Document_And_Entity_Informatio
| Document And Entity Information | 6 Months Ended |
| Jun. 30, 2014 | |
| Document And Entity Information [Abstract] | ' |
| Document Type | '10-Q |
| Amendment Flag | 'false |
| Document Period End Date | 30-Jun-14 |
| Document Fiscal Year Focus | '2014 |
| Document Fiscal Period Focus | 'Q2 |
| 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 | 12,644,790 |
Consolidated_Statements_Of_Inc
| Consolidated Statements Of Income (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, except Per Share data, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Income Statement [Abstract] | ' | ' | ' | ' |
| Net sales | $620,438 | $583,779 | $1,196,860 | $1,143,529 |
| Cost of goods sold | 439,692 | 414,351 | 854,184 | 805,694 |
| Gross profit | 180,746 | 169,428 | 342,676 | 337,835 |
| Selling, general, and administrative expenses | 40,913 | 39,921 | 80,461 | 80,862 |
| Research, development, and testing expenses | 35,367 | 36,429 | 67,574 | 67,450 |
| Operating (loss) profit | 104,466 | 93,078 | 194,641 | 189,523 |
| Interest and financing expenses, net | 4,346 | 4,573 | 8,510 | 9,355 |
| Other (expense) income, net | -2,203 | 5,374 | -4,419 | 6,121 |
| Income from continuing operations before income tax expense | 97,917 | 93,879 | 181,712 | 186,289 |
| Income tax expense | 31,153 | 29,495 | 57,425 | 54,964 |
| Income from continuing operations | 66,764 | 64,384 | 124,287 | 131,325 |
| (Loss) income from operations of discontinued business, net of tax | 0 | -374 | 0 | 520 |
| Net income | $66,764 | $64,010 | $124,287 | $131,845 |
| Earnings per share - basic and diluted: | ' | ' | ' | ' |
| Income from continuing operations (in dollars per share) | $5.24 | $4.84 | $9.66 | $9.84 |
| Income from discontinued operations (in dollars per share) | $0 | ($0.03) | $0 | $0.04 |
| Net income (in dollars per share) | $5.24 | $4.81 | $9.66 | $9.88 |
| Cash dividends declared per common share (in dollars per share) | $1.10 | $0.90 | $2.20 | $1.80 |
Consolidated_Statements_Of_Com
| Consolidated Statements Of Comprehensive Income (USD $) | 3 Months Ended | 6 Months Ended | ||||||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | ||||
| Statement of Comprehensive Income [Abstract] | ' | ' | ' | ' | ||||
| Net income | $66,764 | $64,010 | $124,287 | $131,845 | ||||
| Pension plans and other postretirement benefits: | ' | ' | ' | ' | ||||
| Amortization of prior service cost (credit) included in net periodic benefit cost, net of income tax expense (benefit) of $4 in second quarter 2014, $1 in second quarter 2013, $8 in six months 2014 and $3 in six months 2013 | -3 | [1] | 3 | [1] | -6 | [1] | 5 | [1] |
| Actuarial net gain (loss) arising during the period, net of income tax expense (benefit) of $33 in second quarter and six months 2014 and $95 in second quarter and six months 2013 | -90 | 285 | -90 | 285 | ||||
| Amortization of actuarial net loss (gain) included in net periodic benefit cost, net of income tax expense (benefit) of $383 in second quarter 2014, $794 in second quarter 2013, $767 in six months 2014 and $1,588 in six months 2013 | 705 | [1] | 1,362 | [1] | 1,412 | [1] | 2,725 | [1] |
| Settlements and curtailments, net of income tax expense (benefit) of $262 in second quarter and six months 2014 and $126 in second quarter and six months 2013 | 399 | [1] | 378 | [1] | 399 | [1] | 378 | [1] |
| Amortization of transition obligation (asset) included in net periodic benefit cost, net of income tax expense (benefit) of $0 in second quarter 2014, $3 in second quarter 2013, $1 in six months 2014 and $6 in six months 2013 | 2 | [1] | 9 | [1] | 4 | [1] | 19 | [1] |
| Total pension plans and other postretirement benefits | 1,013 | 2,037 | 1,719 | 3,412 | ||||
| Reclassification adjustments for losses (gains) on derivative instruments included in net income, net of income tax expense (benefit) of $942 in second quarter 2013 and $1,077 in six months 2013 | 0 | 1,479 | 0 | 1,692 | ||||
