangibles from the acquisition of AMSA are preliminary and are subject to adjustment if additional information is obtained about facts that existed as of the acquisition date. The final determination of the fair values will be completed within the measurement period of up to one year from the acquisition date. See Note 2 for more information. There is no accumulated goodwill impairment.

Amortization expense was (in thousands):

Three months ended March 31, 2018	$	2,906
Three months ended March 31, 2017	218

14

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	$	4,760
2019	4,675
2020	3,026
2021	2,206
2022	1,473
2023	957

We amortize contracts over 10 years; customer bases over 4 to 20 years; formulas and technology over 3 to 10 years; and trademarks and trade names over 10 years.

8.    Long-term Debt

(in thousands)	March 31, 2018		December 31, 2017
Senior notes - 4.10% due 2022 (net of related deferred financing costs)	$	347,238	$	347,091
Senior notes - 3.78% due 2029	250,000		250,000
Revolving credit facility	22,000		0
Capital lease obligations	5,656		5,809
	$	624,894	$	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 the senior notes as of March 31, 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 3.2% during the first three months of 2018 and 2.5% during the full year of 2017. We were in compliance with all covenants under the senior notes as of March 31, 2018 and December 31, 2017.

The following table provides information related to the unused portion of our revolving credit facility:

(in thousands)	March 31, 2018		December 31, 2017
Maximum borrowing capacity under the revolving credit facility	$	850,000	$	850,000
Outstanding borrowings under the revolving credit facility	22,000		0
Outstanding letters of credit	2,710		2,830
Unused portion of revolving credit facility	$	825,290	$	847,170

The capital lease obligations are related to the Singapore manufacturing facility.

9.    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.

15

In late 2013, Afton Chemical Corporation (Afton) initiated a voluntary self-audit of its compliance with certain sections of the Toxic Substances Control Act (TSCA) under the Environmental Protection Agency's (EPA) audit policy (Audit Policy). If any potential TSCA violations are discovered during the audit, we would voluntarily disclose them to the EPA under the Audit Policy. In August 2014, the EPA staff began its own TSCA inspection of both Afton and Ethyl. While it is not possible to predict or determine with certainty the outcome, we do not believe that any findings identified as a result of our 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 $13 million at March 31, 2018 and $14 million at 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 $7 million of the total accrual above at both March 31, 2018 and December 31, 2017, using discount rates ranging from 4% to 9% for both periods. The aggregate undiscounted amount for these sites was $9 million at March 31, 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 $3 million at both March 31, 2018 and December 31, 2017. The amount related to remediation of groundwater and soil for the Texas site was $4 million at both March 31, 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 March 31, 2018. The amount accrued for this site is not material.

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10.    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	0			3,642			3,642
Amounts reclassified from accumulated other comprehensive loss (a)	309			0			309
Other comprehensive income (loss)	309			3,642			3,951
Balance at March 31, 2017	$	(75,878	)	$	(102,681	)	$	(178,559	)
Balance at December 31, 2017	$	(63,520	)	$	(82,474	)	$	(145,994	)
Other comprehensive income (loss) before reclassifications	0			12,758			12,758
Amounts reclassified from accumulated other comprehensive loss (a)	545			0			545
Other comprehensive income (loss)	545			12,758			13,303
Balance at March 31, 2018	$	(62,975	)	$	(69,716	)	$	(132,691	)

(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 Form 10-Q and Note 17 in our 2017 Annual Report for further information.

11.    Fair Value Measurements

The carrying amount of cash and cash equivalents in the Condensed Consolidated Balance Sheets, as well as the fair value, was $73 million at March 31, 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 three months ended March 31, 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 also based on the last quoted price closest to March 31, 2018. The fair value of our debt instruments is categorized as Level 2.

	March 31, 2018				December 31, 2017
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt (excluding capital lease obligation)	$	619,238	$	625,235	$	597,091	$	623,557

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 March 31, 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 December 31, 2017 and March 31, 2018, 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 first three months of 2018, we made immaterial adjustments to the calculations recorded as of December 31, 2017.

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We are evaluating certain aspects of the Tax Reform Act which could 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 period the decision is made.

13.    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 three months ended March 31, 2017, operating profit decreased by $3 million and other income (expense), net increased by $3 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 is currently required for the adoption of ASU 2016-02, which is effective for our reporting period beginning January 1, 2019. Early adoption is permitted. We are currently assessing the impact that the adoption of ASU 2016-02 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.

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ITEM 2.    Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Statements

This report contains forward-looking statements about future events and expectations within the meaning of the Private Securities Litigation Reform Act of 1995. We have based these forward-looking statements on our current expectations and projections about future results. When we use words in this document such as “anticipates,” “intends,” “plans,” “believes,” “estimates,” “projects,” “expects,” “should,” “could,” “may,” “will,” and similar expressions, we do so to identify forward-looking statements. Examples of forward-looking statements include, but are not limited to, statements we make regarding future prospects of growth in the petroleum additives market, other trends in the petroleum additives market, our ability to maintain or increase our market share, and our future capital expenditure levels.

We believe our forward-looking statements are based on reasonable expectations and assumptions, within the bounds of what we know about our business and operations. However, we offer no assurance that actual results will not differ materially from our expectations due to uncertainties and factors that are difficult to predict and beyond our control.

Factors that could cause actual results to differ materially from expectations include, but are not limited to, the availability of raw materials and distribution systems; disruptions at manufacturing facilities, including single-sourced facilities; the ability to respond effectively to technological changes in our industry; failure to protect our intellectual property rights; failure to attract and retain a highly-qualified workforce; hazards common to chemical businesses; competition from other manufacturers; sudden or sharp raw material price increases; the gain or loss of significant customers; the occurrence or threat of extraordinary events, including natural disasters and terrorist attacks; risks related to operating outside of the United States; the impact of fluctuations in foreign exchange rates; an information technology system failure or security breach; political, economic, and regulatory factors concerning our products; current and future governmental regulations; resolution of environmental liabilities or legal proceedings; our inability to realize expected benefits from investment in our infrastructure or from recent or future acquisitions, or our inability to successfully integrate recent or future acquisitions into our business; and other factors detailed from time to time in the reports that NewMarket files with the SEC, including the risk factors in Item 1A. “Risk Factors” of our 2017 Annual Report, which is available to shareholders upon request.

You should keep in mind that any forward-looking statement made by us in this report or elsewhere speaks only as of the date on which we make it. New risks and uncertainties arise from time to time, and it is impossible for us to predict these events or how they may affect us. We have no duty to, and do not intend to, update or revise the forward-looking statements in this discussion after the date hereof, except as may be required by law. In light of these risks and uncertainties, any forward-looking statement made in this report or elsewhere, might not occur.

Overview

When comparing the results of the petroleum additives segment for the first three months of 2018 with the first three months of 2017, net sales increased 8.7% primarily due to higher selling prices and a favorable foreign currency impact along with a favorable impact from certain product shipments and product mix. Petroleum additives operating profit was 11.8% lower when comparing the first three months of 2018 with the first three months of 2017, reflecting continuing unfavorable impacts from increasing raw material costs.

Our operations generate cash that is in excess of the needs of the business. We continue to invest in and manage the business for the long-term with the goal of helping our customers succeed in their marketplaces. Our investments continue to be in organizational talent, technology development and processes, and global infrastructure, consisting of technical centers, production capability, and geographic expansion.

