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, 2013

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, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨	Smaller reporting company	¨

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, 2013: 13,327,077

NEWMARKET CORPORATION

INDEX

	Page Number
PART I. FINANCIAL INFORMATION
ITEM 1. Financial Statements (unaudited)
Consolidated Statements of Income - Three Months Ended March 31, 2013 and March 31, 2012	3
Consolidated Statements of Comprehensive Income - Three Months Ended March 31, 2013 and March 31, 2012	4
Consolidated Balance Sheets - March 31, 2013 and December 31, 2012	5
Consolidated Statements of Shareholders’ Equity - Three Months Ended March 31, 2013 and Year Ended December 31, 2012	6
Consolidated Statements of Cash Flows - Three Months Ended March 31, 2013 and March 31, 2012	7
Notes to Consolidated Financial Statements	8
Financial Statement Presentation	8
Asset Retirement Obligations	8
Segment Information	9
Pension Plans and Other Postretirement Benefits	10
Earnings Per Share	11
Intangibles (Net of Amortization) and Goodwill	11
Long-term Debt	12
Contractual Commitments and Contingencies	13
Derivatives and Hedging Activities	14
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	16
Fair Value Measurements	17
Consolidating Financial Information	19
ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operation	26
ITEM 3. Quantitative and Qualitative Disclosures About Market Risk	33
ITEM 4. Controls and Procedures	33
PART II. OTHER INFORMATION
ITEM 1. Legal Proceedings	34
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds	34
ITEM 6. Exhibits	34
SIGNATURES	35
EXHIBIT INDEX	36

2

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,
	2013		2012
Revenue:
Net sales - product	$	559,750	$	559,821
Rental revenue	2,858		2,858
	562,608		562,679
Costs:
Cost of goods sold - product	391,343		392,075
Cost of rental	1,068		1,068
	392,411		393,143
Gross profit	170,197		169,536
Selling, general, and administrative expenses	40,941		36,908
Research, development, and testing expenses	31,021		27,895
Operating profit	98,235		104,733
Interest and financing expenses, net	5,109		4,482
Loss on early extinguishment of debt	0		3,221
Other income, net	747		1,773
Income before income tax expense	93,873		98,803
Income tax expense	26,038		32,256
Net income	$	67,835	$	66,547
Earnings per share - basic and diluted	$	5.07	$	4.96
Cash dividends declared per common share	$	0.90	$	0.75

See accompanying Notes to Consolidated Financial Statements

3

NEWMARKET CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(in thousands)	Three Months Ended March 31,
	2013			2012
Net income	$	67,835		$	66,547
Other comprehensive (loss) income:
Pension plans and other postretirement benefits:
Amortization of prior service cost included in net periodic benefit cost, net of income tax expense of $2 in 2013 and $10 in 2012	2			5
Amortization of actuarial net loss included in net periodic benefit cost, net of income tax expense of $794 in 2013 and $545 in 2012	1,363			1,031
Amortization of transition obligation included in net periodic benefit cost, net of income tax expense of $3 in 2013 and 2012	10			10
Total pension plans and other postretirement benefits	1,375			1,046
Derivative instruments:
Unrealized loss on derivative instruments, net of income tax benefit of $89 in 2012	0			(139		)
Reclassification adjustments for losses on derivative instruments included in net income, net of income tax expense of $135 in 2013 and $155 in 2012	213			244
Total derivative instruments	213			105
Foreign currency translation adjustments, net of income tax (benefit) expense of ($674) in 2013 and $472 in 2012	(18,280		)	6,669
Unrealized gain on marketable securities, net of income tax expense of $164 in 2012	0			265
Other comprehensive (loss) income	(16,692		)	8,085
Comprehensive income	$	51,143		$	74,632

See accompanying Notes to Consolidated Financial Statements

4

NEWMARKET CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share amounts)	March 31, 2013			December 31, 2012
ASSETS
Current assets:
Cash and cash equivalents	$	64,013		$	89,129
Trade and other accounts receivable, less allowance for doubtful accounts ($502 in 2013 and $319 in 2012)	331,155			297,055
Inventories:
Finished goods and work-in-process	260,682			265,017
Raw materials	51,970			48,881
Stores, supplies, and other	8,687			8,776
	321,339			322,674
Deferred income taxes	7,451			8,452
Prepaid expenses and other current assets	34,256			18,185
Total current assets	758,214			735,495
Property, plant, and equipment, at cost	1,078,658			1,070,967
Less accumulated depreciation and amortization	718,064			712,596
Net property, plant, and equipment	360,594			358,371
Prepaid pension cost	12,800			12,710
Deferred income taxes	53,960			55,123
Other assets and deferred charges	67,443			72,007
Intangibles (net of amortization) and goodwill	28,378			30,542
Total assets	$	1,281,389		$	1,264,248
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	115,675		$	119,298
Accrued expenses	65,549			79,061
Dividends payable	10,282			0
Book overdraft	5,149			3,906
Long-term debt, current portion	5,193			4,382
Income taxes payable	25,294			10,024
Total current liabilities	227,142			216,671
Long-term debt	425,422			424,407
Other noncurrent liabilities	210,256			220,965
Total liabilities	862,820			862,043
Commitments and contingencies (Note 8)
Shareholders’ equity:
Common stock and paid-in capital (without par value; authorized shares - 80,000,000; issued and outstanding shares - 13,327,077 at March 31, 2013 and 13,417,877 at December 31, 2012)	0			721
Accumulated other comprehensive loss	(127,381		)	(110,689		)
Retained earnings	545,950			512,173
	418,569			402,205
Total liabilities and shareholders’ equity	$	1,281,389		$	1,264,248

See accompanying Notes to Consolidated Financial Statements

5

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, 2011	13,404,831		$	64		$	(98,732	)	$	648,261		$	549,593
Net income									239,593			239,593
Other comprehensive loss						(11,957		)				(11,957		)
Ordinary cash dividends ($3.00 per share)									(40,234		)	(40,234		)
Special cash dividend ($25.00 per share)									(335,447		)	(335,447		)
Stock-based compensation	13,046		657									657
Balance at December 31, 2012	13,417,877		721			(110,689		)	512,173			402,205
Net income									67,835			67,835
Other comprehensive loss						(16,692		)				(16,692		)
Ordinary cash dividends ($0.90 per share)									(11,998		)	(11,998		)
Repurchases of common stock	(90,800	)	(969		)				(22,060		)	(23,029		)
Stock-based compensation			248									248
Balance at March 31, 2013	13,327,077		$	0		$	(127,381	)	$	545,950		$	418,569

See accompanying Notes to Consolidated Financial Statements

6

NEWMARKET CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)	Three Months Ended March 31,
	2013			2012
Cash and cash equivalents at beginning of year	$	89,129		$	50,370
Cash flows from operating activities:
Net income	67,835			66,547
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	11,796			10,482
Noncash environmental remediation and dismantling	281			251
Noncash pension benefits expense	4,569			3,792
Noncash postretirement benefits expense	877			993
Noncash foreign exchange (gain) loss	(86		)	1,215
Deferred income tax expense	1,742			3,077
Loss on early extinguishment of debt	0			3,221
Restricted stock award	244			0
Unrealized gain on derivative instruments, net	(3,212		)	(4,208		)
Working capital changes	(55,707		)	(22,877		)
Realized loss on derivative instruments, net	2,535			2,474
Cash pension benefits contributions	(7,573		)	(7,355		)
Cash postretirement benefits contributions	(458		)	(628		)
Change in book overdraft	1,243			6,032
Other, net	3,042			74
Cash provided from (used in) operating activities	27,128			63,090
Cash flows from investing activities:
Capital expenditures	(16,109		)	(7,432		)
Deposits for interest rate swap	(2,982		)	(5,079		)
Return of deposits for interest rate swap	6,850			8,340
Payments on settlement of interest rate swap	(2,617		)	(2,574		)
Receipts from settlement of interest rate swap	82			100
Cash provided from (used in) investing activities	(14,776		)	(6,645		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000			(22,000		)
Repayment of Foundry Park I mortgage loan	0			(715		)
Net borrowings (repayments) under lines of credit	811			(223		)
Dividends paid	(11,998		)	(10,054		)
Debt issuance costs	(1,115		)	(2,351		)
Repurchases of common stock	(22,508		)	0
Cash provided from (used in) financing activities	(33,810		)	(35,343		)
Effect of foreign exchange on cash and cash equivalents	(3,658		)	1,274
(Decrease) increase in cash and cash equivalents	(25,116		)	22,376
Cash and cash equivalents at end of period	$	64,013		$	72,746

See accompanying Notes to Consolidated Financial Statements

7

NEWMARKET CORPORATION AND SUBSIDIARIES

NOTES TO 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, 2013 and December 31, 2012, the change in our shareholders’ equity for the three months ended March 31, 2013 and the year ended December 31, 2012, our consolidated results of operation, comprehensive income, and cash flows for the three months ended March 31, 2013 and March 31, 2012. 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, 2012 (2012 Annual Report), as filed with the Securities and Exchange Commission (SEC). The results of operation for the three month period ended March 31, 2013 are not necessarily indicative of the results to be expected for the full year ending December 31, 2013. The December 31, 2012 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.

At both March 31, 2013 and December 31, 2012, we had a book overdraft for some of our disbursement cash accounts. A book overdraft represents disbursements that have not cleared the bank accounts at the end of the reporting period. There are no agreements with the same banks to offset the presented balance. We transfer cash on an as-needed basis to fund these items as they clear the bank in subsequent periods.

Certain reclassifications have been made to the accompanying consolidated financial statements to conform to the current presentation.

Cash dividends for the three months ended March 31, 2013 and March 31, 2012 were declared and paid as shown in the table below.

Year	Date Declared	Date Paid	Per Share Amount
2013	February 28, 2013	April 1, 2013	$	0.90
2012	February 23, 2012	April 2, 2012	0.75

2.    Asset Retirement Obligations

Our asset retirement obligations are related primarily to past tetraethyl lead (TEL) operations. The following table illustrates the activity associated with our asset retirement obligations for the three months ended March 31, 2013 and March 31, 2012.

(in thousands)	2013			2012
Asset retirement obligations, January 1	$	2,800		$	3,297
Accretion expense	30			43
Liabilities settled	(297		)	(128		)
Changes in expected cash flows and timing	185			98
Asset retirement obligations, March 31	$	2,718		$	3,310

8

3.    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 contract manufacturing performed by Ethyl Corporation (Ethyl).

Consolidated Revenue by Segment

	Three Months Ended March 31,
(in thousands)	2013		2012
Petroleum additives
Lubricant additives	$	452,672	$	444,545
Fuel additives	105,728		113,147
Total	558,400		557,692
Real estate development	2,858		2,858
All other	1,350		2,129
Consolidated revenue	$	562,608	$	562,679

Segment Operating Profit

	Three Months Ended March 31,
(in thousands)	2013			2012
Petroleum additives	$	102,028		$	107,154
Real estate development	1,790			1,789
All other	(401		)	519
Segment operating profit	103,417			109,462
Corporate, general, and administrative expenses	(5,216		)	(5,505		)
Interest and financing expenses, net	(5,109		)	(4,482		)
Gain on interest rate swap agreement (a)	678			1,735
Loss on early extinguishment of debt (b)	0			(3,221		)
Other income, net	103			814
Income before income tax expense	$	93,873		$	98,803

(a) The gain on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

(b) In March 2012, we entered into a $650 millionfive-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

9

Segment Depreciation and Amortization

	Three Months Ended March 31,
(in thousands)	2013		2012
Petroleum additives	$	9,829	$	8,797
Real estate development	1,295		946
All other and corporate	672		739
Total depreciation and amortization	$	11,796	$	10,482

4.    Pension Plans and Other Postretirement Benefits

The table below shows cash contributions made during the three months ended March 31, 2013, as well as expected remaining cash contributions for the year endingDecember 31, 2013 for both our domestic and foreign pension plans and postretirement benefit plans.

(in thousands)	Actual Cash Contributions for Three Months Ended March 31, 2013		Expected Remaining Cash Contributions for Year Ending December 31, 2013
Domestic plans
Pension benefits	$	5,635	$	16,915
Postretirement benefits	409		1,228
Foreign plans
Pension benefits	1,938		4,930
Postretirement benefits	49		147

The tables below present information on net periodic benefit cost for our pension and postretirement benefit plans.

	Domestic
	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,
(in thousands)	2013			2012			2013			2012
Service cost	$	2,663		$	2,157		$	499		$	522
Interest cost	2,384			2,359			682			787
Expected return on plan assets	(3,617		)	(3,301		)	(364		)	(373		)
Amortization of prior service cost	4			53			2			2
Amortization of actuarial net loss	1,801			1,292			0			0
Net periodic benefit cost	$	3,235		$	2,560		$	819		$	938

	Foreign
	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,
(in thousands)	2013			2012			2013		2012
Service cost	$	1,354		$	1,167		$	8	$	7
Interest cost	1,357			1,333			27		27
Expected return on plan assets	(1,729		)	(1,506		)	0		0
Amortization of prior service credit	(2		)	(38		)	0		0
Amortization of transition obligation	0			0			13		13
Amortization of actuarial net loss	354			276			10		8
Net periodic benefit cost	$	1,334		$	1,232		$	58	$	55

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5.    Earnings Per Share

Options and stock-based compensation awards are not included in the computation of diluted earnings per share if the impact on earnings per share would be anti-dilutive. We had 11,940 shares of nonvested restricted stock that were excluded from the calculation of diluted earnings per share for the three months ended March 31, 2013. We had no anti-dilutive options or stock-based compensation awards that were excluded from the calculation of diluted earnings per share for the three months ended March 31, 2012.

The nonvested restricted stock is considered a participating security since the stock contains nonforfeitable rights to dividends. As such, we use the two-class method to compute 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)	2013		2012
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$	67,835	$	66,547
Earnings allocated to participating securities	61		0
Net income attributable to common shareholders after allocation of earnings to participating securities	$	67,774	$	66,547
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted	13,376		13,405
Earnings per share - basic and diluted	$	5.07	$	4.96

6.    Intangibles (Net of Amortization) and Goodwill

	Identifiable Intangibles
	March 31, 2013				December 31, 2012
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizing intangible assets
Formulas and technology	$	91,526	$	76,106	$	91,662	$	74,762
Contracts	9,593		7,079		9,593		6,734
Customer bases	7,006		2,509		7,021		2,400
Trademarks and trade names	1,560		492		1,586		426
Goodwill	4,879				5,002
	$	114,564	$	86,186	$	114,864	$	84,322

All of the intangibles relate to the petroleum additives segment. The change in the gross carrying amount between 2012 and 2013 is due to foreign currency fluctuations. There is no accumulated goodwill impairment.

Amortization expense was (in millions):

Three months ended March 31, 2013	$	1.9
Three months ended March 31, 2012	1.9

11

Estimated amortization expense for the remainder of 2013, as well as annual amortization expense related to our intangible assets for the next five years is expected to be (in millions):

2013	$	5.2
2014	6.2
2015	5.8
2016	1.9
2017	0.7
2018	0.7

Generally, we amortize the cost of the customer base intangibles by an accelerated method and the cost of the remaining intangible assets by the straight-line method over their estimated economic lives. We generally amortize contracts over 1.5 to 10 years; customer bases over 20 years; and formulas and technology over 5 to 20 years. Trademarks and trade names are amortized over 10 years.

7.    Long-term Debt

(in thousands)	March 31, 2013			December 31, 2012
Senior notes - 4.10% due 2022	$	349,422		$	349,407
Revolving credit facility	76,000			75,000
Lines of credit	5,193			4,382
	430,615			428,789
Current maturities of long-term debt	(5,193		)	(4,382		)
	$	425,422		$	424,407

At March 31, 2013, we had outstanding senior notes in the aggregate principal amount of $350 million that bear interest at a fixed rate of 4.10% and are due in 2022 (4.10% senior notes). During March 2013, we registered these 4.10% senior notes under the Securities Act of 1933 and commenced an offer to exchange the previously unregistered 4.10% senior notes that were outstanding at December 31, 2012 for an equal aggregate principal amount.

The following table provides information related to the unused portion of our revolving credit facility in effect at March 31, 2013 and December 31, 2012:

(in millions)	March 31, 2013		December 31, 2012
Maximum borrowing capacity under the revolving credit facility	$	650.0	$	650.0
Outstanding borrowings under the revolving credit facility	76.0		75.0
Outstanding letters of credit	3.1		3.1
Unused portion of revolving credit facility	$	570.9	$	571.9

For further information on the outstanding letters of credit, see Note 8. The average interest rate for borrowings under our revolving credit facility was 2.16% during the first three months of 2013 and 1.84% during 2012.

We were in compliance with all covenants under our debt agreements at March 31, 2013 and at December 31, 2012.

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8.    Contractual Commitments and Contingencies

Information on certain contractual commitments and contingencies follows.

Litigation

We are involved in legal proceedings that are incidental to our business and include administrative or judicial actions seeking remediation under environmental laws, such as Superfund. Some of these legal proceedings relate to environmental matters and involve governmental authorities. 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 operation, financial condition, or cash flows.

As we previously disclosed, the United States Department of Justice has advised us that it is conducting a review of certain of our foreign business activities in relation to compliance with relevant U.S. economic sanctions programs and anti-corruption laws, as well as certain historical conduct in the domestic U.S. market, and has requested certain information in connection with such review. We are cooperating with the investigation. In connection with such cooperation, we have voluntarily agreed to provide certain information and are conducting an internal review for that purpose.

Environmental

In 2000, the Environmental Protection Agency (EPA) named us as a potentially responsible party (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. The Sauget Area 2 Sites PRPs received notice of approval from the EPA of the Remedial Investigation report on February 27, 2009, notice of approval of the October 2009 Human Health Risk Assessment on December 17, 2009, and approval of the Feasibility Study (FS) report on April 3, 2013. We have accrued our estimated proportional share of the expenses for the FS, as well as our best estimate of our proportional share of the remediation liability proposed in our ongoing discussions and submissions with the agencies involved. 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, 2013. The amount accrued for this site is not material.

The accruals for environmental remediation, dismantling, and decontamination at our most significant environmental remediation sites are shown below. At the former TEL plant site shown in the table below, we have completed significant environmental remediation, although we will be monitoring and treating the site for an extended period. The accruals below have been discounted to present value, and include an inflation factor in the estimate. The remaining environmental liabilities not shown separately below are not discounted.

	March 31, 2013									December 31, 2012
(in millions)	Former TEL Plant Site, Louisiana			Houston, Texas Plant Site			Superfund Site, Louisiana			Former TEL Plant Site, Louisiana			Houston, Texas Plant Site			Superfund Site, Louisiana
Accrual, discounted	$	5.5		$	6.0		$	3.2		$	5.6		$	6.1		$	3.2
Accrual, undiscounted	6.8			9.1			4.4			6.9			9.3			4.4
Discount rate for accrual	3		%	3		%	3		%	3		%	3		%	3		%
Expected future payments:
2013	$	0.6		$	0.7		$	0.0
2014	0.8			0.2			0.0
2015	0.6			0.2			0.2
2016	0.5			0.2			0.3
2017	0.6			0.2			0.3
Thereafter	3.7			7.6			3.6

Of the total accrual at the Houston, Texas plant site, $5.8 millionat both March 31, 2013 and December 31, 2012 relates to remediation. Of the total remediation, $5.6 million at both March 31, 2013 and December 31, 2012 relates to remediation of groundwater and soil.

13

We accrue for environmental remediation and monitoring activities for which costs can be reasonably estimated and are probable. These estimates are based on an assessment of the site, available clean-up methods, and prior experience in handling remediation. While we believe we are currently fully accrued for known environmental issues, it is possible that unexpected future costs could have a significant impact on our financial position, results of operation, and cash flows.

Our total accruals for environmental remediation were approximately $19.5 million at March 31, 2013 and $19.7 million at December 31, 2012. In addition to the accruals for environmental remediation, we also have accruals for dismantling and decommissioning costs of $500 thousand at both March 31, 2013 and December 31, 2012.

Letters of Credit and Guarantees

We have agreements with several financial institutions that provide guarantees for certain business activities of our subsidiaries, including performance, insurance, credit, lease, and customs and excise guarantees. The parent company provides guarantees of the subsidiaries' performance under these agreements and also provides a guarantee for repayment of lines of credit for subsidiaries in China and India. Guarantees outstanding under all of these agreements at March 31, 2013 are $14 million. At March 31, 2013, $3.1 million of these guarantees are secured by letters of credit, all of which were issued under the $100 million letter of credit sub-facility of our revolving credit facility. See Note 7 for further information. The letters of credit relate to insurance and performance guarantees. The maximum potential amount of future payments under all other guarantees not secured by letters of credit at March 31, 2013 is $21 million. We have no liability accrued for these guarantees, however there is $5.2 million drawn on lines of credit in China and India, which is recorded in Long-term debt, current portion on the Consolidated Balance Sheets. See Note 7 for further information. We accrue for potential liabilities when a future payment is probable and the range of loss can be reasonably estimated.

Expiration dates of the letters of credit and certain guarantees range from 2013 to 2021. Some of the guarantees have no expiration date. We renew letters of credit as necessary.

9.    Derivatives and Hedging Activities

We are exposed to certain risks arising from both our business operations and economic conditions. We primarily manage our exposures to a wide variety of business and operational risks through management of our core business activities.

We manage certain economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of our debt funding, as well as through the use of derivative financial instruments. Specifically, we have entered into interest rate swaps to manage our exposure to interest rate movements.

Our foreign operations expose us to fluctuations of foreign exchange rates. These fluctuations may impact the value of our cash receipts and payments as compared to our reporting currency, the U.S. Dollar. To manage this exposure, we sometimes enter into foreign currency forward contracts to minimize currency exposure due to cash flows from foreign operations.