| Foreign currency translation adjustments, net of income tax expense (benefit) of ($679) in second quarter 2014, ($1,084) in second quarter 2013, $306 in six months 2014 and ($1,758) in six months 2013 | 8,535 | -4,130 | 9,560 | -22,410 | ||||
| Other comprehensive income (loss) | 9,548 | -614 | 11,279 | -17,306 | ||||
| Comprehensive income | $76,312 | $63,396 | $135,566 | $114,539 | ||||
| [1] | (a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 4 in this Form 10-Q and Note 18 in our 2013 Annual Report for further information. | |||||||
Consolidated_Statements_Of_Com1
| Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Statement of Comprehensive Income [Abstract] | ' | ' | ' | ' |
| Amortization of prior service cost (credit) included in net periodic benefit cost, income tax expense (benefit) | $4 | $1 | $8 | $3 |
| Actuarial net gain (loss) arising during the period, income tax expense (benefit) | 33 | 95 | 33 | 95 |
| Amortization of actuarial net loss (gain) included in net periodic benefit cost, income tax expense (benefit) | 383 | 794 | 767 | 1,588 |
| Settlements and curtailments, income tax expense (benefit) | 262 | 126 | 262 | 126 |
| Amortization of transition obligation (asset) included in net periodic benefit cost, income tax expense (benefit) | 0 | 3 | 1 | 6 |
| Reclassification adjustments for losses (gains) on derivative instruments included in net income, income tax expense (benefit) | ' | 942 | ' | 1,077 |
| Foreign currency translation adjustments, income tax expense (benefit) | ($679) | ($1,084) | $306 | ($1,758) |
Consolidated_Balance_Sheets
| Consolidated Balance Sheets (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| In Thousands, unless otherwise specified | ||
| Current assets: | ' | ' |
| Cash and cash equivalents | $113,644 | $238,703 |
| Trade and other accounts receivable, less allowance for doubtful accounts | 347,630 | 309,847 |
| Inventories: | ' | ' |
| Finished goods and work-in-process | 273,464 | 257,446 |
| Raw materials | 47,346 | 41,799 |
| Stores, supplies, and other | 8,573 | 8,273 |
| Inventories, total | 329,383 | 307,518 |
| Deferred income taxes | 6,346 | 8,267 |
| Prepaid expenses and other current assets | 36,029 | 32,984 |
| Total current assets | 833,032 | 897,319 |
| Property, plant, and equipment, at cost | 1,003,519 | 985,196 |
| Less accumulated depreciation and amortization | 713,072 | 700,160 |
| Net property, plant, and equipment | 290,447 | 285,036 |
| Prepaid pension cost | 61,882 | 55,087 |
| Deferred income taxes | 21,730 | 22,961 |
| Intangibles (net of amortization) and goodwill | 20,338 | 23,319 |
| Deferred charges and other assets | 44,921 | 43,552 |
| Total assets | 1,272,350 | 1,327,274 |
| Current liabilities: | ' | ' |
| Accounts payable | 137,479 | 134,132 |
| Accrued expenses | 73,006 | 77,992 |
| Dividends payable | 12,578 | 12,996 |
| Income taxes payable | 11,972 | 11,419 |
| Other current liabilities | 11,023 | 11,075 |
| Total current liabilities | 246,058 | 247,614 |
| Long-term debt | 353,497 | 349,467 |
| Other noncurrent liabilities | 159,298 | 157,745 |
| Total liabilities | 758,853 | 754,826 |
| Commitments and contingencies | ' | ' |
| Shareholders’ equity: | ' | ' |
| Common stock and paid-in capital (without par value; authorized shares - 80,000,000; issued and outstanding shares - 12,644,790 at June 30, 2014 and 13,099,356 at December 31, 2013) | 0 | 0 |
| Accumulated other comprehensive loss | -48,807 | -60,086 |
| Retained earnings | 562,304 | 632,534 |
| Total shareholders' equity | 513,497 | 572,448 |
| Total liabilities and shareholders’ equity | $1,272,350 | $1,327,274 |
Consolidated_Balance_Sheets_Pa
| Consolidated Balance Sheets (Parenthetical) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| Statement of Financial Position [Abstract] | ' | ' |
| Common stock, no par value | ' | ' |