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Results of Operations

Net Sales

Consolidated net sales for the first three months of 2018 were $589.2 million which was an increase of 8.6% from the first three months of 2017 of $542.8 million. The following table shows net sales by segment and product line.

	Three Months Ended March 31
(in millions)	2018		2017
Petroleum additives
Lubricant additives	$	485.0	$	443.9
Fuel additives	101.9		96.1
Total	586.9		540.0
All other	2.3		2.8
Net sales	$	589.2	$	542.8

Petroleum Additives Segment

The regions in which we operate include North America (the United States and Canada), Latin America (Mexico, Central America, and South America), Asia Pacific, and the Europe/Middle East/Africa/India (EMEAI) region. While there is some fluctuation, the percentage of net sales generated in the regions remained fairly consistent when comparing the first three months of 2018 with the same period in 2017, as well as with the full year in 2017.

Petroleum additives net sales for the first three months of 2018 were $586.9 million compared to $540.0 million for the first three months of 2017, an increase of 8.7%. The increase in net sales was across all regions with almost half of the increase from the EMEAI region, with the other regions contributing about equal amounts of the remaining increase.

The following table details the approximate components of the increase in petroleum additives net sales between the first three months of 2018 and 2017.

(in millions)	Three Months
Period ended March 31, 2017	$	540.0
Lubricant additives shipments	18.9
Fuel additives shipments	3.3
Selling prices	8.5
Foreign currency impact, net	16.2
Period ended March 31, 2018	$	586.9

When comparing the first three months of both 2018 and 2017, petroleum additives selling prices, along with a foreign currency impact, contributed $24.7 million of the increase in net sales. The United States Dollar weakened against the major currencies in which we transact, resulting in a favorable impact to net sales. The favorable impact was predominantly from the European Euro. The remaining increase in net sales substantially resulted from a volume shipment impact.

On a worldwide basis, the volume of product shipments for petroleum additives improved slightly when comparing the first three months of 2018 with the first three months of 2017, but there was a significant impact on net sales from product and regional mix. Shipments of lubricant additives increased during the comparison period with shipments of fuel additives decreasing during the period.

The increase in lubricant additives was across all regions except North America, with most of the increase in Latin America and Asia Pacific.

While worldwide fuel additives shipments decreased when comparing the first three months of 2018 with the first three months of 2017, the Latin America region experienced an increase. The EMEAI region experienced a substantial decrease in fuel additives product shipments that was mainly driven by a reduction in sales of a lower priced product. The Asia Pacific region experienced a reduction in fuel additives shipments when comparing the first three months of 2018 with the first three months of 2017. North America fuel additives shipments were substantially unchanged.

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All Other

The “All other” category includes the operations of the TEL business and certain contracted manufacturing and services associated with Ethyl.

Segment Operating Profit

NewMarket evaluates the performance of the petroleum additives business based on segment operating profit. NewMarket Services Corporation expenses are charged to NewMarket and each subsidiary pursuant to services agreements between the companies. Depreciation on segment property, plant, and equipment, as well as amortization of segment intangible assets, is included in segment operating profit.

The following table reports segment operating profit for the three months ended March 31, 2018 and March 31, 2017.

	Three Months Ended March 31
(in millions)	2018		2017
Petroleum additives	$	84.1	$	95.4
All other	$	0.0	$	1.0

Petroleum Additives Segment

The petroleum additives segment operating profit decreased $11.3 million when comparing the first three months of 2018 to the first three months of 2017. The 2017 period reflects the retroactive restatement of petroleum additives operating profit due to the adoption of ASU 2017-07. See Note 13 for further information. Both comparative periods included the impact of the same factors that affected gross profit (see discussion below) including a favorable currency impact when comparing the first three months of 2018 with the first three months of 2017.

The operating profit margin was 14.3% for the first three months of 2018 as compared to 17.7% for the first three months of 2017. For the rolling four quarters ended March 31, 2018, the operating profit margin for petroleum additives was 14.9%. Increases in raw material costs have continued to put downward pressure on margins, and our actions with regard to pricing have not kept pace. While operating profit margins will fluctuate from quarter to quarter due to multiple factors, we believe the fundamentals of our business and industry as a whole are unchanged.

Petroleum additives gross profit decreased $11.6 million when comparing the first three months periods of 2018 and 2017. Cost of goods sold as a percentage of net sales was 73.9% for the first three months of 2018, up from 69.5% for the first three months of 2017.

When comparing the first three month periods of 2018 and 2017, the decrease in gross profit resulted predominantly from unfavorable raw material costs and conversion costs, which together contributed over 100% of the change. These unfavorable factors were partially offset by a favorable impact from selling prices (including the impact from foreign currency), as well as a favorable impact from product shipments (as discussed in the Net Sales section above).

Petroleum additives selling, general, and administrative expenses (SG&A) for the first three months of 2018 were $1.3 million, or 3.8%, higher as compared to the first three months of 2017. SG&A as a percentage of net sales was 5.9% for the first three months of 2018 and 6.2% for the first three months of 2017. Our SG&A costs are primarily personnel-related and include salaries, benefits, and other costs associated with our workforce. There were no significant changes in the drivers of these costs when comparing the periods.

Our investment in petroleum additives research, development, and testing (R&D) decreased $3.8 million in the first three months of 2018 from the first three months of 2017. The decrease was primarily in the lubricant additives product lines offset by a small increase in fuel additives product lines. As a percentage of net sales, R&D was 5.8% for the first three months of 2018, and 7.0% for the first three months of 2017. Our R&D investments reflect our efforts to support the development of solutions that meet our customers' needs, meet new and evolving standards, and support our expansion into new product areas. Our approach to R&D investment, as it is with SG&A, is one of purposeful spending on programs to support our current product base and to ensure that we develop products to support our customers' programs in the future. R&D investments include personnel-related costs, as well as internal and external testing of our products.

The following discussion references certain captions on the Consolidated Statements of Income.

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Interest and Financing Expenses

Interest and financing expenses were $5.2 million for the first three months of 2018 and $5.6 million for the first three months of 2017. Higher average debt resulted in increased interest expense, which was more than offset by the benefit of higher capitalized interest for the first three months of 2018 as compared to the first three months of 2017.

Other Income (Expense), Net

Other income (expense), net was income of $4.9 million for the first three months of 2018 and income of $3.6 million for the first three months of 2017. The amounts for both periods primarily reflect the components of net periodic benefit cost (income), except for service cost. See Note 5 for further information on total periodic benefit cost (income).

Income Tax Expense

Income tax expense was $20.7 million for the first three months of 2018 and $24.3 million for the first three months of 2017. The effective tax rate was 25.5% for the first three months of 2018 and 27.5% for the first three months of 2017. Income tax expense decreased $1.7 million due to the lower effective tax rate, with the remaining $1.9 million of the change due to lower income before income tax expense.

The primary reason for the decrease in the effective tax rate for the first three months of 2018 is the enactment of the U.S. tax reform legislation in December 2017, which reduced the U.S. federal tax rate to 21% effective January 1, 2018. The effective tax rates for both the 2018 and 2017 periods included the benefit of income in foreign jurisdictions with lower tax rates than the United States. The effective tax rate for the three months of 2017 included the benefit of the U.S. domestic production deduction, which was repealed with the U.S. tax reform legislation.