Cash Flow Hedge of Interest Rate Risk

In January 2010, we entered into an interest rate swap to manage our exposure to interest rate movements on the mortgage loan and to reduce variability in interest expense. This mortgage loan interest rate swap terminated with the payoff of the mortgage loan on May 1, 2012. Further information on the mortgage loan is in Note 12 of our 2012 Annual Report. We also had an interest rate swap to manage our exposure to interest rate movements on the Foundry Park I construction loan and to add stability to capitalized interest expense. The Foundry Park I construction loan interest rate swap matured on January 1, 2010. Both interest rate swaps were designated and qualified as cash flow hedges. As such, the effective portion of changes in the fair value of the swaps was recorded in accumulated other comprehensive loss and is subsequently being reclassified into earnings in the period that the hedged forecasted transaction affects earnings. Any ineffective portion of changes in the fair value of the swap was recognized immediately in earnings.

The accumulated unrealized loss, net of tax, related to the fair value of the mortgage loan interest rate swap is recorded in accumulated other comprehensive loss in shareholders’ equity on the Consolidated Balance Sheets and amounted to approximately $1.5 million at March 31, 2013 and $1.7 million at December 31, 2012. The amount remaining in accumulated other comprehensive loss related to the mortgage loan interest rate swap is being recognized in the Consolidated Statements of Income over the original term of the mortgage loan agreement through January 29, 2015. Also recorded as a component of accumulated other comprehensive loss in shareholders’ equity on the Consolidated Balance Sheets is the accumulated loss related to the construction loan interest rate swap of approximately $2.5 million, net of tax, at both March 31, 2013 and December 31, 2012. The amount remaining in accumulated other comprehensive loss related to the construction loan interest rate swap is being recognized in the Consolidated Statements of Income over the depreciable life of the office building. Approximately $900 thousand, net of tax, currently recognized in accumulated other

14

comprehensive loss related to both the construction loan interest rate swap and the mortgage loan interest rate swap is expected to be reclassified into earnings over the next twelve months.

Non-designated Hedges

On June 25, 2009, we entered into an interest rate swap with Goldman Sachs in the notional amount of $97 million and with a maturity date of January 19, 2022 (Goldman Sachs interest rate swap). NewMarket entered into the Goldman Sachs interest rate swap in connection with the termination of a loan application and related rate lock agreement between Foundry Park I and Principal Commercial Funding II, LLC (Principal). When the rate lock agreement was originally executed in 2007, Principal simultaneously entered into an interest rate swap with a third party to hedge Principal’s exposure to fluctuation in the ten-year United States Treasury Bond rate. Upon the termination of the rate lock agreement on June 25, 2009, Goldman Sachs both assumed Principal’s position with the third party and entered into an offsetting interest rate swap with NewMarket. Under the terms of this interest rate swap, NewMarket is making fixed rate payments at 5.3075% and Goldman Sachs makes variable rate payments based on three-month LIBOR. We have collateralized this exposure through cash deposits posted with Goldman Sachs amounting to $33.8 million at March 31, 2013 and $37.7 million at December 31, 2012.

We have made an accounting policy election to not offset derivative fair value amounts with the fair value amounts for the right to reclaim cash collateral under our master netting arrangement. We elected not to use hedge accounting for the Goldman Sachs interest rate swap, and therefore, immediately recognize any change in the fair value of this derivative financial instrument directly in earnings.

*****

The table below presents the fair value of our derivative financial instruments, as well as their classification on the Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012.

Asset Derivatives

Liability Derivatives

March 31, 2013

December 31, 2012

March 31, 2013

December 31, 2012

(in thousands)

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Derivatives Not Designated as Hedging Instruments

Goldman Sachs interest rate swap

$

0

$

0

Accrued expenses and Other noncurrent liabilities

$

29,548

Accrued expenses and Other noncurrent liabilities

$

32,761

The total fair value reflected in the table above includes amounts recorded in accrued expenses of approximately$0.9 million at March 31, 2013 and $2.3 million at December 31, 2012 for the Goldman Sachs interest rate swap.

The tables below present the effect of our derivative financial instruments on the Consolidated Statements of Income.

Effect of Derivative Instruments on the Consolidated Statements of Income

Designated Cash Flow Hedges

(in thousands)

Derivatives in Cash Flow Hedging Relationship	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)					Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Three Months Ended March 31,						Three Months Ended March 31,							Three Months Ended March 31,
	2013		2012				2013			2012				2013		2012
Mortgage loan interest rate swap	$	0	$	(228	)	Interest and financing expenses	$	(327	)	$	(378	)		$	0	$	0
Construction loan interest rate swap	$	0	$	0		Cost of rental	$	(21	)	$	(21	)		$	0	$	0

15

Effect of Derivative Instruments on the Consolidated Statements of Income

Non-Designated Derivatives

(in thousands)

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in  Income on Derivatives	Amount of Gain (Loss) Recognized in  Income on Derivatives
		Three Months Ended March 31,
		2013		2012
Goldman Sachs interest rate swap	Other income, net	$	678	$	1,735

Credit-risk Related Contingent Features

The agreement we have with our current derivative counterparty contains a provision where we could be declared in default on our derivative obligation if repayment of indebtedness is accelerated by our lender(s) due to our default on the indebtedness.

As of March 31, 2013, the fair value of the derivative in a net liability position related to this agreement, which includes accrued interest but excludes any adjustment for nonperformance risk, was $29.4 million. We have minimum collateral posting thresholds with the counterparty and have posted cash collateral of $33.8 million as of March 31, 2013. If required, we could have settled our obligations under the agreement at the termination value of $29.4 million at March 31, 2013.

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			Derivative Instruments			Foreign Currency Translation Adjustments			Marketable Securities			Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2011	$	(76,416	)	$	(4,736	)	$	(17,944	)	$	364		$	(98,732	)
Other comprehensive income (loss) before reclassifications	(24,291		)	(330		)	7,567			676			(16,378		)
Amounts reclassified from accumulated other comprehensive loss	4,568			893			0			(1,040		)	4,421
Other comprehensive income (loss)	(19,723		)	563			7,567			(364		)	(11,957		)
Balance at December 31, 2012	(96,139		)	(4,173		)	(10,377		)	0			(110,689		)
Other comprehensive income (loss) before reclassifications	0			0			(18,280		)	0			(18,280		)
Amounts reclassified from accumulated other comprehensive loss	1,375			213			0			0			1,588
Other comprehensive income (loss)	1,375			213			(18,280		)	0			(16,692		)
Balance at March 31, 2013	$	(94,764	)	$	(3,960	)	$	(28,657	)	$	0		$	(127,381	)

16

The following table illustrates the amounts, net of tax, reclassified out of each component of accumulated other comprehensive loss and their location within the respective line items on the Consolidated Statements of Income.

(in thousands)	Amount Reclassified from Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss Component	Three Months Ended March 31,				Affected Line Item on the Consolidated Statements of Income
	2013		2012
Pension plans and other postretirement benefits:
Amortization of prior service cost	$	2	$	5	(a)
Amortization of actuarial net loss	1,363		1,031		(a)
Amortization of transition obligation	10		10		(a)
Total pension plans and other postretirement benefits	1,375		1,046
Derivative instruments:
Amortization of mortgage loan interest rate swap	200		231		Interest and financing expenses, net
Amortization of construction loan interest rate swap	13		13		Cost of rental
Total derivative instruments	213		244
Total reclassifications for the period	$	1,588	$	1,290

(a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 4 in this Form 10-Q and Note 19 in our 2012 Annual Report for further information.

11.    Fair Value Measurements

The following table provides information on assets and liabilities measured at fair value on a recurring basis. No events occurred during the three months ended March 31, 2013 requiring adjustment to the recognized balances of assets or liabilities which are recorded at fair value on a nonrecurring basis.

	Carrying Amount in Consolidated Balance Sheets				Fair Value Measurements Using
			Fair Value		Level 1		Level 2		Level 3
(in thousands)	March 31, 2013
Cash and cash equivalents	$	64,013	$	64,013	$	64,013	$	0	$	0
Cash deposit for collateralized interest rate swap	33,827		33,827		33,827		0		0
Interest rate swap liability	29,548		29,548		0		29,548		0
	December 31, 2012
Cash and cash equivalents	$	89,129	$	89,129	$	89,129	$	0	$	0
Cash deposit for collateralized interest rate swap	37,694		37,694		37,694		0		0
Interest rate swap liability	32,761		32,761		0		32,761		0

We determine the fair value of the derivative instruments shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. The analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs.

The fair value of the interest rate swap is determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates derived from observable market interest rate curves. In determining the fair value measurements, we incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk and the counterparties’ nonperformance risk.

17

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivatives utilizes Level 3 inputs. These Level 3 inputs include estimates of current credit spreads to evaluate the likelihood of default by both us and the counterparties to the derivatives. As of March 31, 2013 and December 31, 2012, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivatives and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivatives. Accordingly, we have determined that our derivative valuations should be classified in Level 2 of the fair value hierarchy.

We have made an accounting policy election to measure credit risk of any derivative financial instruments subject to master netting agreements on a net basis by counterparty portfolio.

Long-term debt – We record the value of our long-term debt at historical cost. 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 is determined by the market standard practice of modeling the contractual cash flows required under the debt instrument and discounting the cash flows back to present value at the appropriate credit-risk adjusted market interest rates. For floating rate debt obligations, we use forward rates, derived from observable market yield curves, to project the expected cash flows we will be required to make under the debt instrument. We then discount those cash flows back to present value at the appropriate credit-risk adjusted market interest rates. The fair value is categorized as Level 2.

	March 31, 2013				December 31, 2012
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current maturities	$	430,615	$	442,150	$	428,789	$	436,777

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12.    Consolidating Financial Information

The 4.10% senior notes are guaranteed on a senior unsecured basis by our existing and future domestic subsidiaries that guarantee our obligations under our revolving credit facility and any of our other indebtedness (Guarantor Subsidiaries). The subsidiary guarantees are joint and several obligations of the Guarantor Subsidiaries. The indenture governing the 4.10% senior notes includes a provision which allows for a Guarantor Subsidiary to be released of its obligations under the subsidiary guarantee under certain conditions. Those conditions include the sale or other disposition of all or substantially all of the Guarantor Subsidiary's assets in compliance with the indenture and the release or discharge of a Guarantor Subsidiary from its obligations as a guarantor under our revolving credit facility and all of our other indebtedness. The Guarantor Subsidiaries and the subsidiaries that do not guarantee the 4.10% senior notes (the Non-Guarantor Subsidiaries) are 100% owned by NewMarket Corporation (the Parent Company). The Guarantor Subsidiaries consist of the following:

Ethyl Corporation	Afton Chemical Corporation
Ethyl Asia Pacific LLC	Afton Chemical Asia Pacific LLC
Ethyl Canada Holdings, Inc.	Afton Chemical Canada Holdings, Inc.
Ethyl Export Corporation	Afton Chemical Japan Holdings, Inc.
Ethyl Interamerica Corporation	Afton Chemical Additives Corporation
Ethyl Ventures, Inc.	NewMarket Services Corporation
Interamerica Terminals Corporation	The Edwin Cooper Corporation
Afton Chemical Intangibles LLC	Old Town LLC
NewMarket Investment Company	NewMarket Development Corporation
Foundry Park I, LLC	Foundry Park II, LLC
Gamble's Hill, LLC	Gamble's Hill Lab, LLC
Gamble's Hill Landing, LLC	Gamble's Hill Third Street, LLC
Gamble's Hill Tredegar, LLC

We conduct all of our business through and derive essentially all of our income from our subsidiaries. Therefore, our ability to make payments on the 4.10% senior notes or other obligations is dependent on the earnings and the distribution of funds from our subsidiaries.

The following sets forth the Consolidating Statements of Income and Comprehensive Income for the three months ended March 31, 2013 and March 31, 2012; Consolidating Balance Sheets as of March 31, 2013 and December 31, 2012; and Condensed Consolidating Statements of Cash Flows for the three months ended March 31, 2013 and March 31, 2012 for the Parent Company, the Guarantor Subsidiaries, and the Non-Guarantor Subsidiaries. The financial information is based on our understanding of the SEC's interpretation and application of Rule 3-10 of the SEC Regulation S-X.

The financial information may not necessarily be indicative of results of operation or financial position had the Guarantor Subsidiaries or Non-Guarantor Subsidiaries operated as independent entities. The Parent Company accounts for investments in these subsidiaries using the equity method.

19

NewMarket Corporation and Subsidiaries
Consolidating Statements of Income and Comprehensive Income
Three Months Ended March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Revenue:
Net sales - product	$	0		$	211,694		$	348,056		$	0		$	559,750
Rental revenue	0			2,858			0			0			2,858
	0			214,552			348,056			0			562,608
Costs:
Cost of goods sold - product	0			102,006			289,337			0			391,343
Cost of rental	0			1,068			0			0			1,068
	0			103,074			289,337			0			392,411
Gross profit	0			111,478			58,719			0			170,197
Selling, general, and administrative expenses	1,684			21,792			17,465			0			40,941
Research, development, and testing expenses	0			21,952			9,069			0			31,021
Operating (loss) profit	(1,684		)	67,734			32,185			0			98,235
Interest and financing expenses, net	4,810			(610		)	909			0			5,109
Other income (expense), net	700			3			44			0			747
(Loss) income before income taxes and equity income of subsidiaries	(5,794		)	68,347			31,320			0			93,873
Income tax (benefit) expense	(2,013		)	19,819			8,232			0			26,038
Equity income of subsidiaries	71,616			0			0			(71,616		)	0
Net income	67,835			48,528			23,088			(71,616		)	67,835
Other comprehensive (loss) income	(16,692		)	(3,514		)	(14,001		)	17,515			(16,692		)
Comprehensive income	$	51,143		$	45,014		$	9,087		$	(54,101	)	$	51,143

20

NewMarket Corporation and Subsidiaries
Consolidating Statements of Income and Comprehensive Income
Three Months Ended March 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Total Consolidating Adjustments			Consolidated
Revenue:
Net sales - product	$	0		$	225,709		$	334,112	$	0		$	559,821
Rental revenue	0			2,858			0		0			2,858
	0			228,567			334,112		0			562,679
Costs:
Cost of goods sold - product	0			99,176			292,899		0			392,075
Cost of rental	0			1,068			0		0			1,068
	0			100,244			292,899		0			393,143
Gross profit	0			128,323			41,213		0			169,536
Selling, general, and administrative expenses	1,450			27,819			7,639		0			36,908
Research, development, and testing expenses	0			21,120			6,775		0			27,895
Operating (loss) profit	(1,450		)	79,384			26,799		0			104,733
Interest and financing expenses, net	3,377			87			1,018		0			4,482
Loss on early extinguishment of debt	3,221			0			0		0			3,221
Other income (expense), net	1,744			(31		)	60		0			1,773
(Loss) income before income taxes and equity income of subsidiaries	(6,304		)	79,266			25,841		0			98,803
Income tax (benefit) expense	(2,584		)	29,124			5,716		0			32,256
Equity income of subsidiaries	70,267			0			0		(70,267		)	0
Net income	66,547			50,142			20,125		(70,267		)	66,547
Other comprehensive (loss) income	8,085			2,778			4,730		(7,508		)	8,085
Comprehensive income	$	74,632		$	52,920		$	24,855	$	(77,775	)	$	74,632

21

NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	3		$	4,141		$	59,869		$	0		$	64,013
Trade and other accounts receivable, net	3,562			121,399			206,194			0			331,155
Amounts due from affiliated companies	21,824			78,413			16,809			(117,046		)	0
Inventories	0			124,731			196,608			0			321,339
Deferred income taxes	2,079			4,690			682			0			7,451
Prepaid expenses and other current assets	10,591			21,447			2,218			0			34,256
Total current assets	38,059			354,821			482,380			(117,046		)	758,214
Amounts due from affiliated companies	55,928			111,833			0			(167,761		)	0
Property, plant, and equipment, at cost	0			840,821			237,837			0			1,078,658
Less accumulated depreciation and amortization	0			584,102			133,962			0			718,064
Net property, plant, and equipment	0			256,719			103,875			0			360,594
Investment in consolidated subsidiaries	862,545			0			0			(862,545		)	0
Prepaid pension cost	0			0			12,800			0			12,800
Deferred income taxes	51,155			0			6,909			(4,104		)	53,960
Other assets and deferred charges	42,285			23,863			1,295			0			67,443
Intangibles (net of amortization) and goodwill	0			22,031			6,347			0			28,378
Total assets	$	1,049,972		$	769,267		$	613,606		$	(1,151,456	)	$	1,281,389
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	25		$	72,851		$	42,799		$	0		$	115,675
Accrued expenses	10,579			37,399			17,571			0			65,549
Dividends payable	10,282			0			0			0			10,282
Book overdraft	0			5,149			0			0			5,149
Amounts due to affiliated companies	45,626			46,097			25,323			(117,046		)	0
Long-term debt, current portion	0			0			5,193			0			5,193
Income taxes payable	4,955			5,789			14,550			0			25,294
Total current liabilities	71,467			167,285			105,436			(117,046		)	227,142
Long-term debt	425,422			0			0			0			425,422
Amounts due to affiliated companies	0			63,954			103,807			(167,761		)	0
Other noncurrent liabilities	134,514			41,706			38,140			(4,104		)	210,256
Total liabilities	631,403			272,945			247,383			(288,911		)	862,820
Shareholders' equity:
Common stock and paid-in capital	0			388,282			71,322			(459,604		)	0
Accumulated other comprehensive loss	(127,381		)	(22,281		)	(50,056		)	72,337			(127,381		)
Retained earnings	545,950			130,321			344,957			(475,278		)	545,950
Total shareholders' equity	418,569			496,322			366,223			(862,545		)	418,569
Total liabilities and shareholders' equity	$	1,049,972		$	769,267		$	613,606		$	(1,151,456	)	$	1,281,389

22

NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
December 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	5,001		$	7,202		$	76,926		$	0		$	89,129
Trade and other accounts receivable, net	4,346			116,865			175,844			0			297,055
Amounts due from affiliated companies	0			142,277			33,282			(175,559		)	0
Inventories	0			125,171			197,503			0			322,674
Deferred income taxes	2,555			5,204			693			0			8,452
Prepaid expenses and other current assets	66			16,253			1,866			0			18,185
Total current assets	11,968			412,972			486,114			(175,559		)	735,495
Amounts due from affiliated companies	58,935			56,326			0			(115,261		)	0
Property, plant, and equipment, at cost	0			833,352			237,615			0			1,070,967
Less accumulated depreciation and amortization	0			578,183			134,413			0			712,596
Net property, plant, and equipment	0			255,169			103,202			0			358,371
Investment in consolidated subsidiaries	895,029			0			0			(895,029		)	0
Prepaid pension cost	0			0			12,710			0			12,710
Deferred income taxes	53,087			0			8,451			(6,415		)	55,123
Other assets and deferred charges	46,286			23,670			2,051			0			72,007
Intangibles (net of amortization) and goodwill	0			23,784			6,758			0			30,542
Total assets	$	1,065,305		$	771,921		$	619,286		$	(1,192,264	)	$	1,264,248
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	206		$	75,483		$	43,609		$	0		$	119,298
Accrued expenses	8,367			51,577			19,117			0			79,061
Book overdraft	0			3,906			0			0			3,906
Amounts due to affiliated companies	91,403			55,437			28,719			(175,559		)	0
Long-term debt, current portion	0			0			4,382			0			4,382
Income taxes payable	0			55			9,969			0			10,024
Total current liabilities	99,976			186,458			105,796			(175,559		)	216,671
Long-term debt	424,407			0			0			0			424,407
Amounts due to affiliated companies	0			8,024			107,237			(115,261		)	0
Other noncurrent liabilities	138,717			49,280			39,383			(6,415		)	220,965
Total liabilities	663,100			243,762			252,416			(297,235		)	862,043
Shareholders' equity:
Common stock and paid-in capital	721			388,282			71,322			(459,604		)	721
Accumulated other comprehensive loss	(110,689		)	(18,767		)	(36,055		)	54,822			(110,689		)
Retained earnings	512,173			158,644			331,603			(490,247		)	512,173
Total shareholders' equity	402,205			528,159			366,870			(895,029		)	402,205
Total liabilities and shareholders' equity	$	1,065,305		$	771,921		$	619,286		$	(1,192,264	)	$	1,264,248

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NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Three Months Ended March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities	$	92,885		$	76,432		$	(174	)	$	(142,015	)	$	27,128
Cash flows from investing activities:
Capital expenditures	0			(8,383		)	(7,726		)	0			(16,109		)
Deposits for interest rate swap	(2,982		)	0			0			0			(2,982		)
Return of deposits for interest rate swap	6,850			0			0			0			6,850
Payments on settlement of interest rate swap	(2,617		)	0			0			0			(2,617		)
Receipts from settlement of interest rate swap	82			0			0			0			82
Cash provided from (used in) investing activities	1,333			(8,383		)	(7,726		)	0			(14,776		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000			0			0			0			1,000
Net borrowings (repayments) under lines of credit	0			0			811			0			811
Dividends paid	(11,998		)	(86,585		)	(9,916		)	96,501			(11,998		)
Debt issuance costs	(1,115		)	0			0			0			(1,115		)
Repurchases of common stock	(22,508		)	0			0			0			(22,508		)
Issuance of intercompany note payable, net	0			(3,135		)	3,135			0			0
Repayment of intercompany note payable, net	3,006			(3,006		)	0			0			0
Financing from affiliated companies	(67,601		)	22,087			0			45,514			0
Cash provided from (used in) financing activities	(99,216		)	(70,639		)	(5,970		)	142,015			(33,810		)
Effect of foreign exchange on cash and cash equivalents	0			(471		)	(3,187		)	0			(3,658		)
(Decrease) increase in cash and cash equivalents	(4,998		)	(3,061		)	(17,057		)	0			(25,116		)
Cash and cash equivalents at beginning of year	5,001			7,202			76,926			0			89,129
Cash and cash equivalents at end of period	$	3		$	4,141		$	59,869		$	0		$	64,013

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NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Three Months Ended March 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities	$	(19,495	)	$	75,997		$	12,483		$	(5,895	)	$	63,090
Cash flows from investing activities:
Capital expenditures	0			(5,044		)	(2,388		)	0			(7,432		)
Deposits for interest rate swap	(5,079		)	0			0			0			(5,079		)
Return of deposits for interest rate swap	8,340			0			0			0			8,340
Payments on settlement of interest rate swap	(2,574		)	0			0			0			(2,574		)
Receipts from settlement of interest rate swap	100			0			0			0			100
Cash provided from (used in) investing activities	787			(5,044		)	(2,388		)	0			(6,645		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	(22,000		)	0			0			0			(22,000		)
Repayment of Foundry Park I mortgage loan	0			(715		)	0			0			(715		)
Net borrowings (repayments) under lines of credit	0			0			(223		)	0			(223		)
Dividends paid	(10,054		)	(38		)	(5,857		)	5,895			(10,054		)
Debt issuance costs	(2,351		)	0			0			0			(2,351		)
Financing from affiliated companies	53,113			(53,113		)	0			0			0
Cash provided from (used in) financing activities	18,708			(53,866		)	(6,080		)	5,895			(35,343		)
Effect of foreign exchange on cash and cash equivalents	0			555			719			0			1,274
(Decrease) increase in cash and cash equivalents	0			17,642			4,734			0			22,376
Cash and cash equivalents at beginning of year	17			9,653			40,700			0			50,370
Cash and cash equivalents at end of period	$	17		$	27,295		$	45,434		$	0		$	72,746

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

Forward-Looking Statements

The following discussion 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, availability of raw materials and transportation systems; supply disruptions at single-sourced facilities; ability to respond effectively to technological changes in our industry; failure to protect our intellectual property rights; hazards common to chemical businesses; occurrence or threat of extraordinary events, including natural disasters and terrorist attacks; competition from other manufacturers; sudden or sharp raw materials price increases; gain or loss of significant customers; risks related to operating outside of the United States; the impact of fluctuations in foreign exchange rates; political, economic, and regulatory factors concerning our products; future governmental regulation; resolution of environmental liabilities or legal proceedings; inability to complete future acquisitions or successfully integrate future acquisitions into our business; and other factors detailed from time to time in the reports that NewMarket files with the Securities and Exchange Commission, including the risk factors in Item 1A. “Risk Factors” of our 2012 Annual Report, which is available to shareholders upon request.