| Common stock, authorized shares | 80,000,000 | 80,000,000 |
| Common stock, issued shares | 12,644,790 | 13,099,356 |
| Common stock, outstanding shares | 12,644,790 | 13,099,356 |
Consolidated_Statements_Of_Sha
| Consolidated Statements Of Shareholders' Equity (USD $) | Total | Common Stock and Paid-in Capital [Member] | Accumulated Other Comprehensive Loss [Member] | Retained Earnings [Member] |
| In Thousands, except Share data, unless otherwise specified | ||||
| Balance at Dec. 31, 2012 | $402,205 | $721 | ($110,689) | $512,173 |
| Balance (in shares) at Dec. 31, 2012 | ' | 13,417,877 | ' | ' |
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ' | ' | ' | ' |
| Net income | 131,845 | ' | ' | 131,845 |
| Other comprehensive income (loss) | -17,306 | ' | -17,306 | ' |
| Cash dividends | -23,980 | ' | ' | -23,980 |
| Repurchases of common stock (in shares) | ' | -105,400 | ' | ' |
| Repurchases of common stock | -26,798 | -1,051 | ' | -25,747 |
| Stock-based compensation (in shares) | ' | -355 | ' | ' |
| Stock-based compensation | 479 | 469 | ' | 10 |
| Balance at Jun. 30, 2013 | 466,445 | 139 | -127,995 | 594,301 |
| Balance (in shares) at Jun. 30, 2013 | ' | 13,312,122 | ' | ' |
| Balance at Dec. 31, 2013 | 572,448 | 0 | -60,086 | 632,534 |
| Balance (in shares) at Dec. 31, 2013 | 13,099,356 | 13,099,356 | ' | ' |
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ' | ' | ' | ' |
| Net income | 124,287 | ' | ' | 124,287 |
| Other comprehensive income (loss) | 11,279 | ' | 11,279 | ' |
| Cash dividends | -28,155 | ' | ' | -28,155 |
| Repurchases of common stock (in shares) | ' | -454,400 | ' | ' |
| Repurchases of common stock | -167,329 | -964 | ' | -166,365 |
| Stock-based compensation (in shares) | ' | -166 | ' | ' |
| Stock-based compensation | 967 | 964 | ' | 3 |
| Balance at Jun. 30, 2014 | $513,497 | $0 | ($48,807) | $562,304 |
| Balance (in shares) at Jun. 30, 2014 | 12,644,790 | 12,644,790 | ' | ' |
Consolidated_Statements_Of_Sha1
| Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $) | 3 Months Ended | 6 Months Ended | ||
| Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | |
| Statement of Stockholders' Equity [Abstract] | ' | ' | ' | ' |
| Cash dividends (in dollars per share) | $1.10 | $0.90 | $2.20 | $1.80 |
Consolidated_Statements_Of_Cas
| Consolidated Statements Of Cash Flows (USD $) | 6 Months Ended | |
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 |
| Statement of Cash Flows [Abstract] | ' | ' |
| Cash and cash equivalents at beginning of year | $238,703 | $89,129 |
| Cash flows from operating activities: | ' | ' |
| Net income | 124,287 | 131,845 |
| Adjustments to reconcile net income to cash flows from operating activities: | ' | ' |
| Depreciation and amortization | 20,719 | 25,884 |
| Noncash pension benefits expense | 6,060 | 9,240 |
| Noncash postretirement benefits expense | 1,123 | 1,824 |
| Deferred income tax expense | 411 | 2,413 |
| Unrealized loss (gain) on derivative instruments, net | 2,018 | -8,239 |
| Working capital changes | -65,654 | -35,496 |
| Cash pension benefits contributions | -9,708 | -15,685 |
| Cash postretirement benefits contributions | -699 | -872 |
| Other, net | 5,959 | 11,992 |
| Cash provided from (used in) operating activities | 84,516 | 122,906 |
| Cash flows from investing activities: | ' | ' |
| Capital expenditures | -20,654 | -31,849 |
| Deposits for interest rate swap | -4,861 | -7,762 |
| Return of deposits for interest rate swap | 2,930 | 17,110 |
| Other, net | -2,485 | -2,464 |
| Cash provided from (used in) investing activities | -25,070 | -24,965 |
| Cash flows from financing activities: | ' | ' |
| Net borrowings (repayments) under revolving credit facility | 4,000 | -60,000 |
| Net (repayments) borrowings under lines of credit | -151 | 3,404 |
| Dividends paid | -28,155 | -23,980 |
| Debt issuance costs | 0 | -1,145 |
| Repurchases of common stock | -162,867 | -26,798 |