Cash Flows, Financial Condition, and Liquidity

Cash and cash equivalents at March 31, 2018 were $72.8 million, which was a decrease of $11.3 million since December 31, 2017.

Cash and cash equivalents held by our foreign subsidiaries amounted to $71.5 million at March 31, 2018 and $76.6 million at December 31, 2017. A significant amount, but not all, of these foreign cash balances are associated with earnings that we have asserted are indefinitely reinvested. We plan to use these indefinitely reinvested earnings to support growth outside of the United States through funding of operating expenses, capital expenditures, and other cash needs of our foreign subsidiaries.

Periodically, we repatriate cash from our foreign subsidiaries to the United States through intercompany dividends. These intercompany dividends are paid only by subsidiaries whose earnings we have not asserted are indefinitely reinvested or whose earnings qualify as previously taxed income, as defined by the United States Internal Revenue Code. Under the United States Tax Reform Act enacted in 2017, previously deferred foreign earnings were subjected to U.S. tax in 2017. Future earnings will not be subject to U.S. federal tax. As a result of this new legislation, we are continuing to evaluate our permanent investment assertions, but we do not anticipate significant U.S. or foreign tax consequences of future distributions of foreign earnings. As final determinations are made, any required adjustment will be recorded to income tax expense or benefit in the period that the determination is made. If circumstances were to change that would cause these indefinitely reinvested earnings to be repatriated, an incremental U.S. tax liability would be incurred. As part of our foreign subsidiary repatriation activities, we received cash dividends from our foreign subsidiaries of $4.7 million for the first three months of 2018. The amount of cash that we repatriate from foreign subsidiaries in any given year is dependent upon many factors including utilization of available cash in the foreign locations for working capital, capital investments, and other needs.

We expect that cash from operations, together with borrowing available under our revolving credit facility, will continue to be sufficient to cover our operating needs and planned capital expenditures for at least the next twelve months.

Cash Flows – Operating Activities

Cash flows provided from operating activities for the first three months of 2018 were $10.0 million, which included the use of $63.7 million to fund higher working capital requirements. The $63.7 million excluded a favorable foreign currency impact to the components of working capital on the balance sheet.

Other than the decrease in cash and cash equivalents, the most significant changes in working capital resulted from an increase in accounts receivable and inventories, as well as a decrease in accrued expenses. The higher accounts receivable balance was primarily due to higher sales levels in all regions when comparing the first quarter of 2018 with the fourth quarter of 2017. The increase in inventory was primarily in the North America and Asia Pacific regions. The increase resulted from higher raw material costs and higher quantities on hand to support planned plant turnarounds for maintenance, as well as the operations at our new Singapore plant. The decrease in accrued expenses reflected normal payments for customer and personnel related costs.

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Including cash and cash equivalents, as well as the impact of foreign currency on the balance sheet, we had total working capital of $583.5 million at March 31, 2018 and $516.9 million at December 31, 2017. The current ratio was 2.93 to 1 at March 31, 2018 and 2.63 to 1 at December 31, 2017.

Cash Flows – Investing Activities

Cash used in investing activities totaled $22.8 million during the first three months of 2018 and related to capital expenditures. We currently expect that our total capital spending during 2018 will be in the $100 million to $120 million range and will include several improvements to our manufacturing and R&D infrastructure around the world. We expect to continue to finance capital spending through cash on hand and cash provided from operations, together with borrowing available under our $850 million revolving credit facility.

Cash Flows – Financing Activities

Cash provided from financing activities during the first three months of 2018 amounted to $0.6 million. We paid dividends of $20.6 million. Our long-term debt was $624.9 million at March 31, 2018, increasing $22.0 million since December 31, 2017 reflecting net borrowings under our revolving credit facility.

Debt

At March 31, 2018, our debt included senior notes in the amount of $350 million, senior notes in the amount of $250 million, and borrowings under our revolving credit agreement.

The $350 million senior notes bear interest at a fixed rate of 4.10% and are due in 2022. These senior notes are registered under the Securities Act.

The $250 million senior notes are unsecured notes from a private placement with The Prudential Insurance Company of America and certain other purchasers. These notes bear interest at 3.78% and mature on January 4, 2029. Interest is payable semiannually and principal payments of $50 million are payable annually beginning on January 4, 2025. We have the right to make optional prepayments on the notes at any time, subject to certain limitations.

The revolving credit agreement provides for an $850 million, multicurrency revolving credit facility, with a $150 million sublimit for multicurrency borrowings, a $75 million sublimit for letters of credit, and a $20 million sublimit for swingline loans. The revolving credit agreement includes an expansion feature which allows us, subject to certain conditions, to request an increase in the aggregate amount of the revolving credit facility or obtain incremental term loans in an amount up to $425 million. In addition, certain of our foreign subsidiaries are allowed to borrow under the agreement. The obligations under the revolving credit facility are unsecured and are fully and unconditionally guaranteed by NewMarket. The revolving credit facility matures on September 22, 2022.

The unused portion of the revolving credit facility was $825.3 million at March 31, 2018 and $847.2 million at December 31, 2017. See Note 8 for additional information.

The 4.10% senior notes, 3.78% senior notes, and the revolving credit facility contain covenants, representations, and events of default that management considers typical of credit arrangements of this nature. The covenants under the 3.78% senior notes include negative covenants, certain financial covenants, and events of default which are substantially similar to the covenants and events of default in our revolving credit facility.

The more restrictive and significant financial covenants under the revolving credit facility include:

•A consolidated Leverage Ratio (as defined in the agreement) of no more than 3.50 to 1.00, except during an Increased Leverage Period (as defined in the agreement) at the end of each fiscal quarter; and

•A consolidated Interest Coverage Ratio (as defined in the agreement) of no less than 3.00 to 1.00, calculated on a rolling four quarter basis, as of the end of each quarter.

At March 31, 2018, the Leverage Ratio was 1.60 and the Interest Coverage Ratio was 15.46 under the revolving credit facility. We were in compliance with all covenants under the 4.10% senior notes, the 3.78% senior notes, and the revolving credit facility at March 31, 2018 and December 31, 2017.

As a percentage of total capitalization (total long-term debt and shareholders’ equity), our total long-term debt percentage decreased from 50.1% at December 31, 2017 to 48.8% at March 31, 2018. The change in the percentage was primarily the result of the increase in shareholders' equity partially offset by the increase in long-term debt. The change in shareholders’ equity reflects our earnings and impact of foreign currency translation adjustments offset by the impact of dividend payments and stock repurchases. Generally, we repay any outstanding long-term debt with cash from operations or refinancing activities.

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Critical Accounting Policies and Estimates

This Form 10-Q and our 2017 Annual Report include discussions of our accounting policies, as well as methods and estimates used in the preparation of our financial statements. We also provided a discussion of Critical Accounting Policies and Estimates in our 2017 Annual Report.

There have been no significant changes in our critical accounting policies and estimates from those reported in our 2017 Annual Report.

Recent Accounting Pronouncements

For a full discussion of the significant recent accounting pronouncements which may impact our financial statements, see Note 13.