You should keep in mind that any forward-looking statement made by us in this discussion 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 discussion or elsewhere might not occur.

Overview

Our business performed extremely well during the first three months 2013, as the only three month period with better operating profit results was the first three months 2012. The petroleum additives business posted the second highest three month performance ever, excluding the third quarter 2011 when a legal settlement was recognized. In many respects, the three months 2013 was very similar to three months 2012. Revenue and product shipments were essentially the same, as was the gross profit margin. During three months 2013, we had higher spending in research, development, and testing, as well as selling, general, and administrative expenses in support of our business. Our net income and income taxes benefited from the retroactive reinstatement of the research and development credit. In addition, our cash flow generation was sufficient to fund operations, including increased working capital needs. We continue to run our business for the long-run with the goal of helping our customers succeed in their marketplace.

Also of note during the first three months 2013 was our repurchase of $23.0 million of our common stock, and the payment of a 90 cent per share dividend, which was a 20% increase from our prior regular dividend.

During March 2013, we registered, under the Securities Act of 1933, our previously unregistered 4.10% senior notes, which we issued in December 2012, and commenced an offer to exchange the outstanding unregistered notes for an equal aggregate principal amount of the registered 4.10% senior notes.

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Results of Operation

Revenue

Our consolidated revenue for the three months2013 totaled $562.6 million, which was consistent with the three months2012 level of $562.7 million. The following table shows revenue by segment and product line.

	Three Months Ended March 31,
(in millions)	2013		2012
Petroleum additives
Lubricant additives	$	452.7	$	444.6
Fuel additives	105.7		113.1
Total	558.4		557.7
Real estate development	2.9		2.9
All other	1.3		2.1
Consolidated revenue	$	562.6	$	562.7

Petroleum Additives Segment

The primary regions in which we operate include North America, Latin America, Asia Pacific, and the Europe/Middle East/Africa/India (EMEAI) regions. The percentage of revenue generated in the regions remains fairly consistent when comparing the first three months 2013 with the first three months 2012, as well as with prior year periods, although there is some fluctuation between regions on a period to period basis. In addition, the percentage of lubricant additives sales and fuel additives sales is also substantially consistent between periods.

Petroleum additives net sales for the first three months2013 of $558.4 million increased $0.7 million, or approximately 0.1%, from $557.7 million for the first three months2012. From a regional perspective, both EMEAI and Asia Pacific reflected increased revenue when comparing the two three month periods, while both North America and Latin America were lower for three months 2013 as compared to three months 2012. Each of these changes was minor. The small increase in revenue when comparing the two three months periods resulted from favorable product shipments of lubricant additives, substantially offset by unfavorable shipments of fuel additives, as well as lower selling prices and an unfavorable foreign currency impact. While our overall petroleum additives product shipments were substantially even between the two years, product shipments in all regions, except North America, were slightly higher. When comparing the two periods, the U.S. Dollar weakened against the European Union Euro and the British Pound Sterling resulting in a favorable foreign currency impact on revenue, but that impact was more than offset by the strengthening of the U.S. Dollar against the Japanese Yen resulting in an unfavorable foreign currency impact on revenue.

The table below details the approximate components of the increase between the first three months of 2013 and 2012 periods.

(in millions)	Three Months
Period ended March 31, 2012	$	557.7
Lubricant additives shipments	15.9
Fuel additive shipments	(5.3		)
Selling prices, including changes in customer mix	(8.5		)
Foreign currency impact, net	(1.4		)
Period ended March 31, 2013	$	558.4

Real Estate Development Segment

The revenue reflected in the table above for both three months 2013 and three months 2012 for the real estate development segment represents the rental of an office building, which was constructed by Foundry Park I.

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All Other

The “All other” category includes the operations of the TEL business and certain contract manufacturing performed by Ethyl.

Segment Operating Profit

NewMarket evaluates the performance of the petroleum additives business and the real estate development business based on segment operating profit. NewMarket Services Corporation (NewMarket Services) 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 table below reports segment operating profit for three months ended March 31, 2013 and March 31, 2012.

	Three Months Ended March 31,
(in millions)	2013			2012
Petroleum additives	$	102.0		$	107.2
Real estate development	$	1.8		$	1.8
All other	$	(0.4	)	$	0.5

Petroleum Additives Segment

The petroleum additives operating profit decreased $5.2 million when comparing three months2013 to three months2012. The decrease in profitability was across both of our major product lines, lubricant additives and fuel additives. The operating profit margin was 18.3% for three months 2013 and 19.2% for three months 2012. For the rolling four quarters ended March 31, 2013, the operating profit margin was 16.7%, which is in line with our expectations of the performance of our business over the long-term. While operating profit margins will fluctuate from quarter to quarter due to multiple factors, we do not operate our business differently from quarter to quarter. We believe the fundamentals of our business and industry are unchanged. We continue to focus on developing and delivering innovative, technology-driven solutions to our customers.

Gross profit results were substantially the same when comparing three months 2013 to three months 2012 with a small increase of $1.2 million for the 2013 period. Cost of sales as a percentage of revenue remains fairly consistent between the two three month periods at 70.0% for three months 2013 and 70.2% for three months 2012.

When comparing three months 2013 and three months 2012, total product shipments were about even, with higher shipments of lubricant additives products offset by lower shipments of fuel additive products. Nonetheless, increased volumes of higher-valued products resulted in a favorable variance in our gross profit. In addition, raw material costs were favorable. These favorable components of gross profit were substantially offset by unfavorable variances in selling prices, as discussed in the Revenue section above, as well as manufacturing conversion costs.

Selling, general, and administrative expenses (SG&A) for three months 2013 was $3.2 million, or 10.3% higher, as compared to three months 2012. SG&A as a percentage of revenue was 6.2% for three months 2013 and 5.6% for three months 2012. Our SG&A costs are mainly personnel-related and include salaries, benefits, and other costs associated with our workforce. As our workforce has increased in number to support our growing worldwide operations, these costs have also risen, which occurred when comparing the two three month periods. In addition to the personnel-related impacts, professional fees, as well as health, safety, and environmental fees have also increased in 2013 over 2012 three months levels.

Research, development, and testing expenses (R&D) for three months 2013 increased $3.1 million, or 11.0%, from three months 2012 levels. As a percentage of revenue, R&D was 5.5% for three months 2013 and 5.0% for three months 2012. Our approach to R&D spending, 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 spending includes personnel-related costs, as well as internal and external testing of our products. The increase between the two periods was substantially in the lubricant additives product line and includes efforts to support the development of additives that meet our customers' needs, as well as new standards, and to expand into new solution areas. We expect R&D costs for the full year in 2013 will increase over the 2012 level.

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The following discussion references the Consolidated Financial Statements beginning on page 3 of this Quarterly Report on Form 10-Q.

Interest and Financing Expenses

Interest and financing expenses were $5.1 million for three months2013 and $4.5 million for three months2012. The increase in interest and financing expenses between the two periods of 2013 and 2012 primarily resulted from higher outstanding average debt, substantially offset by a lower average interest rate.

Loss on Early Extinguishment of Debt

We recorded a $3.2 million loss on the early extinguishment of debt in three months 2012 related to the recognition of $0.5 million of unamortized deferred financing costs on our previous revolving credit facility, as well as $2.7 million from a portion of the early redemption premium on the 7.125% senior notes. These amounts were a non-cash charge during three months 2012.

Other Income, Net

Other income, net for three months2013 was $0.7 million, while three months2012 was $1.8 million. The amounts for both 2013 and 2012 primarily reflect the gain on a derivative instrument representing an interest rate swap recorded at fair value through earnings. See Note 9 for additional information on the interest rate swap.

Income Tax Expense

Income tax expense was $26.0 million for three months2013 and $32.3 million for three months2012. The effective tax rate was 27.7% for three months2013, while three months2012 was 32.6%. The decrease in income before income tax expense resulted in a decrease of $1.6 million in income taxes, while the lower effective tax rate in 2013 as compared to 2012 resulted in a decrease of $4.7 million in income tax expense when comparing the two three months periods.

The effective tax rate for each year includes the benefit of higher income in foreign jurisdictions with lower tax rates, as well as a substantial benefit from the domestic manufacturing tax deduction. The 2013 period reflects the entire 2012 research and development credit which was signed into law in January 2013, as well as the first three months 2013 research and development credit, neither of which is included in the three months 2012 period.

Cash Flows, Financial Condition, and Liquidity

Cash and cash equivalents at March 31, 2013 were $64.0 million, which was a decrease of $25.1 million since December 31, 2012 and included a $3.7 millionunfavorable impact from foreign currency translation.

Our cash and cash equivalents held by our foreign subsidiaries amounted to approximately $63 million at March 31, 2013 and $80 million at December 31, 2012. 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, research and development 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 Internal Revenue Code. 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 of $9.7 million for the three months ended March 31, 2013 and $5.9 million for the three months ended March 31, 2012.

We expect that cash from operations, together with borrowing available under our revolving credit facility, will continue to be sufficient to cover our operating expenses for the foreseeable future.

Cash Flows – Operating Activities

Cash flows provided from operating activities for the three months2013 were $27.1 million and included a decrease of $55.7 million due to higher working capital levels, including higher accounts receivable and prepaid expenses, as well as lower accrued expenses, which were partially offset by higher dividends payable and income taxes payable. The increase in accounts receivable is primarily due to higher sales levels when comparing the first quarter 2013 with the fourth quarter 2012, while higher prepaid expenses as well as the increase in dividends payable represent the funding of the dividends in March 2013, but the payment by the transfer agent in April 2013. The decrease in accrued expenses primarily reflects payments related to customer rebates made during three months 2013. The increase in income taxes payable reflects taxes due on earnings, which will be paid during the second quarter 2013.

29

We had working capital of $531.1 million at March 31, 2013 and $518.8 million at December 31, 2012. The current ratio was 3.34 to 1 at March 31, 2013 and 3.39 to 1 at December 31, 2012.

Cash Flows – Investing Activities

Cash used in investing activities was $14.8 million during three months2013 and included $16.1 million for capital expenditures. Also included in investing activities was a net return of deposit of $3.9 million and a net settlement payment of $2.5 million related to the Goldman Sachs interest rate swap. Further information on the interest rate swap is discussed in Note 9. We estimate our total capital spending during 2013 will be approximately $80 million to $100 million. We expect to continue to finance capital spending through cash on hand and cash provided from operations, together with borrowing available under our $650 million revolving credit facility.

Cash Flows – Financing Activities

Cash used in financing activities during three months2013 amounted to $33.8 million. Borrowings under our revolving credit facility increased by $1.0 million, while amounts outstanding under lines of credit increased $0.8 million. We incurred $1.1 million in debt issuance costs related to the 4.10% senior notes. We also paid $12.0 million to fund dividends and $22.5 million for the repurchase of common stock during three months2013.

We had total long-term debt, including the current portion, of $430.6 million at March 31, 2013, representing an increase of approximately $1.8 million in our total debt since December 31, 2012.

At March 31, 2013, in addition to the revolving credit facility, which is discussed below, we had outstanding senior notes in the aggregate principal amount of $350 million that bear interest at a fixed rate of 4.10% and are due in 2022. During March 2013, we registered these 4.10% senior notes under the Securities Act of 1933 and commenced an offer to exchange the previously unregistered 4.10% senior notes that were outstanding at December 31, 2012 for an equal aggregate principal amount.

Two of our subsidiaries also have short-term lines of credit for working capital purposes. The line of credit for one of our subsidiaries in India is for 110 million rupees and has an outstanding balance of $1.6 million (90 million rupees) at March 31, 2013. The line of credit for one of our subsidiaries in China is for $10 million with an outstanding balance of $3.6 million at March 31, 2013.

Revolving Credit Facility – At March 31, 2013, we had a $650 million multicurrency revolving credit facility, with a $100 million sublimit for multicurrency borrowings, a $100 million sublimit for letters of credit, and a $20 million sublimit for swingline loans. The agreement includes an expansion feature, which allows us, subject to certain conditions, to request an increase to the aggregate amount of the revolving credit facility or obtain incremental term loans in an amount up to $150 million. Borrowings bear interest at variable rates. The revolving credit facility matures on March 14, 2017.

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

(in millions)	March 31, 2013		December 31, 2012
Maximum borrowing capacity under the revolving credit facility	$	650.0	$	650.0
Outstanding borrowings under the revolving credit facility	76.0		75.0
Outstanding letters of credit	3.1		3.1
Unused portion of revolving credit facility	$	570.9	$	571.9

Both the 4.10% senior notes and the revolving credit facility contain covenants, representations, and events of default that management considers typical of credit agreements of this nature. The more restrictive and significant financial covenants under the revolving credit facility include:

•A consolidated Leverage Ratio (as defined in the credit agreement) of no more than 3.00 to 1.00; and

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

At March 31, 2013, the Leverage Ratio was 1.13 and the Interest Coverage Ratio was 30.40, while at December 31, 2012 the Leverage Ratio was 1.11 and the Interest Coverage Ratio was 32.44. We were in compliance with all covenants under both the revolving credit facility and the 4.10% senior notes at March 31, 2013 and December 31, 2012.

As a percentage of total capitalization (total debt and shareholders’ equity), our total debt percentage decreased from 51.6% at December 31, 2012 to 50.7% at March 31, 2013. The change in the percentage was primarily the result of an increase in shareholders’ equity. The increase in shareholders’ equity reflects our earnings, partially offset by the impact

30

of dividend payments and stock repurchases. Normally, we repay any outstanding long-term debt with cash from operations or refinancing activities.

Other Matters

During April 2013, we made the decision to discontinue the production of a fuel additive at our Ethyl Canada facility. While the facility will remain in operation, the workforce will be reduced to support the remaining operations. As a result of this action, we recorded a reserve of $1.5 million during three months 2013 reflecting the impairment of the affected assets, as well as contractual severance. During the second quarter 2013, we will determine and recognize other costs associated with this action. We do not expect the total reserve or charge to operations to be material to our financial statements.

Critical Accounting Policies and Estimates

This report, as well as the 2012 Annual Report on Form 10-K, includes a discussion of our accounting principles, as well as methods and estimates used in the preparation of our financial statements. We believe these discussions and financial statements fairly represent the financial position and results of operation of our company in all material respects. The purpose of this portion of our discussion is to further emphasize some of the more critical areas where a significant change in facts and circumstances in our operating and financial environment might cause a change in reported financial results.

Intangibles (Net of Amortization) and Goodwill

We have certain identifiable intangibles, as well as goodwill, amounting to $28.4 million at March 31, 2013. These intangibles relate to our petroleum additives business and, except for the goodwill, are being amortized over periods with up to approximately seventeen years of remaining life. We continue to assess the market related to these intangibles, as well as their specific values, and have concluded the values and amortization periods are appropriate. We also evaluate these intangibles for any potential impairment when significant events or circumstances occur that might impair the value of these assets. These evaluations continue to support the values at which these identifiable intangibles are carried on our financial statements. In addition, our reporting unit with goodwill is not at risk of failing the goodwill impairment test. However, if conditions were to substantially deteriorate in the petroleum additives market, it could possibly cause a decrease in the estimated useful lives of the intangible assets or result in a noncash write-off of all or a portion of the intangibles’ carrying amount. A reduction in the amortization period would have no effect on cash flows. We do not anticipate such a change in the market conditions in the near term.

Environmental and Legal Proceedings

We believe our environmental accruals are appropriate for the exposures and regulatory guidelines under which we currently operate. While we currently do not anticipate significant changes to the many factors that could impact our environmental requirements, we continue to keep our accruals consistent with these requirements as they change.

While it is not possible to predict or determine with certainty the outcome of any legal proceeding, it is our opinion, based on our current knowledge, that we will not experience any material adverse effects on our results of operation, cash flows, or financial condition as a result of any pending or threatened proceeding.

Pension Plans and Other Postretirement Benefits

We use assumptions to record the impact of the pension and postretirement benefit plans in the financial statements. These assumptions include the discount rate, expected long-term rate of return on plan assets, rate of compensation increase, and health-care cost trend rate. A change in any one of these assumptions could cause different results for the plans, and therefore impact our results of operation, cash flows, and financial condition. We develop these assumptions after considering available information that we deem relevant. Information is provided on the pension and postretirement plans in Note 19 of the 2012 Annual Report. In addition, further disclosure on the effect of changes in these assumptions is provided in the “Financial Position and Liquidity” section of Part II, Item 7 of the 2012 Annual Report.

Income Taxes

We file United States, foreign, and local income tax returns, under which assumptions may be made to determine the deductibility of certain costs. We make estimates related to the impact of tax positions taken on our financial statements when we believe the tax position is more likely than not to be upheld on audit. We do not provide for income taxes on earnings considered to be indefinitely reinvested abroad. In addition, we make certain assumptions in the determination of the estimated future recovery of deferred tax assets.

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Outlook

We are very pleased with our first quarter results, which was one of the best quarters for petroleum additives in our history.  That performance reinforces our confidence that our customer-focused approach to the market is the path on which to continue. We believe the fundamentals of how we run our business - a safety-first culture, customer-focused solutions, technology-driven product offerings, world-class supply chain capability, and a regional organizational structure to better understand our customers' needs - will continue to pay dividends to all of our stakeholders. 

We continue to have expectations that our petroleum additives segment will deliver improved results in 2013, after having posted record operating profit for each of the last several years. While our total shipments for 2012 contracted some due to many factors, including the global economy, we expect that petroleum additives shipment demand will continue to grow at an average annual rate of 1% - 2% over the next five years, as there has been no significant change in the positive fundamentals of the business.  We plan to exceed the industry growth rate.  Over the past several years, we have made significant investments to expand our capabilities around the world.  These investments have been in people, technology and technical centers, and production capacity.  We intend to use these new capabilities to improve our ability to deliver the goods and service that our customers value and to expand our business and improve profits.  We will continue to expand our capabilities to provide even better service, technology, and customer solutions. 

As a global company operating in many countries around the world, we are not immune to world economic conditions.  Western Europe and the Euro are significant factors in our business and financial results, as is the general economic activity around the world.  Our expectations for 2013 include the assumption of modest economic recovery around the world.  We did not see that recovery in any measurable fashion in the first quarter, but continue to plan our business around a modest growth assumption.

Our business continues to generate significant amounts of cash beyond what is necessary for the expansion and growth of our current product lines.  We regularly review the many internal opportunities which we have to utilize this cash, both from a geographic and product line perspective.  We continue our efforts in investigating potential acquisitions as both a use for this cash and to generate shareholder value.  Our primary focus in the acquisition area remains on the petroleum additives industry.  It is our view that this industry will provide the greatest opportunity for a good return on our investment while minimizing risk.  We remain focused on this strategy and will evaluate any future opportunities.  Nonetheless, we are patient in this pursuit and intend to make the right acquisition when the opportunity arises.  We will continue to evaluate all alternative uses of that 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, 2013, there were no significant changes in our market risk from the information provided in the 2012 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. Our controls and procedures include written policies and procedures, careful selection and training of qualified personnel, and an internal audit program. We use third-party firms, separate from our independent registered public accounting firm, to assist with internal audit services.

We work closely with the business groups, operations personnel, and information technology to ensure transactions are recorded properly. Environmental and legal staff are consulted to determine the appropriateness of our environmental and legal liabilities for each reporting period. We regularly review the regulations and rule changes that affect our financial disclosures.

Our disclosure control procedures include signed representation letters from our regional officers, as well as senior management.

We have formed a Financial Disclosure Committee (the committee), which is made up of the president of Afton Chemical Corporation, the general counsel of NewMarket, and the controller of NewMarket. The committee, as well as regional management, makes representations with regard to the financial statements that, to the best of their knowledge, the report does not contain any misstatement of a material fact or omit a material fact that is necessary to make the statements not misleading with respect to the periods covered by the report.