| Cash provided from (used in) financing activities | -187,173 | -108,519 |
| Effect of foreign exchange on cash and cash equivalents | 2,668 | -5,006 |
| (Decrease) increase in cash and cash equivalents | -125,059 | -15,584 |
| Cash and cash equivalents at end of period | $113,644 | $73,545 |
Financial_Statement_Presentati
| Financial Statement Presentation | 6 Months Ended |
| Jun. 30, 2014 | |
| 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 June 30, 2014 and December 31, 2013, our consolidated results of operations and comprehensive income for the second quarter and six months ended June 30, 2014 and June 30, 2013, and our changes in shareholders' equity and cash flows for the six months ended June 30, 2014 and June 30, 2013. 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, 2013 (2013 Annual Report), as filed with the Securities and Exchange Commission (SEC). The results of operations for the six month period ended June 30, 2014 are not necessarily indicative of the results to be expected for the full year ending December 31, 2014. The December 31, 2013 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. | |
| Certain reclassifications have been made to the accompanying consolidated financial statements to conform to the current presentation. |
Discontinued_Operations
| Discontinued Operations | 6 Months Ended | ||||||||
| Jun. 30, 2014 | |||||||||
| Discontinued Operations and Disposal Groups [Abstract] | ' | ||||||||
| Discontinued Operations | ' | ||||||||
| Discontinued Operations | |||||||||
| On July 2, 2013, Foundry Park I completed the sale of its real estate assets for $144 million in cash, which comprised our entire real estate development segment. The operations of the real estate development segment for all periods presented are reported in (loss) income from operations of discontinued business, net of tax, in the Consolidated Statements of Income. We recognized a gain of $36 million ($22 million after tax) in 2013 related to this transaction. | |||||||||
| The components of (loss) income from operations of discontinued business, net of tax, were as follows: | |||||||||
| (in thousands) | Second Quarter Ended June 30, 2013 | Six Months Ended June 30, 2013 | |||||||
| Rental revenue | $ | 2,858 | $ | 5,716 | |||||
| Cost of rental | 1,068 | 2,136 | |||||||
| Interest, financing, and other expenses, net | 2,401 | 2,728 | |||||||
| (Loss) income before income tax expense | (611 | ) | 852 | ||||||
| Income tax (benefit) expense | (237 | ) | 332 | ||||||
| (Loss) income from operations of discontinued business, net of tax | $ | (374 | ) | $ | 520 | ||||
| Interest and financing expenses, net include only amounts directly related to the Foundry Park I mortgage loan agreement (mortgage loan) and related interest rate swap. Other interest and financing expenses have not been allocated to discontinued operations. The Consolidated Statements of Cash Flows summarize the activity of discontinued operations and continuing operations together. | |||||||||
Segment_Information
| Segment Information | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| Segment Reporting [Abstract] | ' | ||||||||||||||||
| Segment Information | ' | ||||||||||||||||
| Segment Information | |||||||||||||||||
| The tables below show our consolidated segment results. The “All other” category includes the operations of the tetraethyl lead (TEL) business, as well as certain contract manufacturing performed by Ethyl Corporation (Ethyl). | |||||||||||||||||
| Consolidated Revenue by Segment | |||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Petroleum additives | |||||||||||||||||
| Lubricant additives | $ | 513,421 | $ | 475,112 | $ | 986,770 | $ | 927,784 | |||||||||
| Fuel additives | 104,084 | 106,227 | 204,780 | 211,955 | |||||||||||||
| Total | 617,505 | 581,339 | 1,191,550 | 1,139,739 | |||||||||||||
| All other | 2,933 | 2,440 | 5,310 | 3,790 | |||||||||||||