Outlook

Our stated goal is to provide a 10% compounded return per year for our shareholders over any five year period (defined by earnings per share growth plus dividends), although we may not necessarily achieve a 10% return each year. We continue to have confidence in our customer-focused strategy and approach to the market.

We are committed to providing long-term value for our shareholders and customers, and we remain focused on our long-term objectives. This is evidenced by our technology-driven initiatives and ongoing investments in our supply capability, such as our new investments in Singapore and Mexico. We believe the fundamentals of how we run our business - a long-term view, safety-first culture, customer-focused solutions, technology-driven product offerings, and world-class supply chain capability - will continue to be beneficial for all of our stakeholders.

Throughout the rest of 2018, we expect to see solid results in our petroleum additives business. We expect that the petroleum additives industry shipment demand will grow at an average annual rate of 1% to 2% over the long-term, as there have been no significant changes in the positive fundamentals of the industry. Over the long-term, we plan to exceed the industry growth rate.

Margin improvement will remain our top priority throughout the remainder of this year, as we are committed to reversing the effects of the margin compression we have seen over the past several quarters, primarily due to rising raw material costs. This will remain a priority until we begin to see raw material prices stabilize.

We have made significant investments to expand our capabilities around the world over the last few years, which are continuing in 2018. These investments have been and will continue to be in organizational talent, technology development and processes, and global infrastructure, consisting of technical centers, production capability, and geographic expansion. We intend to utilize these investments to improve our ability to deliver the solutions that our customers value, expand our global reach and enhance our operating results. We will continue to invest in our capabilities to provide even better value, service, technology, and customer solutions.

Our business generates significant amounts of cash beyond what is necessary for the expansion and growth of our current offerings. We are making investments to position ourselves for the future. We regularly review our many internal opportunities to utilize excess cash from a technological, geographic, and product line perspective. We believe our capital spending is creating the capability we need to grow and support our customers worldwide, and our research and development investments are positioning us well to provide added value to our customers. Our primary focus in the acquisition area remains on the petroleum additives industry. It is our view that this industry segment will provide the greatest opportunity for solid returns on our investments while minimizing risk. We remain focused on this strategy and will evaluate any future opportunities. We will continue to evaluate all alternative uses of cash to enhance shareholder value, including stock repurchases and dividends.

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ITEM 3.     Quantitative and Qualitative Disclosures About Market Risk

At March 31, 2018, there were no material changes in our market risk from the information provided in the 2017 Annual Report.

ITEM 4.     Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain a system of internal control over financial reporting to provide reasonable, but not absolute, assurance of the reliability of the financial records and the protection of assets.

Pursuant to Rule 13a-15(b) under the Securities Exchange Act of 1934 (the Exchange Act), we carried out an evaluation, with the participation of our management, including our principal executive officer and our principal financial officer, of the effectiveness of our disclosure controls and procedures, as such term is defined in Rule 13a-15(e) under the Exchange Act, as of the end of the period covered by this report. Based upon that evaluation, our principal executive officer and our principal financial officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level.

There has been no change in our internal control over financial reporting, as such term is defined in Rule 13a-15(f) under the Exchange Act, that occurred during the quarter ended March 31, 2018 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II.     OTHER INFORMATION

ITEM 1.     Legal Proceedings

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” in Note 9.

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 initiated a voluntary self-audit of its compliance with certain sections of TSCA under the EPA’s Audit Policy. If any potential TSCA violations are discovered during the audit, we would voluntarily disclose them to the EPA under the Audit Policy. In August 2014, the EPA staff began its own TSCA inspection of both Afton and Ethyl. While it is not possible to predict or determine with certainty the outcome, we do not believe that any findings identified as a result of our audit or the EPA’s TSCA inspection will have a material adverse effect on our consolidated results of operations, financial condition, or cash flows.

ITEM 2.     Unregistered Sales of Equity Securities and Use of Proceeds

On October 21, 2015, our Board of Directors approved a share repurchase program authorizing management to repurchase up to $500 million of NewMarket's outstanding common stock until December 31, 2018, as market conditions warrant and covenants under our existing agreements permit. We may conduct the share repurchases in the open market and in privately negotiated transactions. The repurchase program does not require NewMarket to acquire any specific number of shares and may be terminated or suspended at any time. Approximately $419 million remained available under the 2015 authorization at March 31, 2018. The following table outlines the purchases during the first quarter of 2018 under this authorization.

Issuer Purchases of Equity Securities

Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
January 1 to January 31	800	$	395.01	800	$	418,871,477
February 1 to February 28	0	0.00		0	418,871,477
March 1 to March 31	800	394.83		800	418,555,594
Total	1,600	$	394.93	1,600	$	418,555,594

26

ITEM 6.     Exhibits

Exhibit 3.1	Articles of Incorporation Amended and Restated effective April 27, 2012 (incorporated by reference to Exhibit 3.1 to Form 8-K (File No. 1-32190) filed April 30, 2012)
Exhibit 3.2	NewMarket Corporation Bylaws Amended and Restated effective August 6, 2015 (incorporated by reference to Exhibit 3.1 to Form 8-K (File No. 1- 32190) filed August 6, 2015)
Exhibit 10.1	Form of Performance Stock Award Agreement (incorporated by reference to Exhibit 10.1 to Form 8-K (File No. 1-32190) filed February 26, 2018).*
Exhibit 31(a)	Certification pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by Thomas E. Gottwald
Exhibit 31(b)	Certification pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by Brian D. Paliotti
Exhibit 32(a)	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by Thomas E. Gottwald
Exhibit 32(b)	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by Brian D. Paliotti
Exhibit 101	XBRL Instance Document and Related Items

* Indicates management contracts, compensatory plans or arrangements of the company required to be filed as an exhibit

27

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	NEWMARKET CORPORATION
	(Registrant)
Date: April 26, 2018	By: /s/ Brian D. Paliotti
	Brian D. Paliotti
	Vice President and
	Chief Financial Officer
	(Principal Financial Officer)
Date: April 26, 2018	By: /s/ William J. Skrobacz
	William J. Skrobacz
	Controller
	(Principal Accounting Officer)

28

EX-31.A

Exhibit 31(a)

CERTIFICATION

I, Thomas E. Gottwald, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended March 31, 2018 of NewMarket Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: April 26, 2018
	By:	/s/ Thomas E. Gottwald
	Thomas E. Gottwald
	Chairman of the Board, President, and Chief Executive Officer

EX-31.B

Exhibit 31(b)

CERTIFICATION

I, Brian D. Paliotti, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended March 31, 2018 of NewMarket Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: April 26, 2018
	By:	/s/ Brian D. Paliotti
	Brian D. Paliotti
	Vice President and Chief Financial Officer

EX-32.A

Exhibit 32(a)

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of NewMarket Corporation (the “Company”) for the period ending March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas E. Gottwald, chief executive officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

1.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

2.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Thomas E. Gottwald
Thomas E. Gottwald
Chairman of the Board, President, and Chief Executive Officer
April 26, 2018

EX-32.B

Exhibit 32(b)

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of NewMarket Corporation (the “Company”) for the period ending March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Paliotti, chief financial officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

1.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

2.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Brian D. Paliotti
Brian D. Paliotti
Vice President and Chief Financial Officer
April 26, 2018