The committee and the regional management also represent, to the best of their knowledge, that the financial statements and other financial information included in the report fairly present, in all material respects, the financial condition, results of operation, and cash flows of the company as of and for the periods presented in the report.

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 defined under 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 are effective.

Changes in Internal Controls Over Financial Reporting

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, during the quarter ended March 31, 2013, that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

33

PART II – OTHER INFORMATION

ITEM 1.     Legal Proceedings

We are involved in legal proceedings that are incidental to our business and include administrative or judicial actions seeking remediation under environmental laws, such as Superfund. Some of these legal proceedings relate to environmental matters and involve governmental authorities. For further information, see “Environmental” in Note 8.

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 operation, financial condition, or cash flows.

As we previously disclosed, the United States Department of Justice has advised us that it is conducting a review of certain of our foreign business activities in relation to compliance with relevant U.S. economic sanctions programs and anti-corruption laws, as well as certain historical conduct in the domestic U.S. market, and has requested certain information in connection with such review. We are cooperating with the investigation. In connection with such cooperation, we have voluntarily agreed to provide certain information and are conducting an internal review for that purpose.

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

On July 17, 2012, our Board of Directors approved a share repurchase program authorizing management to repurchase up to $250 million of NewMarket Corporation's outstanding common stock until December 31, 2014, 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 $227 million remained available under the 2012 authorization at March 31, 2013. The following table outlines the purchases during the first quarter 2013 under this authorization.

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	0	$	0.00	0	$	250,000,000
February 1 to February 28	41,400	249.84		41,400	239,656,760
March 1 to March 31	49,400	256.78		49,400	226,971,959
Total	90,800	$	253.61	90,800	$	226,971,959

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 April 27, 2012 (incorporated by reference to Exhibit 3.2 to Form 8-K (File No. 1- 32190) filed April 30, 2012)
Exhibit 10.1	Consulting Agreement, dated March 28, 2013, between NewMarket Corporation and C.S. Warren Huang (incorporated by reference to Exhibit 10.1 to Form 8-K (File No. 1-32190) filed April 9, 2013)*
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 David A. Fiorenza
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 David A. Fiorenza
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.

34

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 29, 2013	By: /s/ D. A. Fiorenza
	David A. Fiorenza
	Vice President and
	Chief Financial Officer
	(Principal Financial Officer)
Date: April 29, 2013	By: /s/ Wayne C. Drinkwater
	Wayne C. Drinkwater
	Controller
	(Principal Accounting Officer)

35

EXHIBIT INDEX

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 David A. Fiorenza
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 David A. Fiorenza
Exhibit 101	XBRL Instance Document and Related Items

36

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, 2013 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 29, 2013
	By:	/s/ Thomas E. Gottwald
	Thomas E. Gottwald
	President and Chief Executive Officer

EX-31.B

Exhibit 31(b)

CERTIFICATION

I, David A. Fiorenza, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 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 29, 2013
	By:	/s/ D.A. Fiorenza
	David A. Fiorenza
	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, 2013 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; 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
President and Chief Executive Officer
April 29, 2013

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, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David A. Fiorenza, 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; 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/ D.A. Fiorenza
David A. Fiorenza
Vice President and Chief Financial Officer
April 29, 2013

XML

Segment Information (Segment Operating Profit) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2013 Petroleum Additives [Member]	Mar. 31, 2012 Petroleum Additives [Member]	Mar. 31, 2013 Real Estate Development [Member]	Mar. 31, 2012 Real Estate Development [Member]	Mar. 31, 2013 All Other [Member]	Mar. 31, 2012 All Other [Member]	Mar. 31, 2013 Unallocated Amount to Segment [Member]	Mar. 31, 2012 Unallocated Amount to Segment [Member]	Mar. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2012 Revolving Credit Facility [Member]	Mar. 14, 2012 Revolving Credit Facility [Member]	Dec. 31, 2011 Revolving Credit Facility [Member]	Apr. 16, 2012 7.125% Senior Notes [Member] Senior Notes [Member]
Segment Information [Line Items]
Segment operating profit	$ 103,417,000		$ 109,462,000		$ 102,028,000	$ 107,154,000	$ 1,790,000	$ 1,789,000	$ (401,000)	$ 519,000
Corporate, general, and administrative expenses	(40,941,000)		(36,908,000)								(5,216,000)	(5,505,000)
Interest and financing expenses, net	(5,109,000)		(4,482,000)
Gain on interest rate swap agreement	678,000	[1]	1,735,000	[1]
Loss on early extinguishment of debt	0	[2]	(3,221,000)	[2]
Other income, net	103,000		814,000
Income before income tax expense	93,873,000		98,803,000
Maximum borrowing capacity under the revolving credit facility													$ 650,000,000	$ 650,000,000.0	$ 650,000,000	$ 300,000,000
Term of credit facility, years													5 years
Senior notes, interest rate																	7.125%

[1] The gain on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

[2] In March 2012, we entered into a $650 million five-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

XML

Derivatives and Hedging Activities (Effect Of Derivative Instruments On The Consolidated Statements Of Income Designated Cash Flow Hedges) (Details) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Construction Loan Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$ 0	$ 0
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Construction Loan Interest Rate Swap [Member] | Cost of rental [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(21)	(21)
Mortgage Loan Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	0	(228)
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Mortgage Loan Interest Rate Swap [Member] | Interest and financing expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (327)	$ (378)

XML

Long-term Debt (Schedule Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt and current maturities	$ 430,615	$ 428,789
Current maturities of long-term debt	(5,193)	(4,382)
Total long-term debt	425,422	424,407
Foreign Lines of Credit [Member]
Debt Instrument [Line Items]
Long-term debt and current maturities	5,193	4,382
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt and current maturities	76,000	75,000
Senior Notes [Member] | 4.10% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt and current maturities	$ 349,422	$ 349,407
Senior notes, interest rate	4.10%
Debt instrument, maturity date	2022

XML

Derivatives and Hedging Activities (Effect Of Derivative Instruments On The Consolidated Statements Of Income Non-Designated Derivatives)(Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	$ 678	[1]	$ 1,735	[1]
Goldman Sachs [Member] | Interest Rate Swap [Member] | Other income, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	$ 678		$ 1,735

[1] The gain on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

XML

Intangibles (Net of Amortization) and Goodwill (Schedule Of Amortization Expense And Estimated Annual Amortization Expense Related To Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 1.9	$ 1.9
2013	5.2
2014	6.2
2015	5.8
2016	1.9
2017	0.7
2018	$ 0.7

XML

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

3 Months Ended

Mar. 31, 2013

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			Derivative Instruments			Foreign Currency Translation Adjustments			Marketable Securities			Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2011	$	(76,416	)	$	(4,736	)	$	(17,944	)	$	364		$	(98,732	)
Other comprehensive income (loss) before reclassifications	(24,291		)	(330		)	7,567			676			(16,378		)
Amounts reclassified from accumulated other comprehensive loss	4,568			893			0			(1,040		)	4,421
Other comprehensive income (loss)	(19,723		)	563			7,567			(364		)	(11,957		)
Balance at December 31, 2012	(96,139		)	(4,173		)	(10,377		)	0			(110,689		)
Other comprehensive income (loss) before reclassifications	0			0			(18,280		)	0			(18,280		)
Amounts reclassified from accumulated other comprehensive loss	1,375			213			0			0			1,588
Other comprehensive income (loss)	1,375			213			(18,280		)	0			(16,692		)
Balance at March 31, 2013	$	(94,764	)	$	(3,960	)	$	(28,657	)	$	0		$	(127,381	)

Schedule of Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Loss

The following table illustrates the amounts, net of tax, reclassified out of each component of accumulated other comprehensive loss and their location within the respective line items on the Consolidated Statements of Income.

(in thousands)	Amount Reclassified from Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss Component	Three Months Ended March 31,				Affected Line Item on the Consolidated Statements of Income
	2013		2012
Pension plans and other postretirement benefits:
Amortization of prior service cost	$	2	$	5	(a)
Amortization of actuarial net loss	1,363		1,031		(a)
Amortization of transition obligation	10		10		(a)
Total pension plans and other postretirement benefits	1,375		1,046
Derivative instruments:
Amortization of mortgage loan interest rate swap	200		231		Interest and financing expenses, net
Amortization of construction loan interest rate swap	13		13		Cost of rental
Total derivative instruments	213		244
Total reclassifications for the period	$	1,588	$	1,290

(a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 4 in this Form 10-Q and Note 19 in our 2012 Annual Report for further information.

XML

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Schedule of Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Pension plans and other postretirement benefits:
Amortization of prior service cost	$ 2	[1]	$ 5	[1]
Amortization of actuarial net loss	1,363	[1]	1,031	[1]
Amortization of transition obligation	10	[1]	10	[1]
Total pension plans and other postretirement benefits	1,375		1,046		4,568
Derivative instruments:
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	213		244		893
Amounts reclassified from accumulated other comprehensive loss, Accumulated Other Comprehensive Income (Loss)	1,588		1,290		4,421
Interest and financing expenses, net [Member]
Derivative instruments:
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	200		231
Cost of rental [Member]
Derivative instruments:
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	$ 13		$ 13

[1] (a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 4 in this Form 10-Q and Note 19 in our 2012 Annual Report for further information.

XML

Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2013

Asset Retirement Obligation [Abstract]

Activity Associated With Asset Retirement Obligations

The following table illustrates the activity associated with our asset retirement obligations for the three months ended March 31, 2013 and March 31, 2012.

(in thousands)	2013			2012
Asset retirement obligations, January 1	$	2,800		$	3,297
Accretion expense	30			43
Liabilities settled	(297		)	(128		)
Changes in expected cash flows and timing	185			98
Asset retirement obligations, March 31	$	2,718		$	3,310

XML

Contractual Commitments and Contingencies (Environmental) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Site Contingency [Line Items]
Total accruals for environmental remediation	$ 19.5	$ 19.7
Accruals for dismantling and decommissioning costs	0.5	0.5
Former TEL Plant Site, Louisiana [Member]
Site Contingency [Line Items]
Accrual, discounted	5.5	5.6
Accrual, undiscounted	6.8	6.9
Discount rate for accrual	3.00%	3.00%
2013 expected payments	0.6
2014 expected payments	0.8
2015 expected payments	0.6
2016 expected payments	0.5
2017 expected payments	0.6
Expected payments thereafter	3.7
Houston, Texas Plant Site [Member]
Site Contingency [Line Items]
Accrual, discounted	6.0	6.1
Accrual, undiscounted	9.1	9.3
Discount rate for accrual	3.00%	3.00%
2013 expected payments	0.7
2014 expected payments	0.2
2015 expected payments	0.2
2016 expected payments	0.2
2017 expected payments	0.2
Expected payments thereafter	7.6
Accrual for environmental remediation	5.8	5.8
Accrual for remediation of groundwater and soil	5.6	5.6
Superfund Site, Louisiana [Member]
Site Contingency [Line Items]
Accrual, discounted	3.2	3.2
Accrual, undiscounted	4.4	4.4
Discount rate for accrual	3.00%	3.00%
2013 expected payments	0
2014 expected payments	0
2015 expected payments	0.2
2016 expected payments	0.3
2017 expected payments	0.3
Expected payments thereafter	$ 3.6

XML

Pension Plans and Other Postretirement Benefits (Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,663	$ 2,157
Interest cost	2,384	2,359
Expected return on plan assets	(3,617)	(3,301)
Amortization of prior service (credit) cost	4	53
Amortization of actuarial net loss	1,801	1,292
Net periodic benefit cost	3,235	2,560
Domestic Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	499	522
Interest cost	682	787
Expected return on plan assets	(364)	(373)
Amortization of prior service (credit) cost	2	2
Amortization of actuarial net loss	0	0
Net periodic benefit cost	819	938
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,354	1,167
Interest cost	1,357	1,333
Expected return on plan assets	(1,729)	(1,506)
Amortization of prior service (credit) cost	(2)	(38)
Amortization of transition obligation	0	0
Amortization of actuarial net loss	354	276
Net periodic benefit cost	1,334	1,232
Foreign Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	8	7
Interest cost	27	27
Expected return on plan assets	0	0
Amortization of prior service (credit) cost	0	0
Amortization of transition obligation	13	13
Amortization of actuarial net loss	10	8
Net periodic benefit cost	$ 58	$ 55

XML

Asset Retirement Obligations (Activity Associated With Asset Retirement Obligations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Asset Retirement Obligations, Roll Forward Analysis [Roll Forward]
Asset retirement obligations, January 1	$ 2,800	$ 3,297
Accretion expense	30	43
Liabilities settled	(297)	(128)
Changes in expected cash flows and timing	185	98
Asset retirement obligations, March 31	$ 2,718	$ 3,310

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Derivatives and Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 Goldman Sachs [Member]	Dec. 31, 2012 Goldman Sachs [Member]	Mar. 31, 2013 Interest Rate Swap [Member] Mortgage Loan Interest Rate Swap [Member]	Dec. 31, 2012 Interest Rate Swap [Member] Mortgage Loan Interest Rate Swap [Member]	Mar. 31, 2013 Interest Rate Swap [Member] Construction Loan Interest Rate Swap [Member]	Dec. 31, 2012 Interest Rate Swap [Member] Construction Loan Interest Rate Swap [Member]	Mar. 31, 2013 Interest Rate Swap [Member] Goldman Sachs [Member]	Dec. 31, 2012 Interest Rate Swap [Member] Goldman Sachs [Member]	Jun. 25, 2009 Interest Rate Swap [Member] Goldman Sachs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized loss net of tax related to the fair value of the interest rate swap recorded in accumulated other comprehensive loss	$ (3,960,000)	$ (4,173,000)	$ (4,736,000)			$ (1,500,000)	$ (1,700,000)	$ (2,500,000)	$ (2,500,000)
Interest rate swaps, accumulated other comprehensive loss expected to be reclassified into earnings in next twelve months	(900,000)
Notional amount												97,000,000
Rate of fixed-rate payments for interest rate swap												5.3075%
Cash collateral deposit				33,827,000	37,694,000					33,827,000	37,694,000
Total amount of fair value recorded in accrued expenses										900,000	2,300,000
Termination value of obligations	$ 29,400,000

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Consolidating Financial Information (Consolidating Statements of Income and Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Revenue:
Net sales - product	$ 559,750		$ 559,821
Rental revenue	2,858		2,858
Total revenue	562,608		562,679
Costs:
Cost of goods sold - product	391,343		392,075
Cost of rental	1,068		1,068
Total costs	392,411		393,143
Gross profit	170,197		169,536
Selling, general, and administrative expenses	40,941		36,908
Research, development, and testing expenses	31,021		27,895
Operating (loss) profit	98,235		104,733
Interest and financing expenses, net	5,109		4,482
Loss on early extinguishment of debt	0	[1]	3,221	[1]
Other income (expense), net	747		1,773
(Loss) income before income taxes and equity income of subsidiaries	93,873		98,803
Income tax (benefit) expense	26,038		32,256
Equity income of subsidiaries	0		0
Net income	67,835		66,547		239,593
Other comprehensive (loss) income	(16,692)		8,085		(11,957)
Comprehensive income	51,143		74,632
Parent Company [Member]
Revenue:
Net sales - product	0		0
Rental revenue	0		0
Total revenue	0		0
Costs:
Cost of goods sold - product	0		0
Cost of rental	0		0
Total costs	0		0
Gross profit	0		0
Selling, general, and administrative expenses	1,684		1,450
Research, development, and testing expenses	0		0
Operating (loss) profit	(1,684)		(1,450)
Interest and financing expenses, net	4,810		3,377
Loss on early extinguishment of debt			3,221
Other income (expense), net	700		1,744
(Loss) income before income taxes and equity income of subsidiaries	(5,794)		(6,304)
Income tax (benefit) expense	(2,013)		(2,584)
Equity income of subsidiaries	71,616		70,267
Net income	67,835		66,547
Other comprehensive (loss) income	(16,692)		8,085
Comprehensive income	51,143		74,632
Guarantor Subsidiaries [Member]
Revenue:
Net sales - product	211,694		225,709
Rental revenue	2,858		2,858
Total revenue	214,552		228,567
Costs:
Cost of goods sold - product	102,006		99,176
Cost of rental	1,068		1,068
Total costs	103,074		100,244
Gross profit	111,478		128,323
Selling, general, and administrative expenses	21,792		27,819
Research, development, and testing expenses	21,952		21,120
Operating (loss) profit	67,734		79,384
Interest and financing expenses, net	(610)		87
Loss on early extinguishment of debt			0
Other income (expense), net	3		(31)
(Loss) income before income taxes and equity income of subsidiaries	68,347		79,266
Income tax (benefit) expense	19,819		29,124
Equity income of subsidiaries	0		0
Net income	48,528		50,142
Other comprehensive (loss) income	(3,514)		2,778
Comprehensive income	45,014		52,920
Non-Guarantor Subsidiaries [Member]
Revenue:
Net sales - product	348,056		334,112
Rental revenue	0		0
Total revenue	348,056		334,112
Costs:
Cost of goods sold - product	289,337		292,899
Cost of rental	0		0
Total costs	289,337		292,899
Gross profit	58,719		41,213
Selling, general, and administrative expenses	17,465		7,639
Research, development, and testing expenses	9,069		6,775
Operating (loss) profit	32,185		26,799
Interest and financing expenses, net	909		1,018
Loss on early extinguishment of debt			0
Other income (expense), net	44		60
(Loss) income before income taxes and equity income of subsidiaries	31,320		25,841
Income tax (benefit) expense	8,232		5,716
Equity income of subsidiaries	0		0
Net income	23,088		20,125
Other comprehensive (loss) income	(14,001)		4,730
Comprehensive income	9,087		24,855
Total Consolidating Adjustments [Member]
Revenue:
Net sales - product	0		0
Rental revenue	0		0
Total revenue	0		0
Costs:
Cost of goods sold - product	0		0
Cost of rental	0		0
Total costs	0		0
Gross profit	0		0
Selling, general, and administrative expenses	0		0
Research, development, and testing expenses	0		0
Operating (loss) profit	0		0
Interest and financing expenses, net	0		0
Loss on early extinguishment of debt			0
Other income (expense), net	0		0
(Loss) income before income taxes and equity income of subsidiaries	0		0
Income tax (benefit) expense	0		0
Equity income of subsidiaries	(71,616)		(70,267)
Net income	(71,616)		(70,267)
Other comprehensive (loss) income	17,515		(7,508)
Comprehensive income	$ (54,101)		$ (77,775)

[1] In March 2012, we entered into a $650 million five-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

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Long-term Debt (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Average interest rate during the period	2.16%	1.84%
4.10% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount of debt issued	350,000,000
Senior notes, interest rate	4.10%
Debt instrument, maturity date	2022

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Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of year	$ 89,129		$ 50,370
Cash flows from operating activities:
Net income	67,835		66,547
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	11,796		10,482
Noncash environmental remediation and dismantling	281		251
Noncash pension benefits expense	4,569		3,792
Noncash postretirement benefits expense	877		993
Noncash foreign exchange (gain) loss	(86)		1,215
Deferred income tax expense	1,742		3,077
Loss on early extinguishment of debt	0	[1]	3,221	[1]
Restricted stock award	244		0
Unrealized gain on derivative instruments, net	(3,212)		(4,208)
Working capital changes	(55,707)		(22,877)
Realized loss on derivative instruments, net	2,535		2,474
Cash pension benefits contributions	(7,573)		(7,355)
Cash postretirement benefits contributions	(458)		(628)
Change in book overdraft	1,243		6,032
Other, net	3,042		74
Cash provided from (used in) operating activities	27,128		63,090
Cash flows from investing activities:
Capital expenditures	(16,109)		(7,432)
Deposits for interest rate swap	(2,982)		(5,079)
Return of deposits for interest rate swap	6,850		8,340
Payments on settlement of interest rate swap	(2,617)		(2,574)
Receipts from settlement of interest rate swap	82		100
Cash provided from (used in) investing activities	(14,776)		(6,645)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000		(22,000)
Repayment of Foundry Park I mortgage loan	0		(715)
Net borrowings (repayments) under lines of credit	811		(223)
Dividends paid	(11,998)		(10,054)
Debt issuance costs	(1,115)		(2,351)
Repurchases of common stock	(22,508)		0
Cash provided from (used in) financing activities	(33,810)		(35,343)
Effect of foreign exchange on cash and cash equivalents	(3,658)		1,274
(Decrease) increase in cash and cash equivalents	(25,116)		22,376
Cash and cash equivalents at end of period	$ 64,013		$ 72,746

[1] In March 2012, we entered into a $650 million five-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