| Consolidated revenue | $ | 620,438 | $ | 583,779 | $ | 1,196,860 | $ | 1,143,529 | |||||||||
| Segment Operating Profit | |||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Petroleum additives | $ | 109,089 | $ | 97,790 | $ | 205,268 | $ | 199,818 | |||||||||
| All other | 858 | 183 | 1,393 | (218 | ) | ||||||||||||
| Segment operating profit | 109,947 | 97,973 | 206,661 | 199,600 | |||||||||||||
| Corporate, general, and administrative expenses | (5,575 | ) | (5,189 | ) | (12,128 | ) | (10,405 | ) | |||||||||
| Interest and financing expenses, net | (4,346 | ) | (4,573 | ) | (8,510 | ) | (9,355 | ) | |||||||||
| Gain (loss) on interest rate swap agreement (a) | (2,270 | ) | 5,098 | (4,503 | ) | 5,775 | |||||||||||
| Other income, net | 161 | 570 | 192 | 674 | |||||||||||||
| Income from continuing operations before income tax expense | $ | 97,917 | $ | 93,879 | $ | 181,712 | $ | 186,289 | |||||||||
| (a) | The gain (loss) 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. | ||||||||||||||||
Pension_Plans_and_Other_Postre
| Pension Plans and Other Postretirement Benefits | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| 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 six months ended June 30, 2014, as well as the remaining cash contributions we expect to make during the year ending December 31, 2014 for both our domestic and foreign pension plans and postretirement benefit plans. | |||||||||||||||||
| (in thousands) | Actual Cash Contributions for Six Months Ended June 30, 2014 | Expected Remaining Cash Contributions for Year Ending December 31, 2014 | |||||||||||||||
| Domestic plans | |||||||||||||||||
| Pension benefits | $ | 6,325 | $ | 8,750 | |||||||||||||
| Postretirement benefits | 645 | 645 | |||||||||||||||
| Foreign plans | |||||||||||||||||
| Pension benefits | 3,383 | 3,471 | |||||||||||||||
| Postretirement benefits | 54 | 0 | |||||||||||||||
| The tables below present information on net periodic benefit cost for our pension and postretirement benefit plans. | |||||||||||||||||
| Domestic | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Second Quarter Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 2,388 | $ | 2,664 | $ | 405 | $ | 499 | |||||||||
| Interest cost | 2,737 | 2,383 | 690 | 681 | |||||||||||||
| Expected return on plan assets | (4,331 | ) | (3,617 | ) | (328 | ) | (364 | ) | |||||||||
| Amortization of prior service cost | 25 | 4 | 3 | 3 | |||||||||||||
| Amortization of actuarial net loss (gain) | 978 | 1,801 | (176 | ) | 0 | ||||||||||||
| Net periodic benefit cost (income) | $ | 1,797 | $ | 3,235 | $ | 594 | $ | 819 | |||||||||
| Domestic | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Six Months Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 4,775 | $ | 5,327 | $ | 810 | $ | 998 | |||||||||
| Interest cost | 5,475 | 4,767 | 1,382 | 1,363 | |||||||||||||
| Expected return on plan assets | (8,661 | ) | (7,234 | ) | (656 | ) | (728 | ) | |||||||||
| Amortization of prior service cost | 50 | 8 | 5 | 5 | |||||||||||||
| Amortization of actuarial net loss (gain) | 1,955 | 3,602 | (353 | ) | 0 | ||||||||||||
| Net periodic benefit cost (income) | $ | 3,594 | $ | 6,470 | $ | 1,188 | $ | 1,638 | |||||||||
| Foreign | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Second Quarter Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 1,506 | $ | 1,321 | $ | 1 | $ | 8 | |||||||||
| Interest cost | 1,569 | 1,324 | 17 | 26 | |||||||||||||
| Expected return on plan assets | (2,098 | ) | (1,686 | ) | 0 | 0 | |||||||||||
| Amortization of prior service credit | (26 | ) | (2 | ) | 0 | 0 | |||||||||||
| Amortization of transition obligation | 0 | 0 | 2 | 13 | |||||||||||||
| Amortization of actuarial net loss | 286 | 346 | 3 | 10 | |||||||||||||
| Settlements and curtailments | 0 | 133 | (122 | ) | 71 | ||||||||||||
| Net periodic benefit cost (income) | $ | 1,237 | $ | 1,436 | $ | (99 | ) | $ | 128 | ||||||||