XML

Document And Entity Information	3 Months Ended
	Mar. 31, 2018 shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Entity Registrant Name	NEWMARKET CORP
Entity Central Index Key	0001282637
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	11,787,054

XML

Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 589,245	$ 542,818
Cost of goods sold	432,462	374,007
Gross profit	156,783	168,811
Selling, general, and administrative expenses	40,913	40,449
Research, development, and testing expenses	34,295	38,130
Operating profit	81,575	90,232
Interest and financing expenses, net	5,164	5,572
Other income (expense), net	4,900	3,573
Income before income tax expense	81,311	88,233
Income tax expense	20,746	24,296
Net income	$ 60,565	$ 63,937
Earnings per share - basic and diluted (in dollars per share)	$ 5.14	$ 5.39
Cash dividends declared per share (in dollars per share)	$ 1.75	$ 1.75

XML

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 60,565	$ 63,937
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 2018 and $(296) in 2017	(591)	(474)
Amortization of actuarial net loss (gain) included in net periodic benefit cost, net of income tax expense (benefit) of $360 in 2018 and $509 in 2017	1,136	783
Total pension plans and other postretirement benefits	545	309
Foreign currency translation adjustments, net of income tax expense (benefit) of $(40) in 2018 and $280 in 2017	12,758	3,642
Other comprehensive income (loss)	13,303	3,951
Comprehensive income	$ 73,868	$ 67,888

XML

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Amortization of prior service cost (credit) included in net periodic benefit cost, income tax expense (benefit)	$ (180)	$ (296)
Amortization of actuarial net loss (gain) included in net periodic benefit cost, income tax expense (benefit)	360	509
Foreign currency translation adjustments, income tax expense (benefit)	$ (40)	$ 280

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 72,830	$ 84,166
Trade and other accounts receivable, less allowance for doubtful accounts	378,442	335,317
Inventories
Finished goods and work-in-process	328,782	319,036
Raw materials	61,229	51,485
Stores, supplies, and other	12,806	12,576
Total inventories	402,817	383,097
Prepaid expenses and other current assets	32,401	31,074
Total current assets	886,490	833,654
Property, plant, and equipment, at cost	1,502,591	1,474,962
Less accumulated depreciation and amortization	840,122	822,681
Net property, plant, and equipment	662,469	652,281
Intangibles (net of amortization) and goodwill	142,137	144,337
Prepaid pension cost	73,241	66,495
Deferred income taxes	4,316	4,349
Deferred charges and other assets	10,812	11,038
Total assets	1,779,465	1,712,154
Current liabilities:
Accounts payable	162,651	159,408
Accrued expenses	91,457	107,999
Dividends payable	18,997	19,055
Income taxes payable	17,207	16,340
Other current liabilities	12,715	13,991
Total current liabilities	303,027	316,793
Long-term debt	624,894	602,900
Other noncurrent liabilities	196,759	190,812
Total liabilities	1,124,680	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 - 11,787,054 at March 31, 2018 and 11,779,978 at December 31, 2017)	36	0
Accumulated other comprehensive loss	(132,691)	(145,994)
Retained earnings	787,440	747,643
Total shareholders' equity	654,785	601,649
Total liabilities and shareholders’ equity	$ 1,779,465	$ 1,712,154

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 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	11,787,054	11,779,978
Common stock, outstanding shares	11,787,054	11,779,978

XML

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	63,937			63,937
Other comprehensive income (loss)	3,951		3,951
Cash dividends	(20,741)			(20,741)
Stock-based compensation (in shares)		6,645
Stock-based compensation	617	$ 617
Balance (in shares) at Mar. 31, 2017		11,852,617
Balance at Mar. 31, 2017	$ 531,015	$ 2,220	(178,559)	707,354
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	60,565			60,565
Other comprehensive income (loss)	13,303		13,303
Cash dividends	(20,629)			(20,629)
Repurchases of common stock (in shares)		(1,600)
Repurchases of common stock	(632)	$ (489)		(143)
Stock-based compensation (in shares)		8,676
Stock-based compensation	$ 529	$ 525		4
Balance (in shares) at Mar. 31, 2018	11,787,054	11,787,054
Balance at Mar. 31, 2018	$ 654,785	$ 36	$ (132,691)	$ 787,440

XML

Consolidated Statements Of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 1.75	$ 1.75

XML

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 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	60,565	63,937
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	17,665	12,306
Noncash pension and postretirement expense	1,618	2,007
Deferred income tax expense	2,714	5,283
Working capital changes	(63,655)	(39,836)
Cash pension and postretirement contributions	(6,713)	(6,326)
Other, net	(2,154)	(3,163)
Net Cash Provided by (Used in) Operating Activities	10,040	34,208
Cash flows from investing activities:
Capital expenditures	(22,797)	(46,346)
Other, net	0	(2,000)
Net Cash Provided by (Used in) Investing Activities	(22,797)	(48,346)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	22,000	(156,000)
Issuance of 3.78% senior notes	0	250,000
Dividends paid	(20,629)	(20,741)
Repurchases of common stock	(632)	0
Other, net	(98)	(1,447)
Net Cash Provided by (Used in) Financing Activities	641	71,812
Effect of foreign exchange on cash and cash equivalents	780	1,416
(Decrease) increase in cash and cash equivalents	(11,336)	59,090
Cash and cash equivalents at end of period	$ 72,830	$ 251,244

XML

Condensed Consolidated Statements of Cash Flows (Parenthetical)	Mar. 31, 2018	Mar. 31, 2017
3.78% Senior Notes [Member]
Senior notes, interest rate	3.78%	3.78%

XML

Financial Statement Presentation

3 Months Ended

Mar. 31, 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 March 31, 2018 and December 31, 2017, and our consolidated results of operations and comprehensive income, changes in shareholders' equity, and cash flows for the three months ended March 31, 2018 and March 31, 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 three month period ended March 31, 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.

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.

XML

Acquisition of Business

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Business Combination Disclosure [Text Block]

Acquisition of Business

On July 3, 2017, Afton Chemical de Mexico, S.A. de C.V., an indirect, wholly-owned subsidiary of NewMarket Corporation, 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 have initiated 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 amounts recorded for certain assets and liabilities are preliminary and are subject to adjustment if additional information is obtained about facts that existed as of the acquisition date. The final determination of the fair values of certain assets and liabilities will be completed within the measurement period of up to one year from the acquisition date.

A preliminary 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.

XML

Net Sales Net Sales

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

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, as well as the sale in North America of tetraethyl lead (TEL). We sell petroleum additives products across the world including to customers located in the United States, Europe, Asia Pacific, 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 $7.9 million at March 31, 2018 and $3.3 million at December 31, 2017. Revenue of $3.2 million was recognized in 2018 from funds collected in advance from customers in an earlier period.

We recognize revenue when control of the product is transferred to our customer and for an amount that reflects the consideration that 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 and TEL 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. For the first quarter of 2018, we recognized an increase to net sales of $1.0 million related to adjustments to rebates or business development funds which were recognized in revenue in a prior period. At March 31, 2018, accrued rebates were $11.3 million and accrued business development funds were $1.5 million.

The following table provides information on our net sales by geographic area. Information on net sales by segment is in Note 4.