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Consolidating Financial Information (Consolidating Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 64,013	$ 89,129	$ 72,746	$ 50,370
Trade and other accounts receivable, net	331,155	297,055
Amounts due from affiliated companies	0	0
Inventories	321,339	322,674
Deferred income taxes	7,451	8,452
Prepaid expenses and other current assets	34,256	18,185
Total current assets	758,214	735,495
Amounts due from affiliated companies	0	0
Property, plant, and equipment, at cost	1,078,658	1,070,967
Less accumulated depreciation and amortization	718,064	712,596
Net property, plant, and equipment	360,594	358,371
Investment in consolidated subsidiaries	0	0
Prepaid pension cost	12,800	12,710
Deferred income taxes	53,960	55,123
Other assets and deferred charges	67,443	72,007
Intangibles (net of amortization) and goodwill	28,378	30,542
Total assets	1,281,389	1,264,248
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	115,675	119,298
Accrued expenses	65,549	79,061
Dividends payable	10,282	0
Book overdraft	5,149	3,906
Amounts due to affiliated companies	0	0
Long-term debt, current portion	5,193	4,382
Income taxes payable	25,294	10,024
Total current liabilities	227,142	216,671
Long-term debt	425,422	424,407
Amounts due to affiliated companies	0	0
Other noncurrent liabilities	210,256	220,965
Total liabilities	862,820	862,043
Shareholders’ equity:
Common stock and paid-in capital	0	721
Accumulated other comprehensive loss	(127,381)	(110,689)		(98,732)
Retained earnings	545,950	512,173
Total shareholders' equity	418,569	402,205		549,593
Total liabilities and shareholders’ equity	1,281,389	1,264,248
Parent Company [Member]
ASSETS
Cash and cash equivalents	3	5,001	17	17
Trade and other accounts receivable, net	3,562	4,346
Amounts due from affiliated companies	21,824	0
Inventories	0	0
Deferred income taxes	2,079	2,555
Prepaid expenses and other current assets	10,591	66
Total current assets	38,059	11,968
Amounts due from affiliated companies	55,928	58,935
Property, plant, and equipment, at cost	0	0
Less accumulated depreciation and amortization	0	0
Net property, plant, and equipment	0	0
Investment in consolidated subsidiaries	862,545	895,029
Prepaid pension cost	0	0
Deferred income taxes	51,155	53,087
Other assets and deferred charges	42,285	46,286
Intangibles (net of amortization) and goodwill	0	0
Total assets	1,049,972	1,065,305
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	25	206
Accrued expenses	10,579	8,367
Dividends payable	10,282
Book overdraft	0	0
Amounts due to affiliated companies	45,626	91,403
Long-term debt, current portion	0	0
Income taxes payable	4,955	0
Total current liabilities	71,467	99,976
Long-term debt	425,422	424,407
Amounts due to affiliated companies	0	0
Other noncurrent liabilities	134,514	138,717
Total liabilities	631,403	663,100
Shareholders’ equity:
Common stock and paid-in capital	0	721
Accumulated other comprehensive loss	(127,381)	(110,689)
Retained earnings	545,950	512,173
Total shareholders' equity	418,569	402,205
Total liabilities and shareholders’ equity	1,049,972	1,065,305
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	4,141	7,202	27,295	9,653
Trade and other accounts receivable, net	121,399	116,865
Amounts due from affiliated companies	78,413	142,277
Inventories	124,731	125,171
Deferred income taxes	4,690	5,204
Prepaid expenses and other current assets	21,447	16,253
Total current assets	354,821	412,972
Amounts due from affiliated companies	111,833	56,326
Property, plant, and equipment, at cost	840,821	833,352
Less accumulated depreciation and amortization	584,102	578,183
Net property, plant, and equipment	256,719	255,169
Investment in consolidated subsidiaries	0	0
Prepaid pension cost	0	0
Deferred income taxes	0	0
Other assets and deferred charges	23,863	23,670
Intangibles (net of amortization) and goodwill	22,031	23,784
Total assets	769,267	771,921
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	72,851	75,483
Accrued expenses	37,399	51,577
Dividends payable	0
Book overdraft	5,149	3,906
Amounts due to affiliated companies	46,097	55,437
Long-term debt, current portion	0	0
Income taxes payable	5,789	55
Total current liabilities	167,285	186,458
Long-term debt	0	0
Amounts due to affiliated companies	63,954	8,024
Other noncurrent liabilities	41,706	49,280
Total liabilities	272,945	243,762
Shareholders’ equity:
Common stock and paid-in capital	388,282	388,282
Accumulated other comprehensive loss	(22,281)	(18,767)
Retained earnings	130,321	158,644
Total shareholders' equity	496,322	528,159
Total liabilities and shareholders’ equity	769,267	771,921
Non-Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	59,869	76,926	45,434	40,700
Trade and other accounts receivable, net	206,194	175,844
Amounts due from affiliated companies	16,809	33,282
Inventories	196,608	197,503
Deferred income taxes	682	693
Prepaid expenses and other current assets	2,218	1,866
Total current assets	482,380	486,114
Amounts due from affiliated companies	0	0
Property, plant, and equipment, at cost	237,837	237,615
Less accumulated depreciation and amortization	133,962	134,413
Net property, plant, and equipment	103,875	103,202
Investment in consolidated subsidiaries	0	0
Prepaid pension cost	12,800	12,710
Deferred income taxes	6,909	8,451
Other assets and deferred charges	1,295	2,051
Intangibles (net of amortization) and goodwill	6,347	6,758
Total assets	613,606	619,286
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	42,799	43,609
Accrued expenses	17,571	19,117
Dividends payable	0
Book overdraft	0	0
Amounts due to affiliated companies	25,323	28,719
Long-term debt, current portion	5,193	4,382
Income taxes payable	14,550	9,969
Total current liabilities	105,436	105,796
Long-term debt	0	0
Amounts due to affiliated companies	103,807	107,237
Other noncurrent liabilities	38,140	39,383
Total liabilities	247,383	252,416
Shareholders’ equity:
Common stock and paid-in capital	71,322	71,322
Accumulated other comprehensive loss	(50,056)	(36,055)
Retained earnings	344,957	331,603
Total shareholders' equity	366,223	366,870
Total liabilities and shareholders’ equity	613,606	619,286
Total Consolidating Adjustments [Member]
ASSETS
Cash and cash equivalents	0	0	0	0
Trade and other accounts receivable, net	0	0
Amounts due from affiliated companies	(117,046)	(175,559)
Inventories	0	0
Deferred income taxes	0	0
Prepaid expenses and other current assets	0	0
Total current assets	(117,046)	(175,559)
Amounts due from affiliated companies	(167,761)	(115,261)
Property, plant, and equipment, at cost	0	0
Less accumulated depreciation and amortization	0	0
Net property, plant, and equipment	0	0
Investment in consolidated subsidiaries	(862,545)	(895,029)
Prepaid pension cost	0	0
Deferred income taxes	(4,104)	(6,415)
Other assets and deferred charges	0	0
Intangibles (net of amortization) and goodwill	0	0
Total assets	(1,151,456)	(1,192,264)
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	0	0
Accrued expenses	0	0
Dividends payable	0
Book overdraft	0	0
Amounts due to affiliated companies	(117,046)	(175,559)
Long-term debt, current portion	0	0
Income taxes payable	0	0
Total current liabilities	(117,046)	(175,559)
Long-term debt	0	0
Amounts due to affiliated companies	(167,761)	(115,261)
Other noncurrent liabilities	(4,104)	(6,415)
Total liabilities	(288,911)	(297,235)
Shareholders’ equity:
Common stock and paid-in capital	(459,604)	(459,604)
Accumulated other comprehensive loss	72,337	54,822
Retained earnings	(475,278)	(490,247)
Total shareholders' equity	(862,545)	(895,029)
Total liabilities and shareholders’ equity	$ (1,151,456)	$ (1,192,264)

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Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Earnings Per Share [Abstract]
Anti-dilutive stock-based compensation awards that were excluded from the calculation of diluted earnings per share (in shares)	11,940	0
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$ 67,835	$ 66,547	$ 239,593
Earnings allocated to participating securities	61	0
Net income attributable to common shareholders after allocation of earnings to participating securities	$ 67,774	$ 66,547
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted (in shares)	13,376,000	13,405,000
Earnings per share - basic and diluted (in dollars per share)	$ 5.07	$ 4.96

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Intangibles (Net of Amortization) and Goodwill (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Information Related To Intangible Assets

	Identifiable Intangibles
	March 31, 2013				December 31, 2012
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizing intangible assets
Formulas and technology	$	91,526	$	76,106	$	91,662	$	74,762
Contracts	9,593		7,079		9,593		6,734
Customer bases	7,006		2,509		7,021		2,400
Trademarks and trade names	1,560		492		1,586		426
Goodwill	4,879				5,002
	$	114,564	$	86,186	$	114,864	$	84,322

Schedule Of Amortization Expense

Amortization expense was (in millions):

Three months ended March 31, 2013	$	1.9
Three months ended March 31, 2012	1.9

Schedule Of Estimated Annual Amortization Expense Related To Intangible Assets

Estimated amortization expense for the remainder of 2013, as well as annual amortization expense related to our intangible assets for the next five years is expected to be (in millions):

2013	$	5.2
2014	6.2
2015	5.8
2016	1.9
2017	0.7
2018	0.7

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Calculated 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)	2013		2012
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$	67,835	$	66,547
Earnings allocated to participating securities	61		0
Net income attributable to common shareholders after allocation of earnings to participating securities	$	67,774	$	66,547
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted	13,376		13,405
Earnings per share - basic and diluted	$	5.07	$	4.96

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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, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Pension Plans and Other Postretirement Benefits, Beginning Balance	$ (96,139)	$ (76,416)	$ (76,416)
Derivative Instruments, Beginning Balance	(4,173)	(4,736)	(4,736)
Foreign Currency Translation Adjustments, Beginning Balance	(10,377)	(17,944)	(17,944)
Marketable Securities, Beginning Balance	0	364	364
Accumulated Other Comprehensive Income (Loss), Beginning Balance	(110,689)	(98,732)	(98,732)
Other comprehensive income (loss) before reclassifications, Pension Plans and Other Postretirement Benefits	0		(24,291)
Other comprehensive income (loss) before reclassifications, Derivative Instruments	0	(139)	(330)
Other comprehensive income (loss) before reclassifications, Foreign Currency Translation Adjustments	(18,280)	6,669	7,567
Other comprehensive income (loss) before reclassifications, Marketable Securities	0	265	676
Other comprehensive income (loss) before reclassifications, Accumulated Other Comprehensive Income (Loss)	(18,280)		(16,378)
Amounts reclassified from accumulated other comprehensive loss, Pension Plans and Other Postretirement Benefits	1,375	1,046	4,568
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	213	244	893
Amounts reclassified from accumulated other comprehensive loss, Foreign Currency Translation Adjustments	0		0
Amounts reclassified from accumulated other comprehensive loss, Marketable Securities	0		(1,040)
Amounts reclassified from accumulated other comprehensive loss, Accumulated Other Comprehensive Income (Loss)	1,588	1,290	4,421
Total pension plans and other postretirement benefits	1,375	1,046	(19,723)
Total derivative instruments	213	105	563
Other comprehensive income (loss), Foreign Currency Translation Adjustments	(18,280)		7,567
Other comprehensive income (loss), Marketable Securities	0		(364)
Other comprehensive (loss) income	(16,692)	8,085	(11,957)
Pension Plans and Other Postretirement Benefits, Ending Balance	(94,764)		(96,139)
Derivative Instruments, Ending Balance	(3,960)		(4,173)
Foreign Currency Translation Adjustments, Ending Balance	(28,657)		(10,377)
Marketable Securities, Ending Balance	0		0
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ (127,381)		$ (110,689)

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Intangibles (Net of Amortization) and Goodwill (Narrative) (Details) (USD $)			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Customer Bases [Member]	Mar. 31, 2013 Trademarks And Trade Names [Member]	Mar. 31, 2013 Minimum [Member] Contracts [Member]	Mar. 31, 2013 Minimum [Member] Formulas And Technology [Member]	Mar. 31, 2013 Maximum [Member] Contracts [Member]	Mar. 31, 2013 Maximum [Member] Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated goodwill impairment	$ 0	$ 0
Estimated economic life, in years			20 years	10 years	1 year 6 months	5 years	10 years	20 years

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Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2013

Long-term Debt and Capital Lease Obligations [Abstract]

Schedule Of Long-Term Debt

(in thousands)	March 31, 2013			December 31, 2012
Senior notes - 4.10% due 2022	$	349,422		$	349,407
Revolving credit facility	76,000			75,000
Lines of credit	5,193			4,382
	430,615			428,789
Current maturities of long-term debt	(5,193		)	(4,382		)
	$	425,422		$	424,407

Schedule Of Unused Portion Of Revolving Credit Facility

The following table provides information related to the unused portion of our revolving credit facility in effect at March 31, 2013 and December 31, 2012:

(in millions)	March 31, 2013		December 31, 2012
Maximum borrowing capacity under the revolving credit facility	$	650.0	$	650.0
Outstanding borrowings under the revolving credit facility	76.0		75.0
Outstanding letters of credit	3.1		3.1
Unused portion of revolving credit facility	$	570.9	$	571.9

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Contractual Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Accruals For Environmental Remediation, Dismantling, and Decontamination

	March 31, 2013									December 31, 2012
(in millions)	Former TEL Plant Site, Louisiana			Houston, Texas Plant Site			Superfund Site, Louisiana			Former TEL Plant Site, Louisiana			Houston, Texas Plant Site			Superfund Site, Louisiana
Accrual, discounted	$	5.5		$	6.0		$	3.2		$	5.6		$	6.1		$	3.2
Accrual, undiscounted	6.8			9.1			4.4			6.9			9.3			4.4
Discount rate for accrual	3		%	3		%	3		%	3		%	3		%	3		%
Expected future payments:
2013	$	0.6		$	0.7		$	0.0
2014	0.8			0.2			0.0
2015	0.6			0.2			0.2
2016	0.5			0.2			0.3
2017	0.6			0.2			0.3
Thereafter	3.7			7.6			3.6

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Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013 Ordinary Cash Dividends [Member]	Dec. 31, 2012 Ordinary Cash Dividends [Member]	Dec. 31, 2012 Special Cash Dividend [Member]
Cash dividends (in dollars per share)	$ 0.9	$ 3.00	$ 25.00

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Derivatives and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value of Derivative Instruments

The table below presents the fair value of our derivative financial instruments, as well as their classification on the Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012.

Asset Derivatives

Liability Derivatives

March 31, 2013

December 31, 2012

March 31, 2013

December 31, 2012

(in thousands)

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Derivatives Not Designated as Hedging Instruments

Goldman Sachs interest rate swap

$

0

$

0

Accrued expenses and Other noncurrent liabilities

$

29,548

Accrued expenses and Other noncurrent liabilities

$

32,761

Effect of Derivative Instruments on the Consolidated Statements of Income Designated Cash Flow Hedges

Effect of Derivative Instruments on the Consolidated Statements of Income

Designated Cash Flow Hedges

(in thousands)

Derivatives in Cash Flow Hedging Relationship	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)					Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Three Months Ended March 31,						Three Months Ended March 31,							Three Months Ended March 31,
	2013		2012				2013			2012				2013		2012
Mortgage loan interest rate swap	$	0	$	(228	)	Interest and financing expenses	$	(327	)	$	(378	)		$	0	$	0
Construction loan interest rate swap	$	0	$	0		Cost of rental	$	(21	)	$	(21	)		$	0	$	0

Effect of Derivative Instruments on the Consolidated Statements of Income Non-Designated Derivatives

Effect of Derivative Instruments on the Consolidated Statements of Income

Non-Designated Derivatives

(in thousands)

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in  Income on Derivatives	Amount of Gain (Loss) Recognized in  Income on Derivatives
		Three Months Ended March 31,
		2013		2012
Goldman Sachs interest rate swap	Other income, net	$	678	$	1,735

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Segment Information (Segment Depreciation And Amortization) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Information [Line Items]
Depreciation and amortization	$ 11,796	$ 10,482
Petroleum Additives [Member]
Segment Information [Line Items]
Depreciation and amortization	9,829	8,797
Real Estate Development [Member]
Segment Information [Line Items]
Depreciation and amortization	1,295	946
All Other and Corporate [Member]
Segment Information [Line Items]
Depreciation and amortization	$ 672	$ 739

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Derivatives and Hedging Activities (Fair Value Of Derivative Instruments) (Details) (Goldman Sachs [Member], Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of interest rate swap asset derivatives, not designated as hedging instruments	$ 0	$ 0
Accrued Expenses And Oher Noncurrent Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of interest rate swap liability derivatives, not designated as hedging instruments	$ 29,548	$ 32,761

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Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Revenue:
Net sales - product	$ 559,750		$ 559,821
Rental revenue	2,858		2,858
Total revenue	562,608		562,679
Costs:
Cost of goods sold - product	391,343		392,075
Cost of rental	1,068		1,068
Total costs	392,411		393,143
Gross profit	170,197		169,536
Selling, general, and administrative expenses	40,941		36,908
Research, development, and testing expenses	31,021		27,895
Operating (loss) profit	98,235		104,733
Interest and financing expenses, net	5,109		4,482
Loss on early extinguishment of debt	0	[1]	3,221	[1]
Other income, net	747		1,773
Income before income tax expense	93,873		98,803
Income tax expense	26,038		32,256
Net income	$ 67,835		$ 66,547		$ 239,593
Earnings per share - basic and diluted (in dollars per share)	$ 5.07		$ 4.96
Cash dividends declared per common share (in dollars per share)	$ 0.90		$ 0.75

[1] In March 2012, we entered into a $650 million five-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

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Intangibles (Net of Amortization) and Goodwill (Schedule Of Information Related To Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Accumulated Amortization	$ 86,186	$ 84,322
Goodwill, Gross Carrying Amount	4,879	5,002
Amortizing intangible assets and Goodwill, Gross Carrying Amount	114,564	114,864
Formulas And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	91,526	91,662
Amortizing intangible assets, Accumulated Amortization	76,106	74,762
Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	9,593	9,593
Amortizing intangible assets, Accumulated Amortization	7,079	6,734
Customer Bases [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	7,006	7,021
Amortizing intangible assets, Accumulated Amortization	2,509	2,400
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount	1,560	1,586
Amortizing intangible assets, Accumulated Amortization	$ 492	$ 426

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Trade and other accounts receivable, allowance for doubtful accounts	$ 502	$ 319
Common stock, no par value
Common stock, authorized shares	80,000,000	80,000,000
Common stock, issued shares	13,327,077	13,417,877
Common stock, outstanding shares	13,327,077	13,417,877

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Fair Value Measurements (Estimated Fair Value Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Long-term debt, including current maturities, Carrying Amount	$ 430,615	$ 428,789
Long-term debt, including current maturities, Fair Value	$ 442,150	$ 436,777

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Consolidating Financial Information (Tables)

3 Months Ended

Mar. 31, 2013

Consolidating Financial Information [Abstract]

Schedule Of Consolidating Statements Of Income And Comprehensive Income

NewMarket Corporation and Subsidiaries
Consolidating Statements of Income and Comprehensive Income
Three Months Ended March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Revenue:
Net sales - product	$	0		$	211,694		$	348,056		$	0		$	559,750
Rental revenue	0			2,858			0			0			2,858
	0			214,552			348,056			0			562,608
Costs:
Cost of goods sold - product	0			102,006			289,337			0			391,343
Cost of rental	0			1,068			0			0			1,068
	0			103,074			289,337			0			392,411
Gross profit	0			111,478			58,719			0			170,197
Selling, general, and administrative expenses	1,684			21,792			17,465			0			40,941
Research, development, and testing expenses	0			21,952			9,069			0			31,021
Operating (loss) profit	(1,684		)	67,734			32,185			0			98,235
Interest and financing expenses, net	4,810			(610		)	909			0			5,109
Other income (expense), net	700			3			44			0			747
(Loss) income before income taxes and equity income of subsidiaries	(5,794		)	68,347			31,320			0			93,873
Income tax (benefit) expense	(2,013		)	19,819			8,232			0			26,038
Equity income of subsidiaries	71,616			0			0			(71,616		)	0
Net income	67,835			48,528			23,088			(71,616		)	67,835
Other comprehensive (loss) income	(16,692		)	(3,514		)	(14,001		)	17,515			(16,692		)
Comprehensive income	$	51,143		$	45,014		$	9,087		$	(54,101	)	$	51,143

NewMarket Corporation and Subsidiaries
Consolidating Statements of Income and Comprehensive Income
Three Months Ended March 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Total Consolidating Adjustments			Consolidated
Revenue:
Net sales - product	$	0		$	225,709		$	334,112	$	0		$	559,821
Rental revenue	0			2,858			0		0			2,858
	0			228,567			334,112		0			562,679
Costs:
Cost of goods sold - product	0			99,176			292,899		0			392,075
Cost of rental	0			1,068			0		0			1,068
	0			100,244			292,899		0			393,143
Gross profit	0			128,323			41,213		0			169,536
Selling, general, and administrative expenses	1,450			27,819			7,639		0			36,908
Research, development, and testing expenses	0			21,120			6,775		0			27,895
Operating (loss) profit	(1,450		)	79,384			26,799		0			104,733
Interest and financing expenses, net	3,377			87			1,018		0			4,482
Loss on early extinguishment of debt	3,221			0			0		0			3,221
Other income (expense), net	1,744			(31		)	60		0			1,773
(Loss) income before income taxes and equity income of subsidiaries	(6,304		)	79,266			25,841		0			98,803
Income tax (benefit) expense	(2,584		)	29,124			5,716		0			32,256
Equity income of subsidiaries	70,267			0			0		(70,267		)	0
Net income	66,547			50,142			20,125		(70,267		)	66,547
Other comprehensive (loss) income	8,085			2,778			4,730		(7,508		)	8,085
Comprehensive income	$	74,632		$	52,920		$	24,855	$	(77,775	)	$	74,632

Schedule of Consolidating Balance Sheets

NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	3		$	4,141		$	59,869		$	0		$	64,013
Trade and other accounts receivable, net	3,562			121,399			206,194			0			331,155
Amounts due from affiliated companies	21,824			78,413			16,809			(117,046		)	0
Inventories	0			124,731			196,608			0			321,339
Deferred income taxes	2,079			4,690			682			0			7,451
Prepaid expenses and other current assets	10,591			21,447			2,218			0			34,256
Total current assets	38,059			354,821			482,380			(117,046		)	758,214
Amounts due from affiliated companies	55,928			111,833			0			(167,761		)	0
Property, plant, and equipment, at cost	0			840,821			237,837			0			1,078,658
Less accumulated depreciation and amortization	0			584,102			133,962			0			718,064
Net property, plant, and equipment	0			256,719			103,875			0			360,594
Investment in consolidated subsidiaries	862,545			0			0			(862,545		)	0
Prepaid pension cost	0			0			12,800			0			12,800
Deferred income taxes	51,155			0			6,909			(4,104		)	53,960
Other assets and deferred charges	42,285			23,863			1,295			0			67,443
Intangibles (net of amortization) and goodwill	0			22,031			6,347			0			28,378
Total assets	$	1,049,972		$	769,267		$	613,606		$	(1,151,456	)	$	1,281,389
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	25		$	72,851		$	42,799		$	0		$	115,675
Accrued expenses	10,579			37,399			17,571			0			65,549
Dividends payable	10,282			0			0			0			10,282
Book overdraft	0			5,149			0			0			5,149
Amounts due to affiliated companies	45,626			46,097			25,323			(117,046		)	0
Long-term debt, current portion	0			0			5,193			0			5,193
Income taxes payable	4,955			5,789			14,550			0			25,294
Total current liabilities	71,467			167,285			105,436			(117,046		)	227,142
Long-term debt	425,422			0			0			0			425,422
Amounts due to affiliated companies	0			63,954			103,807			(167,761		)	0
Other noncurrent liabilities	134,514			41,706			38,140			(4,104		)	210,256
Total liabilities	631,403			272,945			247,383			(288,911		)	862,820
Shareholders' equity:
Common stock and paid-in capital	0			388,282			71,322			(459,604		)	0
Accumulated other comprehensive loss	(127,381		)	(22,281		)	(50,056		)	72,337			(127,381		)
Retained earnings	545,950			130,321			344,957			(475,278		)	545,950
Total shareholders' equity	418,569			496,322			366,223			(862,545		)	418,569
Total liabilities and shareholders' equity	$	1,049,972		$	769,267		$	613,606		$	(1,151,456	)	$	1,281,389

NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
December 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	5,001		$	7,202		$	76,926		$	0		$	89,129
Trade and other accounts receivable, net	4,346			116,865			175,844			0			297,055
Amounts due from affiliated companies	0			142,277			33,282			(175,559		)	0
Inventories	0			125,171			197,503			0			322,674
Deferred income taxes	2,555			5,204			693			0			8,452
Prepaid expenses and other current assets	66			16,253			1,866			0			18,185
Total current assets	11,968			412,972			486,114			(175,559		)	735,495
Amounts due from affiliated companies	58,935			56,326			0			(115,261		)	0
Property, plant, and equipment, at cost	0			833,352			237,615			0			1,070,967
Less accumulated depreciation and amortization	0			578,183			134,413			0			712,596
Net property, plant, and equipment	0			255,169			103,202			0			358,371
Investment in consolidated subsidiaries	895,029			0			0			(895,029		)	0
Prepaid pension cost	0			0			12,710			0			12,710
Deferred income taxes	53,087			0			8,451			(6,415		)	55,123
Other assets and deferred charges	46,286			23,670			2,051			0			72,007
Intangibles (net of amortization) and goodwill	0			23,784			6,758			0			30,542
Total assets	$	1,065,305		$	771,921		$	619,286		$	(1,192,264	)	$	1,264,248
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	206		$	75,483		$	43,609		$	0		$	119,298
Accrued expenses	8,367			51,577			19,117			0			79,061
Book overdraft	0			3,906			0			0			3,906
Amounts due to affiliated companies	91,403			55,437			28,719			(175,559		)	0
Long-term debt, current portion	0			0			4,382			0			4,382
Income taxes payable	0			55			9,969			0			10,024
Total current liabilities	99,976			186,458			105,796			(175,559		)	216,671
Long-term debt	424,407			0			0			0			424,407
Amounts due to affiliated companies	0			8,024			107,237			(115,261		)	0
Other noncurrent liabilities	138,717			49,280			39,383			(6,415		)	220,965
Total liabilities	663,100			243,762			252,416			(297,235		)	862,043
Shareholders' equity:
Common stock and paid-in capital	721			388,282			71,322			(459,604		)	721
Accumulated other comprehensive loss	(110,689		)	(18,767		)	(36,055		)	54,822			(110,689		)
Retained earnings	512,173			158,644			331,603			(490,247		)	512,173
Total shareholders' equity	402,205			528,159			366,870			(895,029		)	402,205
Total liabilities and shareholders' equity	$	1,065,305		$	771,921		$	619,286		$	(1,192,264	)	$	1,264,248

Schedule Of Condensed Consolidating Statements Of Cash Flows

NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Three Months Ended March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities	$	92,885		$	76,432		$	(174	)	$	(142,015	)	$	27,128
Cash flows from investing activities:
Capital expenditures	0			(8,383		)	(7,726		)	0			(16,109		)
Deposits for interest rate swap	(2,982		)	0			0			0			(2,982		)
Return of deposits for interest rate swap	6,850			0			0			0			6,850
Payments on settlement of interest rate swap	(2,617		)	0			0			0			(2,617		)
Receipts from settlement of interest rate swap	82			0			0			0			82
Cash provided from (used in) investing activities	1,333			(8,383		)	(7,726		)	0			(14,776		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000			0			0			0			1,000
Net borrowings (repayments) under lines of credit	0			0			811			0			811
Dividends paid	(11,998		)	(86,585		)	(9,916		)	96,501			(11,998		)
Debt issuance costs	(1,115		)	0			0			0			(1,115		)
Repurchases of common stock	(22,508		)	0			0			0			(22,508		)
Issuance of intercompany note payable, net	0			(3,135		)	3,135			0			0
Repayment of intercompany note payable, net	3,006			(3,006		)	0			0			0
Financing from affiliated companies	(67,601		)	22,087			0			45,514			0
Cash provided from (used in) financing activities	(99,216		)	(70,639		)	(5,970		)	142,015			(33,810		)
Effect of foreign exchange on cash and cash equivalents	0			(471		)	(3,187		)	0			(3,658		)
(Decrease) increase in cash and cash equivalents	(4,998		)	(3,061		)	(17,057		)	0			(25,116		)
Cash and cash equivalents at beginning of year	5,001			7,202			76,926			0			89,129
Cash and cash equivalents at end of period	$	3		$	4,141		$	59,869		$	0		$	64,013

NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Three Months Ended March 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities	$	(19,495	)	$	75,997		$	12,483		$	(5,895	)	$	63,090
Cash flows from investing activities:
Capital expenditures	0			(5,044		)	(2,388		)	0			(7,432		)
Deposits for interest rate swap	(5,079		)	0			0			0			(5,079		)
Return of deposits for interest rate swap	8,340			0			0			0			8,340
Payments on settlement of interest rate swap	(2,574		)	0			0			0			(2,574		)
Receipts from settlement of interest rate swap	100			0			0			0			100
Cash provided from (used in) investing activities	787			(5,044		)	(2,388		)	0			(6,645		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	(22,000		)	0			0			0			(22,000		)
Repayment of Foundry Park I mortgage loan	0			(715		)	0			0			(715		)
Net borrowings (repayments) under lines of credit	0			0			(223		)	0			(223		)
Dividends paid	(10,054		)	(38		)	(5,857		)	5,895			(10,054		)
Debt issuance costs	(2,351		)	0			0			0			(2,351		)
Financing from affiliated companies	53,113			(53,113		)	0			0			0
Cash provided from (used in) financing activities	18,708			(53,866		)	(6,080		)	5,895			(35,343		)
Effect of foreign exchange on cash and cash equivalents	0			555			719			0			1,274
(Decrease) increase in cash and cash equivalents	0			17,642			4,734			0			22,376
Cash and cash equivalents at beginning of year	17			9,653			40,700			0			50,370
Cash and cash equivalents at end of period	$	17		$	27,295		$	45,434		$	0		$	72,746

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Derivatives and Hedging Activities (Policies)

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives offsetting fair value amounts policy

We have made an accounting policy election to not offset derivative fair value amounts with the fair value amounts for the right to reclaim cash collateral under our master netting arrangement.

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Financial Statement Presentation (Cash Dividends Declared And Paid) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Date Declared	Feb. 28, 2013	Feb. 23, 2012
Date Paid	Apr. 01, 2013	Apr. 02, 2012
Per Share Amount	$ 0.90	$ 0.75

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Financial Statement Presentation (Tables)

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Cash Dividends Declared and Paid

Cash dividends for the three months ended March 31, 2013 and March 31, 2012 were declared and paid as shown in the table below.

Year	Date Declared	Date Paid	Per Share Amount
2013	February 28, 2013	April 1, 2013	$	0.90
2012	February 23, 2012	April 2, 2012	0.75

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Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock and Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Special Cash Dividend [Member]	Special Cash Dividend [Member] Retained Earnings [Member]	Ordinary Cash Dividends [Member]	Ordinary Cash Dividends [Member] Retained Earnings [Member]
Balance at Dec. 31, 2011	$ 549,593	$ 64	$ (98,732)	$ 648,261
Balance (in shares) at Dec. 31, 2011		13,404,831
Net income	239,593			239,593
Other comprehensive loss	(11,957)		(11,957)
Cash dividends					(335,447)	(335,447)	(40,234)	(40,234)
Stock-based compensation (in shares)		13,046
Stock-based compensation	657	657
Balance at Dec. 31, 2012	402,205	721	(110,689)	512,173
Balance (in shares) at Dec. 31, 2012	13,417,877	13,417,877
Net income	67,835			67,835
Other comprehensive loss	(16,692)		(16,692)
Cash dividends							(11,998)	(11,998)
Repurchases of common stock (in shares)		(90,800)
Repurchases of common stock	(23,029)	(969)		(22,060)
Stock-based compensation (in shares)
Stock-based compensation	248	248
Balance at Mar. 31, 2013	$ 418,569	$ 0	$ (127,381)	$ 545,950
Balance (in shares) at Mar. 31, 2013	13,327,077	13,327,077

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Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 67,835		$ 66,547		$ 239,593
Pension plans and other postretirement benefits:
Amortization of prior service cost included in net periodic benefit cost, net of income tax expense of $2 in 2013 and $10 in 2012	2	[1]	5	[1]
Amortization of actuarial net loss included in net periodic benefit cost, net of income tax expense of $794 in 2013 and $545 in 2012	1,363	[1]	1,031	[1]
Amortization of transition obligation included in net periodic benefit cost, net of income tax expense of $3 in 2013 and 2012	10	[1]	10	[1]
Total pension plans and other postretirement benefits	1,375		1,046		(19,723)
Derivative instruments:
Unrealized loss on derivative instruments, net of income tax benefit of $89 in 2012	0		(139)		(330)
Reclassification adjustments for losses on derivative instruments included in net income, net of income tax expense of $135 in 2013 and $155 in 2012	213		244		893
Total derivative instruments	213		105		563
Foreign currency translation adjustments, net of income tax (benefit) expense of ($674) in 2013 and $472 in 2012	(18,280)		6,669		7,567
Unrealized gain on marketable securities, net of income tax expense of $164 in 2012	0		265		676
Other comprehensive (loss) income	(16,692)		8,085		(11,957)
Comprehensive income	$ 51,143		$ 74,632

[1] (a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 4 in this Form 10-Q and Note 19 in our 2012 Annual Report for further information.

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Contractual Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Contractual Commitments and Contingencies

Contractual Commitments and Contingencies

Information on certain contractual commitments and contingencies follows.

Litigation

We are involved in legal proceedings that are incidental to our business and include administrative or judicial actions seeking remediation under environmental laws, such as Superfund. Some of these legal proceedings relate to environmental matters and involve governmental authorities. 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 operation, financial condition, or cash flows.

As we previously disclosed, the United States Department of Justice has advised us that it is conducting a review of certain of our foreign business activities in relation to compliance with relevant U.S. economic sanctions programs and anti-corruption laws, as well as certain historical conduct in the domestic U.S. market, and has requested certain information in connection with such review. We are cooperating with the investigation. In connection with such cooperation, we have voluntarily agreed to provide certain information and are conducting an internal review for that purpose.

Environmental

In 2000, the Environmental Protection Agency (EPA) named us as a potentially responsible party (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. The Sauget Area 2 Sites PRPs received notice of approval from the EPA of the Remedial Investigation report on February 27, 2009, notice of approval of the October 2009 Human Health Risk Assessment on December 17, 2009, and approval of the Feasibility Study (FS) report on April 3, 2013. We have accrued our estimated proportional share of the expenses for the FS, as well as our best estimate of our proportional share of the remediation liability proposed in our ongoing discussions and submissions with the agencies involved. 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, 2013. The amount accrued for this site is not material.

The accruals for environmental remediation, dismantling, and decontamination at our most significant environmental remediation sites are shown below. At the former TEL plant site shown in the table below, we have completed significant environmental remediation, although we will be monitoring and treating the site for an extended period. The accruals below have been discounted to present value, and include an inflation factor in the estimate. The remaining environmental liabilities not shown separately below are not discounted.

	March 31, 2013									December 31, 2012
(in millions)	Former TEL Plant Site, Louisiana			Houston, Texas Plant Site			Superfund Site, Louisiana			Former TEL Plant Site, Louisiana			Houston, Texas Plant Site			Superfund Site, Louisiana
Accrual, discounted	$	5.5		$	6.0		$	3.2		$	5.6		$	6.1		$	3.2
Accrual, undiscounted	6.8			9.1			4.4			6.9			9.3			4.4
Discount rate for accrual	3		%	3		%	3		%	3		%	3		%	3		%
Expected future payments:
2013	$	0.6		$	0.7		$	0.0
2014	0.8			0.2			0.0
2015	0.6			0.2			0.2
2016	0.5			0.2			0.3
2017	0.6			0.2			0.3
Thereafter	3.7			7.6			3.6

Of the total accrual at the Houston, Texas plant site, $5.8 millionat both March 31, 2013 and December 31, 2012 relates to remediation. Of the total remediation, $5.6 million at both March 31, 2013 and December 31, 2012 relates to remediation of groundwater and soil.

We accrue for environmental remediation and monitoring activities for which costs can be reasonably estimated and are probable. These estimates are based on an assessment of the site, available clean-up methods, and prior experience in handling remediation. While we believe we are currently fully accrued for known environmental issues, it is possible that unexpected future costs could have a significant impact on our financial position, results of operation, and cash flows.

Our total accruals for environmental remediation were approximately $19.5 million at March 31, 2013 and $19.7 million at December 31, 2012. In addition to the accruals for environmental remediation, we also have accruals for dismantling and decommissioning costs of $500 thousand at both March 31, 2013 and December 31, 2012.

Letters of Credit and Guarantees

We have agreements with several financial institutions that provide guarantees for certain business activities of our subsidiaries, including performance, insurance, credit, lease, and customs and excise guarantees. The parent company provides guarantees of the subsidiaries' performance under these agreements and also provides a guarantee for repayment of lines of credit for subsidiaries in China and India. Guarantees outstanding under all of these agreements at March 31, 2013 are $14 million. At March 31, 2013, $3.1 million of these guarantees are secured by letters of credit, all of which were issued under the $100 million letter of credit sub-facility of our revolving credit facility. See Note 7 for further information. The letters of credit relate to insurance and performance guarantees. The maximum potential amount of future payments under all other guarantees not secured by letters of credit at March 31, 2013 is $21 million. We have no liability accrued for these guarantees, however there is $5.2 million drawn on lines of credit in China and India, which is recorded in Long-term debt, current portion on the Consolidated Balance Sheets. See Note 7 for further information. We accrue for potential liabilities when a future payment is probable and the range of loss can be reasonably estimated.

Expiration dates of the letters of credit and certain guarantees range from 2013 to 2021. Some of the guarantees have no expiration date. We renew letters of credit as necessary.

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Document And Entity Information	3 Months Ended
	Mar. 31, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
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	13,327,077

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Derivatives and Hedging Activities

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

Derivatives and Hedging Activities

We are exposed to certain risks arising from both our business operations and economic conditions. We primarily manage our exposures to a wide variety of business and operational risks through management of our core business activities.

We manage certain economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of our debt funding, as well as through the use of derivative financial instruments. Specifically, we have entered into interest rate swaps to manage our exposure to interest rate movements.

Our foreign operations expose us to fluctuations of foreign exchange rates. These fluctuations may impact the value of our cash receipts and payments as compared to our reporting currency, the U.S. Dollar. To manage this exposure, we sometimes enter into foreign currency forward contracts to minimize currency exposure due to cash flows from foreign operations.

Cash Flow Hedge of Interest Rate Risk

In January 2010, we entered into an interest rate swap to manage our exposure to interest rate movements on the mortgage loan and to reduce variability in interest expense. This mortgage loan interest rate swap terminated with the payoff of the mortgage loan on May 1, 2012. Further information on the mortgage loan is in Note 12 of our 2012 Annual Report. We also had an interest rate swap to manage our exposure to interest rate movements on the Foundry Park I construction loan and to add stability to capitalized interest expense. The Foundry Park I construction loan interest rate swap matured on January 1, 2010. Both interest rate swaps were designated and qualified as cash flow hedges. As such, the effective portion of changes in the fair value of the swaps was recorded in accumulated other comprehensive loss and is subsequently being reclassified into earnings in the period that the hedged forecasted transaction affects earnings. Any ineffective portion of changes in the fair value of the swap was recognized immediately in earnings.

The accumulated unrealized loss, net of tax, related to the fair value of the mortgage loan interest rate swap is recorded in accumulated other comprehensive loss in shareholders’ equity on the Consolidated Balance Sheets and amounted to approximately $1.5 million at March 31, 2013 and $1.7 million at December 31, 2012. The amount remaining in accumulated other comprehensive loss related to the mortgage loan interest rate swap is being recognized in the Consolidated Statements of Income over the original term of the mortgage loan agreement through January 29, 2015. Also recorded as a component of accumulated other comprehensive loss in shareholders’ equity on the Consolidated Balance Sheets is the accumulated loss related to the construction loan interest rate swap of approximately $2.5 million, net of tax, at both March 31, 2013 and December 31, 2012. The amount remaining in accumulated other comprehensive loss related to the construction loan interest rate swap is being recognized in the Consolidated Statements of Income over the depreciable life of the office building. Approximately $900 thousand, net of tax, currently recognized in accumulated other comprehensive loss related to both the construction loan interest rate swap and the mortgage loan interest rate swap is expected to be reclassified into earnings over the next twelve months.

Non-designated Hedges

On June 25, 2009, we entered into an interest rate swap with Goldman Sachs in the notional amount of $97 million and with a maturity date of January 19, 2022 (Goldman Sachs interest rate swap). NewMarket entered into the Goldman Sachs interest rate swap in connection with the termination of a loan application and related rate lock agreement between Foundry Park I and Principal Commercial Funding II, LLC (Principal). When the rate lock agreement was originally executed in 2007, Principal simultaneously entered into an interest rate swap with a third party to hedge Principal’s exposure to fluctuation in the ten-year United States Treasury Bond rate. Upon the termination of the rate lock agreement on June 25, 2009, Goldman Sachs both assumed Principal’s position with the third party and entered into an offsetting interest rate swap with NewMarket. Under the terms of this interest rate swap, NewMarket is making fixed rate payments at 5.3075% and Goldman Sachs makes variable rate payments based on three-month LIBOR. We have collateralized this exposure through cash deposits posted with Goldman Sachs amounting to $33.8 million at March 31, 2013 and $37.7 million at December 31, 2012.

We have made an accounting policy election to not offset derivative fair value amounts with the fair value amounts for the right to reclaim cash collateral under our master netting arrangement. We elected not to use hedge accounting for the Goldman Sachs interest rate swap, and therefore, immediately recognize any change in the fair value of this derivative financial instrument directly in earnings.

*****

The table below presents the fair value of our derivative financial instruments, as well as their classification on the Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012.

Asset Derivatives

Liability Derivatives

March 31, 2013

December 31, 2012

March 31, 2013

December 31, 2012

(in thousands)

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Derivatives Not Designated as Hedging Instruments

Goldman Sachs interest rate swap

$

0

$

0

Accrued expenses and Other noncurrent liabilities

$

29,548

Accrued expenses and Other noncurrent liabilities

$

32,761

The total fair value reflected in the table above includes amounts recorded in accrued expenses of approximately$0.9 million at March 31, 2013 and $2.3 million at December 31, 2012 for the Goldman Sachs interest rate swap.

The tables below present the effect of our derivative financial instruments on the Consolidated Statements of Income.

Effect of Derivative Instruments on the Consolidated Statements of Income

Designated Cash Flow Hedges

(in thousands)

Derivatives in Cash Flow Hedging Relationship	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)					Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Three Months Ended March 31,						Three Months Ended March 31,							Three Months Ended March 31,
	2013		2012				2013			2012				2013		2012
Mortgage loan interest rate swap	$	0	$	(228	)	Interest and financing expenses	$	(327	)	$	(378	)		$	0	$	0
Construction loan interest rate swap	$	0	$	0		Cost of rental	$	(21	)	$	(21	)		$	0	$	0

Effect of Derivative Instruments on the Consolidated Statements of Income

Non-Designated Derivatives

(in thousands)

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in  Income on Derivatives	Amount of Gain (Loss) Recognized in  Income on Derivatives
		Three Months Ended March 31,
		2013		2012
Goldman Sachs interest rate swap	Other income, net	$	678	$	1,735

Credit-risk Related Contingent Features

The agreement we have with our current derivative counterparty contains a provision where we could be declared in default on our derivative obligation if repayment of indebtedness is accelerated by our lender(s) due to our default on the indebtedness.

As of March 31, 2013, the fair value of the derivative in a net liability position related to this agreement, which includes accrued interest but excludes any adjustment for nonperformance risk, was $29.4 million. We have minimum collateral posting thresholds with the counterparty and have posted cash collateral of $33.8 million as of March 31, 2013. If required, we could have settled our obligations under the agreement at the termination value of $29.4 million at March 31, 2013.

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Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Amortization of prior service cost included in net periodic benefit cost, income tax expense	$ 2	$ 10
Amortization of actuarial net loss included in net periodic benefit cost, income tax expense	794	545
Amortization of transition obligation included in net periodic benefit cost, income tax expense	3	3
Unrealized loss on derivative instruments, income tax benefit		(89)
Reclassification adjustments for losses on derivative instruments included in net income, income tax expense	135	155
Foreign currency translation adjustments, income tax (benefit) expense	(674)	472
Unrealized gain on marketable securities, income tax expense		$ 164

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Segment Information

3 Months Ended

Mar. 31, 2013

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 contract manufacturing performed by Ethyl Corporation (Ethyl).

Consolidated Revenue by Segment

	Three Months Ended March 31,
(in thousands)	2013		2012
Petroleum additives
Lubricant additives	$	452,672	$	444,545
Fuel additives	105,728		113,147
Total	558,400		557,692
Real estate development	2,858		2,858
All other	1,350		2,129
Consolidated revenue	$	562,608	$	562,679

Segment Operating Profit

	Three Months Ended March 31,
(in thousands)	2013			2012
Petroleum additives	$	102,028		$	107,154
Real estate development	1,790			1,789
All other	(401		)	519
Segment operating profit	103,417			109,462
Corporate, general, and administrative expenses	(5,216		)	(5,505		)
Interest and financing expenses, net	(5,109		)	(4,482		)
Gain on interest rate swap agreement (a)	678			1,735
Loss on early extinguishment of debt (b)	0			(3,221		)
Other income, net	103			814
Income before income tax expense	$	93,873		$	98,803

(a) The gain on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

(b) In March 2012, we entered into a $650 millionfive-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

Segment Depreciation and Amortization

	Three Months Ended March 31,
(in thousands)	2013		2012
Petroleum additives	$	9,829	$	8,797
Real estate development	1,295		946
All other and corporate	672		739
Total depreciation and amortization	$	11,796	$	10,482

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Asset Retirement Obligations

3 Months Ended

Mar. 31, 2013

Asset Retirement Obligation [Abstract]

Asset Retirement Obligations

Asset Retirement Obligations

Our asset retirement obligations are related primarily to past tetraethyl lead (TEL) operations. The following table illustrates the activity associated with our asset retirement obligations for the three months ended March 31, 2013 and March 31, 2012.

(in thousands)	2013			2012
Asset retirement obligations, January 1	$	2,800		$	3,297
Accretion expense	30			43
Liabilities settled	(297		)	(128		)
Changes in expected cash flows and timing	185			98
Asset retirement obligations, March 31	$	2,718		$	3,310

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Fair Value Measurements (Policy)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

We determine the fair value of the derivative instruments shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. The analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs.

The fair value of the interest rate swap is determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates derived from observable market interest rate curves. In determining the fair value measurements, we incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk and the counterparties’ nonperformance risk.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivatives utilizes Level 3 inputs. These Level 3 inputs include estimates of current credit spreads to evaluate the likelihood of default by both us and the counterparties to the derivatives. As of March 31, 2013 and December 31, 2012, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivatives and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivatives. Accordingly, we have determined that our derivative valuations should be classified in Level 2 of the fair value hierarchy.

We have made an accounting policy election to measure credit risk of any derivative financial instruments subject to master netting agreements on a net basis by counterparty portfolio.

Long-Term Debt

We record the value of our long-term debt at historical cost.

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Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2013

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			Derivative Instruments			Foreign Currency Translation Adjustments			Marketable Securities			Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2011	$	(76,416	)	$	(4,736	)	$	(17,944	)	$	364		$	(98,732	)
Other comprehensive income (loss) before reclassifications	(24,291		)	(330		)	7,567			676			(16,378		)
Amounts reclassified from accumulated other comprehensive loss	4,568			893			0			(1,040		)	4,421
Other comprehensive income (loss)	(19,723		)	563			7,567			(364		)	(11,957		)
Balance at December 31, 2012	(96,139		)	(4,173		)	(10,377		)	0			(110,689		)
Other comprehensive income (loss) before reclassifications	0			0			(18,280		)	0			(18,280		)
Amounts reclassified from accumulated other comprehensive loss	1,375			213			0			0			1,588
Other comprehensive income (loss)	1,375			213			(18,280		)	0			(16,692		)
Balance at March 31, 2013	$	(94,764	)	$	(3,960	)	$	(28,657	)	$	0		$	(127,381	)

The following table illustrates the amounts, net of tax, reclassified out of each component of accumulated other comprehensive loss and their location within the respective line items on the Consolidated Statements of Income.

(in thousands)	Amount Reclassified from Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss Component	Three Months Ended March 31,				Affected Line Item on the Consolidated Statements of Income
	2013		2012
Pension plans and other postretirement benefits:
Amortization of prior service cost	$	2	$	5	(a)
Amortization of actuarial net loss	1,363		1,031		(a)
Amortization of transition obligation	10		10		(a)
Total pension plans and other postretirement benefits	1,375		1,046
Derivative instruments:
Amortization of mortgage loan interest rate swap	200		231		Interest and financing expenses, net
Amortization of construction loan interest rate swap	13		13		Cost of rental
Total derivative instruments	213		244
Total reclassifications for the period	$	1,588	$	1,290

(a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 4 in this Form 10-Q and Note 19 in our 2012 Annual Report for further information.

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Intangibles (Net of Amortization) and Goodwill

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Intangibles (Net of Amortization) and Goodwill

Intangibles (Net of Amortization) and Goodwill

	Identifiable Intangibles
	March 31, 2013				December 31, 2012
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizing intangible assets
Formulas and technology	$	91,526	$	76,106	$	91,662	$	74,762
Contracts	9,593		7,079		9,593		6,734
Customer bases	7,006		2,509		7,021		2,400
Trademarks and trade names	1,560		492		1,586		426
Goodwill	4,879				5,002
	$	114,564	$	86,186	$	114,864	$	84,322

All of the intangibles relate to the petroleum additives segment. The change in the gross carrying amount between 2012 and 2013 is due to foreign currency fluctuations. There is no accumulated goodwill impairment.

Amortization expense was (in millions):

Three months ended March 31, 2013	$	1.9
Three months ended March 31, 2012	1.9

Estimated amortization expense for the remainder of 2013, as well as annual amortization expense related to our intangible assets for the next five years is expected to be (in millions):

2013	$	5.2
2014	6.2
2015	5.8
2016	1.9
2017	0.7
2018	0.7

Generally, we amortize the cost of the customer base intangibles by an accelerated method and the cost of the remaining intangible assets by the straight-line method over their estimated economic lives. We generally amortize contracts over 1.5 to 10 years; customer bases over 20 years; and formulas and technology over 5 to 20 years. Trademarks and trade names are amortized over 10 years.

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Consolidating Financial Information (Narrative) (Details)	Mar. 31, 2013
4.10% Senior Notes [Member] | Senior Notes [Member]
Senior notes, interest rate	4.10%
Guarantor Subsidiaries [Member]
Percent ownership interest by Parent Company	100.00%
Non-Guarantor Subsidiaries [Member]
Percent ownership interest by Parent Company	100.00%

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Pension Plans and Other Postretirement Benefits

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [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, 2013, as well as expected remaining cash contributions for the year endingDecember 31, 2013 for both our domestic and foreign pension plans and postretirement benefit plans.

(in thousands)	Actual Cash Contributions for Three Months Ended March 31, 2013		Expected Remaining Cash Contributions for Year Ending December 31, 2013
Domestic plans
Pension benefits	$	5,635	$	16,915
Postretirement benefits	409		1,228
Foreign plans
Pension benefits	1,938		4,930
Postretirement benefits	49		147

The tables below present information on net periodic benefit cost for our pension and postretirement benefit plans.

	Domestic
	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,
(in thousands)	2013			2012			2013			2012
Service cost	$	2,663		$	2,157		$	499		$	522
Interest cost	2,384			2,359			682			787
Expected return on plan assets	(3,617		)	(3,301		)	(364		)	(373		)
Amortization of prior service cost	4			53			2			2
Amortization of actuarial net loss	1,801			1,292			0			0
Net periodic benefit cost	$	3,235		$	2,560		$	819		$	938

	Foreign
	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,
(in thousands)	2013			2012			2013		2012
Service cost	$	1,354		$	1,167		$	8	$	7
Interest cost	1,357			1,333			27		27
Expected return on plan assets	(1,729		)	(1,506		)	0		0
Amortization of prior service credit	(2		)	(38		)	0		0
Amortization of transition obligation	0			0			13		13
Amortization of actuarial net loss	354			276			10		8
Net periodic benefit cost	$	1,334		$	1,232		$	58	$	55

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Earnings Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Options and stock-based compensation awards are not included in the computation of diluted earnings per share if the impact on earnings per share would be anti-dilutive. We had 11,940 shares of nonvested restricted stock that were excluded from the calculation of diluted earnings per share for the three months ended March 31, 2013. We had no anti-dilutive options or stock-based compensation awards that were excluded from the calculation of diluted earnings per share for the three months ended March 31, 2012.

The nonvested restricted stock is considered a participating security since the stock contains nonforfeitable rights to dividends. As such, we use the two-class method to compute 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)	2013		2012
Earnings per share numerator:
Net income attributable to common shareholders before allocation of earnings to participating securities	$	67,835	$	66,547
Earnings allocated to participating securities	61		0
Net income attributable to common shareholders after allocation of earnings to participating securities	$	67,774	$	66,547
Earnings per share denominator:
Weighted-average number of shares of common stock outstanding - basic and diluted	13,376		13,405
Earnings per share - basic and diluted	$	5.07	$	4.96

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Long-term Debt

3 Months Ended

Mar. 31, 2013

Long-term Debt and Capital Lease Obligations [Abstract]

Long-term Debt

Long-term Debt

(in thousands)	March 31, 2013			December 31, 2012
Senior notes - 4.10% due 2022	$	349,422		$	349,407
Revolving credit facility	76,000			75,000
Lines of credit	5,193			4,382
	430,615			428,789
Current maturities of long-term debt	(5,193		)	(4,382		)
	$	425,422		$	424,407

At March 31, 2013, we had outstanding senior notes in the aggregate principal amount of $350 million that bear interest at a fixed rate of 4.10% and are due in 2022 (4.10% senior notes). During March 2013, we registered these 4.10% senior notes under the Securities Act of 1933 and commenced an offer to exchange the previously unregistered 4.10% senior notes that were outstanding at December 31, 2012 for an equal aggregate principal amount.

The following table provides information related to the unused portion of our revolving credit facility in effect at March 31, 2013 and December 31, 2012:

(in millions)	March 31, 2013		December 31, 2012
Maximum borrowing capacity under the revolving credit facility	$	650.0	$	650.0
Outstanding borrowings under the revolving credit facility	76.0		75.0
Outstanding letters of credit	3.1		3.1
Unused portion of revolving credit facility	$	570.9	$	571.9

For further information on the outstanding letters of credit, see Note 8. The average interest rate for borrowings under our revolving credit facility was 2.16% during the first three months of 2013 and 1.84% during 2012.

We were in compliance with all covenants under our debt agreements at March 31, 2013 and at December 31, 2012.

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Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash provided from (used in) operating activities	$ 27,128	$ 63,090
Cash flows from investing activities:
Capital expenditures	(16,109)	(7,432)
Deposits for interest rate swap	(2,982)	(5,079)
Return of deposits for interest rate swap	6,850	8,340
Payments on settlement of interest rate swap	(2,617)	(2,574)
Receipts from settlement of interest rate swap	82	100
Cash provided from (used in) investing activities	(14,776)	(6,645)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000	(22,000)
Repayment of Foundry Park I mortgage loan	0	(715)
Net borrowings (repayments) under lines of credit	811	(223)
Dividends paid	(11,998)	(10,054)
Debt issuance costs	(1,115)	(2,351)
Repurchases of common stock	(22,508)	0
Issuance of intercompany note payable, net	0
Repayment of intercompany note payable, net	0
Financing from affiliated companies	0	0
Cash provided from (used in) financing activities	(33,810)	(35,343)
Effect of foreign exchange on cash and cash equivalents	(3,658)	1,274
(Decrease) increase in cash and cash equivalents	(25,116)	22,376
Cash and cash equivalents at beginning of year	89,129	50,370
Cash and cash equivalents at end of period	64,013	72,746
Parent Company [Member]
Cash provided from (used in) operating activities	92,885	(19,495)
Cash flows from investing activities:
Capital expenditures	0	0
Deposits for interest rate swap	(2,982)	(5,079)
Return of deposits for interest rate swap	6,850	8,340
Payments on settlement of interest rate swap	(2,617)	(2,574)
Receipts from settlement of interest rate swap	82	100
Cash provided from (used in) investing activities	1,333	787
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000	(22,000)
Repayment of Foundry Park I mortgage loan		0
Net borrowings (repayments) under lines of credit	0	0
Dividends paid	(11,998)	(10,054)
Debt issuance costs	(1,115)	(2,351)
Repurchases of common stock	(22,508)
Issuance of intercompany note payable, net	0
Repayment of intercompany note payable, net	3,006
Financing from affiliated companies	(67,601)	53,113
Cash provided from (used in) financing activities	(99,216)	18,708
Effect of foreign exchange on cash and cash equivalents	0	0
(Decrease) increase in cash and cash equivalents	(4,998)	0
Cash and cash equivalents at beginning of year	5,001	17
Cash and cash equivalents at end of period	3	17
Non-Guarantor Subsidiaries [Member]
Cash provided from (used in) operating activities	(174)	12,483
Cash flows from investing activities:
Capital expenditures	(7,726)	(2,388)
Deposits for interest rate swap	0	0
Return of deposits for interest rate swap	0	0
Payments on settlement of interest rate swap	0	0
Receipts from settlement of interest rate swap	0	0
Cash provided from (used in) investing activities	(7,726)	(2,388)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	0	0
Repayment of Foundry Park I mortgage loan		0
Net borrowings (repayments) under lines of credit	811	(223)
Dividends paid	(9,916)	(5,857)
Debt issuance costs	0	0
Repurchases of common stock	0
Issuance of intercompany note payable, net	3,135
Repayment of intercompany note payable, net	0
Financing from affiliated companies	0	0
Cash provided from (used in) financing activities	(5,970)	(6,080)
Effect of foreign exchange on cash and cash equivalents	(3,187)	719
(Decrease) increase in cash and cash equivalents	(17,057)	4,734
Cash and cash equivalents at beginning of year	76,926	40,700
Cash and cash equivalents at end of period	59,869	45,434
Guarantor Subsidiaries [Member]
Cash provided from (used in) operating activities	76,432	75,997
Cash flows from investing activities:
Capital expenditures	(8,383)	(5,044)
Deposits for interest rate swap	0	0
Return of deposits for interest rate swap	0	0
Payments on settlement of interest rate swap	0	0
Receipts from settlement of interest rate swap	0	0
Cash provided from (used in) investing activities	(8,383)	(5,044)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	0	0
Repayment of Foundry Park I mortgage loan		(715)
Net borrowings (repayments) under lines of credit	0	0
Dividends paid	(86,585)	(38)
Debt issuance costs	0	0
Repurchases of common stock	0
Issuance of intercompany note payable, net	(3,135)
Repayment of intercompany note payable, net	(3,006)
Financing from affiliated companies	22,087	(53,113)
Cash provided from (used in) financing activities	(70,639)	(53,866)
Effect of foreign exchange on cash and cash equivalents	(471)	555
(Decrease) increase in cash and cash equivalents	(3,061)	17,642
Cash and cash equivalents at beginning of year	7,202	9,653
Cash and cash equivalents at end of period	4,141	27,295
Total Consolidating Adjustments [Member]
Cash provided from (used in) operating activities	(142,015)	(5,895)
Cash flows from investing activities:
Capital expenditures	0	0
Deposits for interest rate swap	0	0
Return of deposits for interest rate swap	0	0
Payments on settlement of interest rate swap	0	0
Receipts from settlement of interest rate swap	0	0
Cash provided from (used in) investing activities	0	0
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	0	0
Repayment of Foundry Park I mortgage loan		0
Net borrowings (repayments) under lines of credit	0	0
Dividends paid	96,501	5,895
Debt issuance costs	0	0
Repurchases of common stock	0
Issuance of intercompany note payable, net	0
Repayment of intercompany note payable, net	0
Financing from affiliated companies	45,514	0
Cash provided from (used in) financing activities	142,015	5,895
Effect of foreign exchange on cash and cash equivalents	0	0
(Decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	$ 0	$ 0

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

	Carrying Amount in Consolidated Balance Sheets				Fair Value Measurements Using
			Fair Value		Level 1		Level 2		Level 3
(in thousands)	March 31, 2013
Cash and cash equivalents	$	64,013	$	64,013	$	64,013	$	0	$	0
Cash deposit for collateralized interest rate swap	33,827		33,827		33,827		0		0
Interest rate swap liability	29,548		29,548		0		29,548		0
	December 31, 2012
Cash and cash equivalents	$	89,129	$	89,129	$	89,129	$	0	$	0
Cash deposit for collateralized interest rate swap	37,694		37,694		37,694		0		0
Interest rate swap liability	32,761		32,761		0		32,761		0

Estimated Fair Value Of Long-Term Debt

	March 31, 2013				December 31, 2012
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current maturities	$	430,615	$	442,150	$	428,789	$	436,777

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Contractual Commitments and Contingencies (Letters Of Credit And Guarantees) (Details) (USD $)		3 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2012 Revolving Credit Facility [Member]	Mar. 14, 2012 Revolving Credit Facility [Member]	Dec. 31, 2011 Revolving Credit Facility [Member]	Mar. 31, 2013 Letters of Credit [Member] Revolving Credit Facility [Member]	Mar. 31, 2013 Foreign Lines of Credit [Member]
Lettters Of Credit And Guarantees [Line Items]
Outstanding guarantees	$ 14,000,000
Outstanding letters of credit				3,100,000	3,100,000
Maximum borrowing capacity under the revolving credit facility				650,000,000	650,000,000.0	650,000,000	300,000,000	100,000,000
Maximum potential amount of future payments under all other guarantees not secured by letters of credit	21,000,000
Draws on lines of credit									$ 5,200,000
Letters of credit and certain guarantees, expiration date		2013	2021

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Consolidating Financial Information

3 Months Ended

Mar. 31, 2013

Consolidating Financial Information [Abstract]

Consolidating Financial Information

Consolidating Financial Information

The 4.10% senior notes are guaranteed on a senior unsecured basis by our existing and future domestic subsidiaries that guarantee our obligations under our revolving credit facility and any of our other indebtedness (Guarantor Subsidiaries). The subsidiary guarantees are joint and several obligations of the Guarantor Subsidiaries. The indenture governing the 4.10% senior notes includes a provision which allows for a Guarantor Subsidiary to be released of its obligations under the subsidiary guarantee under certain conditions. Those conditions include the sale or other disposition of all or substantially all of the Guarantor Subsidiary's assets in compliance with the indenture and the release or discharge of a Guarantor Subsidiary from its obligations as a guarantor under our revolving credit facility and all of our other indebtedness. The Guarantor Subsidiaries and the subsidiaries that do not guarantee the 4.10% senior notes (the Non-Guarantor Subsidiaries) are 100% owned by NewMarket Corporation (the Parent Company). The Guarantor Subsidiaries consist of the following:

Ethyl Corporation	Afton Chemical Corporation
Ethyl Asia Pacific LLC	Afton Chemical Asia Pacific LLC
Ethyl Canada Holdings, Inc.	Afton Chemical Canada Holdings, Inc.
Ethyl Export Corporation	Afton Chemical Japan Holdings, Inc.
Ethyl Interamerica Corporation	Afton Chemical Additives Corporation
Ethyl Ventures, Inc.	NewMarket Services Corporation
Interamerica Terminals Corporation	The Edwin Cooper Corporation
Afton Chemical Intangibles LLC	Old Town LLC
NewMarket Investment Company	NewMarket Development Corporation
Foundry Park I, LLC	Foundry Park II, LLC
Gamble's Hill, LLC	Gamble's Hill Lab, LLC
Gamble's Hill Landing, LLC	Gamble's Hill Third Street, LLC
Gamble's Hill Tredegar, LLC

We conduct all of our business through and derive essentially all of our income from our subsidiaries. Therefore, our ability to make payments on the 4.10% senior notes or other obligations is dependent on the earnings and the distribution of funds from our subsidiaries.

The following sets forth the Consolidating Statements of Income and Comprehensive Income for the three months ended March 31, 2013 and March 31, 2012; Consolidating Balance Sheets as of March 31, 2013 and December 31, 2012; and Condensed Consolidating Statements of Cash Flows for the three months ended March 31, 2013 and March 31, 2012 for the Parent Company, the Guarantor Subsidiaries, and the Non-Guarantor Subsidiaries. The financial information is based on our understanding of the SEC's interpretation and application of Rule 3-10 of the SEC Regulation S-X.

The financial information may not necessarily be indicative of results of operation or financial position had the Guarantor Subsidiaries or Non-Guarantor Subsidiaries operated as independent entities. The Parent Company accounts for investments in these subsidiaries using the equity method.