	Three Months Ended March 31
(in thousands)	2018
Net sales
United States	$	181,638
China	64,211
Europe, Middle East, Africa, India	198,660
Asia Pacific, except China	82,506
Other foreign	62,230
Net sales	$	589,245

XML

Segment Information

3 Months Ended

Mar. 31, 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). The results of AMSA's operations are reflected in the petroleum additives segment. See Note 2 for further information on AMSA.

Net Sales by Segment

	Three Months Ended March 31
(in thousands)	2018		2017
Petroleum additives
Lubricant additives	$	485,049	$	443,961
Fuel additives	101,859		96,072
Total	586,908		540,033
All other	2,337		2,785
Net sales	$	589,245	$	542,818

Segment Operating Profit

	Three Months Ended March 31
(in thousands)	2018			2017
Petroleum additives	$	84,140		$	95,413
All other	(77		)	1,035
Segment operating profit	84,063			96,448
Corporate, general, and administrative expenses	(5,664		)	(6,346		)
Interest and financing expenses, net	(5,164		)	(5,572		)
Other income (expense), net	8,076			3,703
Income before income tax expense	$	81,311		$	88,233

XML

Pension Plans and Other Postretirement Benefits

3 Months Ended

Mar. 31, 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 three months ended March 31, 2018, as well as the remaining cash contributions we expect to make during the year endingDecember 31, 2018, for our domestic and foreign pension plans and domestic postretirement benefit plan.

(in thousands)	Actual Cash Contributions for Three Months Ended March 31, 2018		Expected Remaining Cash Contributions for Year Ending December 31, 2018
Domestic plans
Pension benefits	$	4,818	$	14,455
Postretirement benefits	423		1,270
Foreign plans
Pension benefits	1,472		4,472

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
	Three Months Ended March 31,
(in thousands)	2018			2017			2018			2017
Service cost	$	3,972		$	3,379		$	216		$	186
Interest cost	3,343			3,360			370			394
Expected return on plan assets	(7,445		)	(6,503		)	(249		)	(309		)
Amortization of prior service cost (credit)	7			7			(757		)	(757		)
Amortization of actuarial net (gain) loss	1,341			1,229			0			0
Net periodic benefit cost (income)	$	1,218		$	1,472		$	(420	)	$	(486	)

	Foreign
	Pension Benefits
	Three Months Ended March 31,
(in thousands)	2018			2017
Service cost	$	2,079		$	1,821
Interest cost	1,164			1,018
Expected return on plan assets	(2,557		)	(2,024		)
Amortization of prior service cost (credit)	(21		)	(19		)
Amortization of actuarial net (gain) loss	155			225
Net periodic benefit cost (income)	$	820		$	1,021

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Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

We had 25,384 shares of nonvested restricted stock at March 31, 2018 and 23,775 shares of nonvested restricted stock at March 31, 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.

	Three Months Ended March 31
(in thousands, except per-share amounts)	2018		2017
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$	60,565	$	63,937
Earnings allocated to participating securities	103		127
Net income attributable to common shareholders after allocation of earnings to participating securities	$	60,462	$	63,810
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted	11,762		11,829
Earnings per share - basic and diluted	$	5.14	$	5.39

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Intangibles (Net of Amortization) and Goodwill

3 Months Ended

Mar. 31, 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 $142 million at March 31, 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.

	March 31, 2018				December 31, 2017
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizing intangible assets
Formulas and technology	$	12,365	$	3,887	$	12,339	$	3,280
Contract	2,000		250		2,000		200
Customer bases	15,766		7,352		15,759		5,140
Trademarks and trade names	1,537		1,250		1,531		1,213
Goodwill	123,208				122,541
	$	154,876	$	12,739	$	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 March 31, 2018 is due to an immaterial purchase adjustment to goodwill related to AMSA and foreign currency fluctuation. The goodwill and identifiable intangibles from the acquisition of AMSA are preliminary and are subject to adjustment if additional information is obtained about facts that existed as of the acquisition date. The final determination of the fair values will be completed within the measurement period of up to one year from the acquisition date. See Note 2 for more information. There is no accumulated goodwill impairment.

Amortization expense was (in thousands):

Three months ended March 31, 2018	$	2,906
Three months ended March 31, 2017	218

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	$	4,760
2019	4,675
2020	3,026
2021	2,206
2022	1,473
2023	957

We amortize contracts over 10 years; customer bases over 4 to 20 years; formulas and technology over 3 to 10 years; and trademarks and trade names over 10 years.

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Long-term Debt

3 Months Ended

Mar. 31, 2018

Long-term Debt and Capital Lease Obligations [Abstract]

Long-term Debt

Long-term Debt

(in thousands)	March 31, 2018		December 31, 2017
Senior notes - 4.10% due 2022 (net of related deferred financing costs)	$	347,238	$	347,091
Senior notes - 3.78% due 2029	250,000		250,000
Revolving credit facility	22,000		0
Capital lease obligations	5,656		5,809
	$	624,894	$	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 the senior notes as of March 31, 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 3.2% during the first three months of 2018 and 2.5% during the full year of 2017. We were in compliance with all covenants under the senior notes as of March 31, 2018 and December 31, 2017.

The following table provides information related to the unused portion of our revolving credit facility:

(in thousands)	March 31, 2018		December 31, 2017
Maximum borrowing capacity under the revolving credit facility	$	850,000	$	850,000
Outstanding borrowings under the revolving credit facility	22,000		0
Outstanding letters of credit	2,710		2,830
Unused portion of revolving credit facility	$	825,290	$	847,170

The capital lease obligations are related to the Singapore manufacturing facility.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 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 the Toxic Substances Control Act (TSCA) under the Environmental Protection Agency's (EPA) audit policy (Audit Policy). If any potential TSCA violations are discovered during the audit, we would voluntarily disclose them to the EPA under the Audit Policy. In August 2014, the EPA staff began its own TSCA inspection of both Afton and Ethyl. While it is not possible to predict or determine with certainty the outcome, we do not believe that any findings identified as a result of our 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 $13 million at March 31, 2018 and $14 million at 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 $7 million of the total accrual above at both March 31, 2018 and December 31, 2017, using discount rates ranging from 4% to 9% for both periods. The aggregate undiscounted amount for these sites was $9 million at March 31, 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 $3 million at both March 31, 2018 and December 31, 2017. The amount related to remediation of groundwater and soil for the Texas site was $4 million at both March 31, 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 March 31, 2018. The amount accrued for this site is not material.

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Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 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	0			3,642			3,642
Amounts reclassified from accumulated other comprehensive loss (a)	309			0			309
Other comprehensive income (loss)	309			3,642			3,951
Balance at March 31, 2017	$	(75,878	)	$	(102,681	)	$	(178,559	)
Balance at December 31, 2017	$	(63,520	)	$	(82,474	)	$	(145,994	)
Other comprehensive income (loss) before reclassifications	0			12,758			12,758
Amounts reclassified from accumulated other comprehensive loss (a)	545			0			545
Other comprehensive income (loss)	545			12,758			13,303
Balance at March 31, 2018	$	(62,975	)	$	(69,716	)	$	(132,691	)

(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 Form 10-Q and Note 17 in our 2017 Annual Report for further information.