NewMarket Corporation and Subsidiaries
Consolidating Statements of Income and Comprehensive Income
Three Months Ended March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Revenue:
Net sales - product	$	0		$	211,694		$	348,056		$	0		$	559,750
Rental revenue	0			2,858			0			0			2,858
	0			214,552			348,056			0			562,608
Costs:
Cost of goods sold - product	0			102,006			289,337			0			391,343
Cost of rental	0			1,068			0			0			1,068
	0			103,074			289,337			0			392,411
Gross profit	0			111,478			58,719			0			170,197
Selling, general, and administrative expenses	1,684			21,792			17,465			0			40,941
Research, development, and testing expenses	0			21,952			9,069			0			31,021
Operating (loss) profit	(1,684		)	67,734			32,185			0			98,235
Interest and financing expenses, net	4,810			(610		)	909			0			5,109
Other income (expense), net	700			3			44			0			747
(Loss) income before income taxes and equity income of subsidiaries	(5,794		)	68,347			31,320			0			93,873
Income tax (benefit) expense	(2,013		)	19,819			8,232			0			26,038
Equity income of subsidiaries	71,616			0			0			(71,616		)	0
Net income	67,835			48,528			23,088			(71,616		)	67,835
Other comprehensive (loss) income	(16,692		)	(3,514		)	(14,001		)	17,515			(16,692		)
Comprehensive income	$	51,143		$	45,014		$	9,087		$	(54,101	)	$	51,143

NewMarket Corporation and Subsidiaries
Consolidating Statements of Income and Comprehensive Income
Three Months Ended March 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Total Consolidating Adjustments			Consolidated
Revenue:
Net sales - product	$	0		$	225,709		$	334,112	$	0		$	559,821
Rental revenue	0			2,858			0		0			2,858
	0			228,567			334,112		0			562,679
Costs:
Cost of goods sold - product	0			99,176			292,899		0			392,075
Cost of rental	0			1,068			0		0			1,068
	0			100,244			292,899		0			393,143
Gross profit	0			128,323			41,213		0			169,536
Selling, general, and administrative expenses	1,450			27,819			7,639		0			36,908
Research, development, and testing expenses	0			21,120			6,775		0			27,895
Operating (loss) profit	(1,450		)	79,384			26,799		0			104,733
Interest and financing expenses, net	3,377			87			1,018		0			4,482
Loss on early extinguishment of debt	3,221			0			0		0			3,221
Other income (expense), net	1,744			(31		)	60		0			1,773
(Loss) income before income taxes and equity income of subsidiaries	(6,304		)	79,266			25,841		0			98,803
Income tax (benefit) expense	(2,584		)	29,124			5,716		0			32,256
Equity income of subsidiaries	70,267			0			0		(70,267		)	0
Net income	66,547			50,142			20,125		(70,267		)	66,547
Other comprehensive (loss) income	8,085			2,778			4,730		(7,508		)	8,085
Comprehensive income	$	74,632		$	52,920		$	24,855	$	(77,775	)	$	74,632

NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	3		$	4,141		$	59,869		$	0		$	64,013
Trade and other accounts receivable, net	3,562			121,399			206,194			0			331,155
Amounts due from affiliated companies	21,824			78,413			16,809			(117,046		)	0
Inventories	0			124,731			196,608			0			321,339
Deferred income taxes	2,079			4,690			682			0			7,451
Prepaid expenses and other current assets	10,591			21,447			2,218			0			34,256
Total current assets	38,059			354,821			482,380			(117,046		)	758,214
Amounts due from affiliated companies	55,928			111,833			0			(167,761		)	0
Property, plant, and equipment, at cost	0			840,821			237,837			0			1,078,658
Less accumulated depreciation and amortization	0			584,102			133,962			0			718,064
Net property, plant, and equipment	0			256,719			103,875			0			360,594
Investment in consolidated subsidiaries	862,545			0			0			(862,545		)	0
Prepaid pension cost	0			0			12,800			0			12,800
Deferred income taxes	51,155			0			6,909			(4,104		)	53,960
Other assets and deferred charges	42,285			23,863			1,295			0			67,443
Intangibles (net of amortization) and goodwill	0			22,031			6,347			0			28,378
Total assets	$	1,049,972		$	769,267		$	613,606		$	(1,151,456	)	$	1,281,389
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	25		$	72,851		$	42,799		$	0		$	115,675
Accrued expenses	10,579			37,399			17,571			0			65,549
Dividends payable	10,282			0			0			0			10,282
Book overdraft	0			5,149			0			0			5,149
Amounts due to affiliated companies	45,626			46,097			25,323			(117,046		)	0
Long-term debt, current portion	0			0			5,193			0			5,193
Income taxes payable	4,955			5,789			14,550			0			25,294
Total current liabilities	71,467			167,285			105,436			(117,046		)	227,142
Long-term debt	425,422			0			0			0			425,422
Amounts due to affiliated companies	0			63,954			103,807			(167,761		)	0
Other noncurrent liabilities	134,514			41,706			38,140			(4,104		)	210,256
Total liabilities	631,403			272,945			247,383			(288,911		)	862,820
Shareholders' equity:
Common stock and paid-in capital	0			388,282			71,322			(459,604		)	0
Accumulated other comprehensive loss	(127,381		)	(22,281		)	(50,056		)	72,337			(127,381		)
Retained earnings	545,950			130,321			344,957			(475,278		)	545,950
Total shareholders' equity	418,569			496,322			366,223			(862,545		)	418,569
Total liabilities and shareholders' equity	$	1,049,972		$	769,267		$	613,606		$	(1,151,456	)	$	1,281,389

NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
December 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	5,001		$	7,202		$	76,926		$	0		$	89,129
Trade and other accounts receivable, net	4,346			116,865			175,844			0			297,055
Amounts due from affiliated companies	0			142,277			33,282			(175,559		)	0
Inventories	0			125,171			197,503			0			322,674
Deferred income taxes	2,555			5,204			693			0			8,452
Prepaid expenses and other current assets	66			16,253			1,866			0			18,185
Total current assets	11,968			412,972			486,114			(175,559		)	735,495
Amounts due from affiliated companies	58,935			56,326			0			(115,261		)	0
Property, plant, and equipment, at cost	0			833,352			237,615			0			1,070,967
Less accumulated depreciation and amortization	0			578,183			134,413			0			712,596
Net property, plant, and equipment	0			255,169			103,202			0			358,371
Investment in consolidated subsidiaries	895,029			0			0			(895,029		)	0
Prepaid pension cost	0			0			12,710			0			12,710
Deferred income taxes	53,087			0			8,451			(6,415		)	55,123
Other assets and deferred charges	46,286			23,670			2,051			0			72,007
Intangibles (net of amortization) and goodwill	0			23,784			6,758			0			30,542
Total assets	$	1,065,305		$	771,921		$	619,286		$	(1,192,264	)	$	1,264,248
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	206		$	75,483		$	43,609		$	0		$	119,298
Accrued expenses	8,367			51,577			19,117			0			79,061
Book overdraft	0			3,906			0			0			3,906
Amounts due to affiliated companies	91,403			55,437			28,719			(175,559		)	0
Long-term debt, current portion	0			0			4,382			0			4,382
Income taxes payable	0			55			9,969			0			10,024
Total current liabilities	99,976			186,458			105,796			(175,559		)	216,671
Long-term debt	424,407			0			0			0			424,407
Amounts due to affiliated companies	0			8,024			107,237			(115,261		)	0
Other noncurrent liabilities	138,717			49,280			39,383			(6,415		)	220,965
Total liabilities	663,100			243,762			252,416			(297,235		)	862,043
Shareholders' equity:
Common stock and paid-in capital	721			388,282			71,322			(459,604		)	721
Accumulated other comprehensive loss	(110,689		)	(18,767		)	(36,055		)	54,822			(110,689		)
Retained earnings	512,173			158,644			331,603			(490,247		)	512,173
Total shareholders' equity	402,205			528,159			366,870			(895,029		)	402,205
Total liabilities and shareholders' equity	$	1,065,305		$	771,921		$	619,286		$	(1,192,264	)	$	1,264,248

NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Three Months Ended March 31, 2013
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities	$	92,885		$	76,432		$	(174	)	$	(142,015	)	$	27,128
Cash flows from investing activities:
Capital expenditures	0			(8,383		)	(7,726		)	0			(16,109		)
Deposits for interest rate swap	(2,982		)	0			0			0			(2,982		)
Return of deposits for interest rate swap	6,850			0			0			0			6,850
Payments on settlement of interest rate swap	(2,617		)	0			0			0			(2,617		)
Receipts from settlement of interest rate swap	82			0			0			0			82
Cash provided from (used in) investing activities	1,333			(8,383		)	(7,726		)	0			(14,776		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	1,000			0			0			0			1,000
Net borrowings (repayments) under lines of credit	0			0			811			0			811
Dividends paid	(11,998		)	(86,585		)	(9,916		)	96,501			(11,998		)
Debt issuance costs	(1,115		)	0			0			0			(1,115		)
Repurchases of common stock	(22,508		)	0			0			0			(22,508		)
Issuance of intercompany note payable, net	0			(3,135		)	3,135			0			0
Repayment of intercompany note payable, net	3,006			(3,006		)	0			0			0
Financing from affiliated companies	(67,601		)	22,087			0			45,514			0
Cash provided from (used in) financing activities	(99,216		)	(70,639		)	(5,970		)	142,015			(33,810		)
Effect of foreign exchange on cash and cash equivalents	0			(471		)	(3,187		)	0			(3,658		)
(Decrease) increase in cash and cash equivalents	(4,998		)	(3,061		)	(17,057		)	0			(25,116		)
Cash and cash equivalents at beginning of year	5,001			7,202			76,926			0			89,129
Cash and cash equivalents at end of period	$	3		$	4,141		$	59,869		$	0		$	64,013

NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Three Months Ended March 31, 2012
(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities	$	(19,495	)	$	75,997		$	12,483		$	(5,895	)	$	63,090
Cash flows from investing activities:
Capital expenditures	0			(5,044		)	(2,388		)	0			(7,432		)
Deposits for interest rate swap	(5,079		)	0			0			0			(5,079		)
Return of deposits for interest rate swap	8,340			0			0			0			8,340
Payments on settlement of interest rate swap	(2,574		)	0			0			0			(2,574		)
Receipts from settlement of interest rate swap	100			0			0			0			100
Cash provided from (used in) investing activities	787			(5,044		)	(2,388		)	0			(6,645		)
Cash flows from financing activities:
Net borrowings (repayments) under revolving credit facility	(22,000		)	0			0			0			(22,000		)
Repayment of Foundry Park I mortgage loan	0			(715		)	0			0			(715		)
Net borrowings (repayments) under lines of credit	0			0			(223		)	0			(223		)
Dividends paid	(10,054		)	(38		)	(5,857		)	5,895			(10,054		)
Debt issuance costs	(2,351		)	0			0			0			(2,351		)
Financing from affiliated companies	53,113			(53,113		)	0			0			0
Cash provided from (used in) financing activities	18,708			(53,866		)	(6,080		)	5,895			(35,343		)
Effect of foreign exchange on cash and cash equivalents	0			555			719			0			1,274
(Decrease) increase in cash and cash equivalents	0			17,642			4,734			0			22,376
Cash and cash equivalents at beginning of year	17			9,653			40,700			0			50,370
Cash and cash equivalents at end of period	$	17		$	27,295		$	45,434		$	0		$	72,746

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Consolidated Revenue by Segment

Consolidated Revenue by Segment

	Three Months Ended March 31,
(in thousands)	2013		2012
Petroleum additives
Lubricant additives	$	452,672	$	444,545
Fuel additives	105,728		113,147
Total	558,400		557,692
Real estate development	2,858		2,858
All other	1,350		2,129
Consolidated revenue	$	562,608	$	562,679

Segment Operating Profit

Segment Operating Profit

	Three Months Ended March 31,
(in thousands)	2013			2012
Petroleum additives	$	102,028		$	107,154
Real estate development	1,790			1,789
All other	(401		)	519
Segment operating profit	103,417			109,462
Corporate, general, and administrative expenses	(5,216		)	(5,505		)
Interest and financing expenses, net	(5,109		)	(4,482		)
Gain on interest rate swap agreement (a)	678			1,735
Loss on early extinguishment of debt (b)	0			(3,221		)
Other income, net	103			814
Income before income tax expense	$	93,873		$	98,803

(a) The gain on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

(b) In March 2012, we entered into a $650 millionfive-year unsecured revolving credit facility which replaced our previous $300 million unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes (7.125% senior notes), as well as to repay the outstanding principal amount on the Foundry Park I mortgage loan. As a result, during the three months ended March 31, 2012, we recognized a loss on early extinguishment of debt of $3.2 million from accelerated amortization of financing fees associated with the prior revolving credit facility and costs associated with redeeming the 7.125% senior notes prior to maturity.

Segment Depreciation and Amortization

Segment Depreciation and Amortization

	Three Months Ended March 31,
(in thousands)	2013		2012
Petroleum additives	$	9,829	$	8,797
Real estate development	1,295		946
All other and corporate	672		739
Total depreciation and amortization	$	11,796	$	10,482

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Long-term Debt (Schedule Of Unused Portion Of Revolving Credit Facility) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 14, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Outstanding borrowings	$ 430,615,000	$ 428,789,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under the revolving credit facility	650,000,000	650,000,000.0	650,000,000	300,000,000
Outstanding borrowings	76,000,000	75,000,000
Outstanding letters of credit	3,100,000	3,100,000
Unused portion of revolving credit facility	$ 570,900,000	$ 571,900,000

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Pension Plans and Other Postretirement Benefits (Cash Contributions Made And Expected Contributions For Domestic And Foreign Pension And Postretirement Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions, Pension benefits	$ 7,573	$ 7,355
Actual Cash Contributions, Postretirement benefits	458	628
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions, Pension benefits	5,635
Expected Remaining Cash Contributions	16,915
Domestic Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions, Postretirement benefits	409
Expected Remaining Cash Contributions	1,228
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions, Pension benefits	1,938
Expected Remaining Cash Contributions	4,930
Foreign Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Cash Contributions, Postretirement benefits	49
Expected Remaining Cash Contributions	$ 147

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 64,013	$ 89,129
Trade and other accounts receivable, less allowance for doubtful accounts ($502 in 2013 and $319 in 2012)	331,155	297,055
Inventories:
Finished goods and work-in-process	260,682	265,017
Raw materials	51,970	48,881
Stores, supplies, and other	8,687	8,776
Inventories, total	321,339	322,674
Deferred income taxes	7,451	8,452
Prepaid expenses and other current assets	34,256	18,185
Total current assets	758,214	735,495
Property, plant, and equipment, at cost	1,078,658	1,070,967
Less accumulated depreciation and amortization	718,064	712,596
Net property, plant, and equipment	360,594	358,371
Prepaid pension cost	12,800	12,710
Deferred income taxes	53,960	55,123
Other assets and deferred charges	67,443	72,007
Intangibles (net of amortization) and goodwill	28,378	30,542
Total assets	1,281,389	1,264,248
Current liabilities:
Accounts payable	115,675	119,298
Accrued expenses	65,549	79,061
Dividends payable	10,282	0
Book overdraft	5,149	3,906
Long-term debt, current portion	5,193	4,382
Income taxes payable	25,294	10,024
Total current liabilities	227,142	216,671
Long-term debt	425,422	424,407
Other noncurrent liabilities	210,256	220,965
Total liabilities	862,820	862,043
Commitments and contingencies
Shareholders’ equity:
Common stock and paid-in capital (without par value; authorized shares - 80,000,000; issued and outstanding shares - 13,327,077 at March 31, 2013 and 13,417,877 at December 31, 2012)	0	721
Accumulated other comprehensive loss	(127,381)	(110,689)
Retained earnings	545,950	512,173
Total shareholders' equity	418,569	402,205
Total liabilities and shareholders’ equity	$ 1,281,389	$ 1,264,248

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Financial Statement Presentation

3 Months Ended

Mar. 31, 2013

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, 2013 and December 31, 2012, the change in our shareholders’ equity for the three months ended March 31, 2013 and the year ended December 31, 2012, our consolidated results of operation, comprehensive income, and cash flows for the three months ended March 31, 2013 and March 31, 2012. 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, 2012 (2012 Annual Report), as filed with the Securities and Exchange Commission (SEC). The results of operation for the three month period ended March 31, 2013 are not necessarily indicative of the results to be expected for the full year ending December 31, 2013. The December 31, 2012 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.

At both March 31, 2013 and December 31, 2012, we had a book overdraft for some of our disbursement cash accounts. A book overdraft represents disbursements that have not cleared the bank accounts at the end of the reporting period. There are no agreements with the same banks to offset the presented balance. We transfer cash on an as-needed basis to fund these items as they clear the bank in subsequent periods.

Certain reclassifications have been made to the accompanying consolidated financial statements to conform to the current presentation.

Cash dividends for the three months ended March 31, 2013 and March 31, 2012 were declared and paid as shown in the table below.

Year	Date Declared	Date Paid	Per Share Amount
2013	February 28, 2013	April 1, 2013	$	0.90
2012	February 23, 2012	April 2, 2012	0.75

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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Fair Value Measurements [Line Items]
Cash and cash equivalents, Carrying Amount in Consolidated Balance Sheets	$ 64,013	$ 89,129	$ 72,746	$ 50,370
Goldman Sachs [Member]
Fair Value Measurements [Line Items]
Cash deposit for collateralized interest rate swap, Carrying Amount in Consolidated Balance Sheets	33,827	37,694
Carrying Amount in Consolidated Balance Sheets [Member]
Fair Value Measurements [Line Items]
Cash and cash equivalents, Carrying Amount in Consolidated Balance Sheets	64,013	89,129
Interest rate swap liability, Carrying Amount in Consolidated Balance Sheets	29,548	32,761
Fair Value [Member]
Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value	64,013	89,129
Interest rate swap liability, Fair Value	29,548	32,761
Fair Value [Member] | Goldman Sachs [Member]
Fair Value Measurements [Line Items]
Cash deposit for collateralized interest rate swap, Fair Value	33,827	37,694
Fair Value, Level 1 [Member]
Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value	64,013	89,129
Interest rate swap liability, Fair Value	0	0
Fair Value, Level 1 [Member] | Goldman Sachs [Member]
Fair Value Measurements [Line Items]
Cash deposit for collateralized interest rate swap, Fair Value	33,827	37,694
Fair Value, Level 2 [Member]
Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value	0	0
Interest rate swap liability, Fair Value	29,548	32,761
Fair Value, Level 2 [Member] | Goldman Sachs [Member]
Fair Value Measurements [Line Items]
Cash deposit for collateralized interest rate swap, Fair Value	0	0
Fair Value, Level 3 [Member]
Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value	0	0
Interest rate swap liability, Fair Value	0	0
Fair Value, Level 3 [Member] | Goldman Sachs [Member]
Fair Value Measurements [Line Items]
Cash deposit for collateralized interest rate swap, Fair Value	$ 0	$ 0

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Pension Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2013

Defined Benefit Plan Disclosure [Line Items]

Cash Contributions Made And Expected Remaining Contributions For Domestic And Foreign Pension And Postretirement Benefit Plans

The table below shows cash contributions made during the three months ended March 31, 2013, as well as expected remaining cash contributions for the year endingDecember 31, 2013 for both our domestic and foreign pension plans and postretirement benefit plans.

(in thousands)	Actual Cash Contributions for Three Months Ended March 31, 2013		Expected Remaining Cash Contributions for Year Ending December 31, 2013
Domestic plans
Pension benefits	$	5,635	$	16,915
Postretirement benefits	409		1,228
Foreign plans
Pension benefits	1,938		4,930
Postretirement benefits	49		147

Domestic [Member]

Defined Benefit Plan Disclosure [Line Items]

Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans

The tables below present information on net periodic benefit cost for our pension and postretirement benefit plans.

	Domestic
	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,
(in thousands)	2013			2012			2013			2012
Service cost	$	2,663		$	2,157		$	499		$	522
Interest cost	2,384			2,359			682			787
Expected return on plan assets	(3,617		)	(3,301		)	(364		)	(373		)
Amortization of prior service cost	4			53			2			2
Amortization of actuarial net loss	1,801			1,292			0			0
Net periodic benefit cost	$	3,235		$	2,560		$	819		$	938

Foreign [Member]

Defined Benefit Plan Disclosure [Line Items]

Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans

	Foreign
	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,
(in thousands)	2013			2012			2013		2012
Service cost	$	1,354		$	1,167		$	8	$	7
Interest cost	1,357			1,333			27		27
Expected return on plan assets	(1,729		)	(1,506		)	0		0
Amortization of prior service credit	(2		)	(38		)	0		0
Amortization of transition obligation	0			0			13		13
Amortization of actuarial net loss	354			276			10		8
Net periodic benefit cost	$	1,334		$	1,232		$	58	$	55

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Segment Information (Consolidated Revenue By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Information [Line Items]
Consolidated revenue	$ 562,608	$ 562,679
Petroleum Additives [Member]
Segment Information [Line Items]
Consolidated revenue	558,400	557,692
Real Estate Development [Member]
Segment Information [Line Items]
Consolidated revenue	2,858	2,858
All Other [Member]
Segment Information [Line Items]
Consolidated revenue	1,350	2,129
Lubricant Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Consolidated revenue	452,672	444,545
Fuel Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Consolidated revenue	$ 105,728	$ 113,147

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Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The following table provides information on assets and liabilities measured at fair value on a recurring basis. No events occurred during the three months ended March 31, 2013 requiring adjustment to the recognized balances of assets or liabilities which are recorded at fair value on a nonrecurring basis.

	Carrying Amount in Consolidated Balance Sheets				Fair Value Measurements Using
			Fair Value		Level 1		Level 2		Level 3
(in thousands)	March 31, 2013
Cash and cash equivalents	$	64,013	$	64,013	$	64,013	$	0	$	0
Cash deposit for collateralized interest rate swap	33,827		33,827		33,827		0		0
Interest rate swap liability	29,548		29,548		0		29,548		0
	December 31, 2012
Cash and cash equivalents	$	89,129	$	89,129	$	89,129	$	0	$	0
Cash deposit for collateralized interest rate swap	37,694		37,694		37,694		0		0
Interest rate swap liability	32,761		32,761		0		32,761		0

We determine the fair value of the derivative instruments shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. The analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs.

The fair value of the interest rate swap is determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates derived from observable market interest rate curves. In determining the fair value measurements, we incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk and the counterparties’ nonperformance risk.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivatives utilizes Level 3 inputs. These Level 3 inputs include estimates of current credit spreads to evaluate the likelihood of default by both us and the counterparties to the derivatives. As of March 31, 2013 and December 31, 2012, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivatives and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivatives. Accordingly, we have determined that our derivative valuations should be classified in Level 2 of the fair value hierarchy.

We have made an accounting policy election to measure credit risk of any derivative financial instruments subject to master netting agreements on a net basis by counterparty portfolio.

Long-term debt – We record the value of our long-term debt at historical cost. 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 is determined by the market standard practice of modeling the contractual cash flows required under the debt instrument and discounting the cash flows back to present value at the appropriate credit-risk adjusted market interest rates. For floating rate debt obligations, we use forward rates, derived from observable market yield curves, to project the expected cash flows we will be required to make under the debt instrument. We then discount those cash flows back to present value at the appropriate credit-risk adjusted market interest rates. The fair value is categorized as Level 2.

	March 31, 2013				December 31, 2012
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current maturities	$	430,615	$	442,150	$	428,789	$	436,777