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Fair Value Measurements

3 Months Ended

Mar. 31, 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 $73 million at March 31, 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 three months ended March 31, 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 also based on the last quoted price closest to March 31, 2018. The fair value of our debt instruments is categorized as Level 2.

	March 31, 2018				December 31, 2017
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt (excluding capital lease obligation)	$	619,238	$	625,235	$	597,091	$	623,557

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

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 March 31, 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 December 31, 2017 and March 31, 2018, 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 first three months of 2018, we made immaterial adjustments to the calculations recorded as of December 31, 2017.

We are evaluating certain aspects of the Tax Reform Act which could 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 period the decision is made.

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Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 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 three months ended March 31, 2017, operating profit decreased by $3 million and other income (expense), net increased by $3 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 is currently required for the adoption of ASU 2016-02, which is effective for our reporting period beginning January 1, 2019. Early adoption is permitted. We are currently assessing the impact that the adoption of ASU 2016-02 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.

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 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 that 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 and TEL 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.

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Acquisition of Business Acquisition of Business (Tables)

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

A preliminary 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 [Table Text Block]

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

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Net Sales (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table provides information on our net sales by geographic area. Information on net sales by segment is in Note 4.

	Three Months Ended March 31
(in thousands)	2018
Net sales
United States	$	181,638
China	64,211
Europe, Middle East, Africa, India	198,660
Asia Pacific, except China	82,506
Other foreign	62,230
Net sales	$	589,245

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Net Sales by Segment

Net Sales by Segment

	Three Months Ended March 31
(in thousands)	2018		2017
Petroleum additives
Lubricant additives	$	485,049	$	443,961
Fuel additives	101,859		96,072
Total	586,908		540,033
All other	2,337		2,785
Net sales	$	589,245	$	542,818

Segment Operating Profit

Segment Operating Profit

	Three Months Ended March 31
(in thousands)	2018			2017
Petroleum additives	$	84,140		$	95,413
All other	(77		)	1,035
Segment operating profit	84,063			96,448
Corporate, general, and administrative expenses	(5,664		)	(6,346		)
Interest and financing expenses, net	(5,164		)	(5,572		)
Other income (expense), net	8,076			3,703
Income before income tax expense	$	81,311		$	88,233

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Pension Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 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 three months ended March 31, 2018, as well as the remaining cash contributions we expect to make during the year endingDecember 31, 2018, for our domestic and foreign pension plans and domestic postretirement benefit plan.

(in thousands)	Actual Cash Contributions for Three Months Ended March 31, 2018		Expected Remaining Cash Contributions for Year Ending December 31, 2018
Domestic plans
Pension benefits	$	4,818	$	14,455
Postretirement benefits	423		1,270
Foreign plans
Pension benefits	1,472		4,472

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
	Three Months Ended March 31,
(in thousands)	2018			2017			2018			2017
Service cost	$	3,972		$	3,379		$	216		$	186
Interest cost	3,343			3,360			370			394
Expected return on plan assets	(7,445		)	(6,503		)	(249		)	(309		)
Amortization of prior service cost (credit)	7			7			(757		)	(757		)
Amortization of actuarial net (gain) loss	1,341			1,229			0			0
Net periodic benefit cost (income)	$	1,218		$	1,472		$	(420	)	$	(486	)

	Foreign
	Pension Benefits
	Three Months Ended March 31,
(in thousands)	2018			2017
Service cost	$	2,079		$	1,821
Interest cost	1,164			1,018
Expected return on plan assets	(2,557		)	(2,024		)
Amortization of prior service cost (credit)	(21		)	(19		)
Amortization of actuarial net (gain) loss	155			225
Net periodic benefit cost (income)	$	820		$	1,021

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 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.

	Three Months Ended March 31
(in thousands, except per-share amounts)	2018		2017
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$	60,565	$	63,937
Earnings allocated to participating securities	103		127
Net income attributable to common shareholders after allocation of earnings to participating securities	$	60,462	$	63,810
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted	11,762		11,829
Earnings per share - basic and diluted	$	5.14	$	5.39

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Intangibles (Net of Amortization) and Goodwill (Tables)

3 Months Ended

Mar. 31, 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.

	March 31, 2018				December 31, 2017
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizing intangible assets
Formulas and technology	$	12,365	$	3,887	$	12,339	$	3,280
Contract	2,000		250		2,000		200
Customer bases	15,766		7,352		15,759		5,140
Trademarks and trade names	1,537		1,250		1,531		1,213
Goodwill	123,208				122,541
	$	154,876	$	12,739	$	154,170	$	9,833

Schedule Of Amortization Expense

Amortization expense was (in thousands):

Three months ended March 31, 2018	$	2,906
Three months ended March 31, 2017	218

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	$	4,760
2019	4,675
2020	3,026
2021	2,206
2022	1,473
2023	957

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Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2018

Long-term Debt and Capital Lease Obligations [Abstract]

Schedule Of Long-Term Debt

(in thousands)	March 31, 2018		December 31, 2017
Senior notes - 4.10% due 2022 (net of related deferred financing costs)	$	347,238	$	347,091
Senior notes - 3.78% due 2029	250,000		250,000
Revolving credit facility	22,000		0
Capital lease obligations	5,656		5,809
	$	624,894	$	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)	March 31, 2018		December 31, 2017
Maximum borrowing capacity under the revolving credit facility	$	850,000	$	850,000
Outstanding borrowings under the revolving credit facility	22,000		0
Outstanding letters of credit	2,710		2,830
Unused portion of revolving credit facility	$	825,290	$	847,170

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Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 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	0			3,642			3,642
Amounts reclassified from accumulated other comprehensive loss (a)	309			0			309
Other comprehensive income (loss)	309			3,642			3,951
Balance at March 31, 2017	$	(75,878	)	$	(102,681	)	$	(178,559	)
Balance at December 31, 2017	$	(63,520	)	$	(82,474	)	$	(145,994	)
Other comprehensive income (loss) before reclassifications	0			12,758			12,758
Amounts reclassified from accumulated other comprehensive loss (a)	545			0			545
Other comprehensive income (loss)	545			12,758			13,303
Balance at March 31, 2018	$	(62,975	)	$	(69,716	)	$	(132,691	)

(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 Form 10-Q and Note 17 in our 2017 Annual Report for further information.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Estimated Fair Value Of Long-Term Debt

	March 31, 2018				December 31, 2017
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt (excluding capital lease obligation)	$	619,238	$	625,235	$	597,091	$	623,557

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Acquisition of Business (Narrative) (Details) $ in Thousands	Jul. 03, 2017 USD ($)
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

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Acquisition of Business (Schedule of Business Acquisition, By Acquistion) (Details) $ in Millions	Jul. 03, 2017 USD ($)
Business Acquisition [Line Items]
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

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Acquisition of Business (Schedule of Finite Lived Intangible Assets Acquired As Part of Business Combination) (Details) - USD ($) $ in Millions		3 Months Ended
	Jul. 03, 2017	Mar. 31, 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	10 years
Maximum [Member] | Customer Bases [Member]
Business Acquisition [Line Items]
Estimated economic life, in years		20 years

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Net Sales (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Customer Advances, Current	$ 7.9	$ 3.3
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	1.0
Customer Rebates, Current	11.3
Business Development Fund Accrual	$ 1.5

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Net Sales ( Schedule of Net Sales by Geographical Area) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 589,245	$ 542,818
Domestic Plan [Member]
Disaggregation of Revenue [Line Items]
Net sales	181,638
China
Disaggregation of Revenue [Line Items]
Net sales	64,211
Europe, Middle East, Africa, India [Member]
Disaggregation of Revenue [Line Items]
Net sales	198,660
Asia Pacfic excl China [Member]
Disaggregation of Revenue [Line Items]
Net sales	82,506
Other Foreign [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 62,230

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Segment Information (Net Sales By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Information [Line Items]
Net sales	$ 589,245	$ 542,818
Operating Segments [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Net sales	586,908	540,033
Operating Segments [Member] | All Other [Member]
Segment Information [Line Items]
Net sales	2,337	2,785
Operating Segments [Member] | Lubricant Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Net sales	485,049	443,961
Operating Segments [Member] | Fuel Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Net sales	$ 101,859	$ 96,072

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Segment Information (Segment Operating Profit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Information [Line Items]
Segment operating profit	$ 81,575	$ 90,232
Corporate, general, and administrative expenses	(40,913)	(40,449)
Interest and financing expenses, net	(5,164)	(5,572)
Other income (expense), net	4,900	3,573
Income before income tax expense	81,311	88,233
Operating Segments [Member]
Segment Information [Line Items]
Segment operating profit	84,063	96,448
Operating Segments [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Segment operating profit	84,140	95,413
Operating Segments [Member] | All Other [Member]
Segment Information [Line Items]
Segment operating profit	(77)	1,035
Corporate, Non-Segment [Member]
Segment Information [Line Items]
Corporate, general, and administrative expenses	(5,664)	(6,346)
Other income (expense), net	$ 8,076	$ 3,703

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Pension Plans and Other Postretirement Benefits (Cash Contributions Made And Expected Remaining Contributions For Pension And Postretirement Benefit Plans) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Pension Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions	$ 4,818
Expected Remaining Cash Contributions	14,455
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions	1,472
Expected Remaining Cash Contributions	4,472
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions	423
Expected Remaining Cash Contributions	$ 1,270

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Pension Plans and Other Postretirement Benefits (Net Periodic Benefit Cost (Income) For Pension And Postretirement Benefit Plans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,972	$ 3,379
Interest cost	3,343	3,360
Expected return on plan assets	(7,445)	(6,503)
Amortization of prior service cost (credit)	7	7
Amortization of actuarial net (gain) loss	1,341	1,229
Net periodic benefit cost (income)	1,218	1,472
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2,079	1,821
Interest cost	1,164	1,018
Expected return on plan assets	(2,557)	(2,024)
Amortization of prior service cost (credit)	(21)	(19)
Amortization of actuarial net (gain) loss	155	225
Net periodic benefit cost (income)	820	1,021
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	216	186
Interest cost	370	394
Expected return on plan assets	(249)	(309)
Amortization of prior service cost (credit)	(757)	(757)
Amortization of actuarial net (gain) loss	0	0
Net periodic benefit cost (income)	$ (420)	$ (486)

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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 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)	25,384	23,775
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$ 60,565	$ 63,937
Earnings allocated to participating securities	103	127
Net income attributable to common shareholders after allocation of earnings to participating securities	$ 60,462	$ 63,810
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted (in shares)	11,762,000	11,829,000
Earnings per share - basic and diluted (in dollars per share)	$ 5.14	$ 5.39

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Intangibles (Net of Amortization) and Goodwill (Narrative) (Details) - USD ($)		3 Months Ended
	Jul. 03, 2017	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Net carrying amount of intangibles and goodwill		$ 142,137,000	$ 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
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years		10 years
Minimum [Member] | Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years	3 years	3 years
Minimum [Member] | Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years		4 years
Maximum [Member] | Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years	6 years	10 years
Maximum [Member] | Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated economic life, in years		20 years

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Intangibles (Net of Amortization) and Goodwill (Schedule Of Information Related To Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Accumulated Amortization	$ 12,739	$ 9,833
Goodwill, Gross Carrying Amount	123,208	122,541
Amortizing intangible assets and Goodwill, Gross Carrying Amount	154,876	154,170
Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	12,365	12,339
Amortizing intangible assets, Accumulated Amortization	3,887	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	250	200
Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	15,766	15,759
Amortizing intangible assets, Accumulated Amortization	7,352	5,140
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	1,537	1,531
Amortizing intangible assets, Accumulated Amortization	$ 1,250	$ 1,213

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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
	Mar. 31, 2018	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2,906	$ 218
2018	4,760
2019	4,675
2020	3,026
2021	2,206
2022	1,473
2023	$ 957

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Long-term Debt (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 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	3.20%	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%

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Long-term Debt (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 624,894	$ 602,900
4.10% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 347,238	347,091
Senior notes, interest rate	4.10%
Debt instruments maturity date	2022
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	2029
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 22,000	0
Capital Lease Obligation [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligation	$ 5,656	$ 5,809

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Long-term Debt (Schedule Of Unused Portion Of Revolving Credit Facility) (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 624,894,000	$ 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	22,000,000	0
Outstanding letters of credit	2,710,000	2,830,000
Unused portion of revolving credit facility	$ 825,290,000	$ 847,170,000

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Commitments and Contingencies (Environmental) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Site Contingency [Line Items]
Accruals for environmental remediation, dismantling, and decontamination	$ 13	$ 14
Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member]
Site Contingency [Line Items]
Accruals for environmental remediation, dismantling, and decontamination	7	7
Accruals for environmental remediation, dismantling, and decontamination, undiscounted	9	10
Former TEL Plant Site, Louisiana [Member]
Site Contingency [Line Items]
Accrual for remediation of groundwater and soil	3	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	4.00%	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%

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Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Schedule of Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 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		0	0
Other comprehensive income (loss) before reclassifications, Foreign Currency Translation Adjustments		12,758	3,642
Other comprehensive income (loss) before reclassifications, Accumulated Other Comprehensive (Loss) Income		12,758	3,642
Amounts reclassified from accumulated other comprehensive loss, Pension Plans and Other Postretirement Benefits	[1]	545	309
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		545	309
Total pension plans and other postretirement benefits		545	309
Other comprehensive income (loss), Foreign Currency Translation Adjustments		12,758	3,642
Other comprehensive income (loss)		13,303	3,951
Pension Plans and Other Postretirement Benefits, Ending Balance		(62,975)	(75,878)
Foreign Currency Translation Adjustments, Ending Balance		(69,716)	(102,681)
Accumulated Other Comprehensive (Loss) Income, Ending Balance		$ (132,691)	$ (178,559)

[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 Form 10-Q and Note 17 in our 2017 Annual Report for further information.

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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 72,830	$ 84,166	$ 251,244	$ 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	$ 72,830	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	$ 72,830	$ 84,166

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Fair Value Measurements (Estimated Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt (excluding capital lease obligation)	$ 619,238	$ 597,091
Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term debt (excluding capital lease obligation), Fair Value	$ 625,235	$ 623,557

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Income Taxes (Details)	Jan. 01, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%

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Recent Accounting Pronouncements (Narrative) (Details) - Accounting Standards Update 201707 [Member] $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results	$ (3)
New Accounting Pronouncement or Change in Accounting Principle Effect of Change on Other Income	$ 3