| Foreign | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Six Months Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 3,001 | $ | 2,675 | $ | 3 | $ | 16 | |||||||||
| Interest cost | 3,124 | 2,681 | 41 | 53 | |||||||||||||
| Expected return on plan assets | (4,177 | ) | (3,415 | ) | 0 | 0 | |||||||||||
| Amortization of prior service credit | (52 | ) | (4 | ) | 0 | 0 | |||||||||||
| Amortization of transition obligation | 0 | 0 | 5 | 26 | |||||||||||||
| Amortization of actuarial net loss | 570 | 700 | 8 | 20 | |||||||||||||
| Settlements and curtailments | 0 | 133 | (122 | ) | 71 | ||||||||||||
| Net periodic benefit cost (income) | $ | 2,466 | $ | 2,770 | $ | (65 | ) | $ | 186 | ||||||||
| The 2013 settlements and curtailments amounts in the tables above reflect the workforce reduction at our Ethyl Canada facility as a result of the decision to discontinue the production of a fuel additive at this facility. The 2014 amounts reflect the termination of the Ethyl Canada postretirement plan. | |||||||||||||||||
Earnings_Per_Share
| Earnings Per Share | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| Earnings Per Share [Abstract] | ' | ||||||||||||||||
| Earnings Per Share | ' | ||||||||||||||||
| Earnings Per Share | |||||||||||||||||
| We had 19,865 shares of nonvested restricted stock at June 30, 2014 and 11,585 shares of nonvested restricted stock at June 30, 2013. 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 from continuing operations. | |||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||
| (in thousands, except per-share amounts) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Earnings per share from continuing operations numerator: | |||||||||||||||||
| Income from continuing operations attributable to common shareholders before allocation of earnings to participating securities | $ | 66,764 | $ | 64,384 | $ | 124,287 | $ | 131,325 | |||||||||
| Income from continuing operations allocated to participating securities | 102 | 44 | 192 | 105 | |||||||||||||
| Income from continuing operations attributable to common shareholders after allocation of earnings to participating securities | $ | 66,662 | $ | 64,340 | $ | 124,095 | $ | 131,220 | |||||||||
| Earnings per share from continuing operations denominator: | |||||||||||||||||
| Weighted-average number of shares of common stock outstanding - basic and diluted | 12,732 | 13,303 | 12,842 | 13,340 | |||||||||||||
| Earnings per share from continuing operations - basic and diluted | $ | 5.24 | $ | 4.84 | $ | 9.66 | $ | 9.84 | |||||||||
Intangibles_Net_of_Amortizatio
| Intangibles (Net of Amortization) and Goodwill | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | ' | ||||||||||||||||
| Intangibles (Net of Amortization) and Goodwill | ' | ||||||||||||||||
| Intangibles (Net of Amortization) and Goodwill | |||||||||||||||||
| Identifiable Intangibles | |||||||||||||||||
| June 30, 2014 | December 31, 2013 | ||||||||||||||||
| (in thousands) | Gross | Accumulated | Gross | Accumulated | |||||||||||||
| Carrying | Amortization | Carrying | Amortization | ||||||||||||||
| Amount | Amount | ||||||||||||||||
| Amortizing intangible assets | |||||||||||||||||
| Formulas and technology | $ | 88,970 | $ | 79,635 | $ | 88,917 | $ | 77,217 | |||||||||
| Contracts | 7,127 | 5,973 | 7,127 | 5,528 | |||||||||||||
| Customer bases | 7,026 | 3,126 | 7,012 | 2,918 | |||||||||||||
| Trademarks and trade names | 1,600 | 690 | 1,591 | 610 | |||||||||||||
| Goodwill | 5,039 | 4,945 | |||||||||||||||
| $ | 109,762 | $ | 89,424 | $ | 109,592 | $ | 86,273 | ||||||||||
| All of the intangibles relate to the petroleum additives segment. The change in the gross carrying amount between 2013 and 2014 is due to foreign currency fluctuations. There is no accumulated goodwill impairment. | |||||||||||||||||
| Amortization expense was (in thousands): | |||||||||||||||||
| Second quarter ended June 30, 2014 | $ | 1,576 | |||||||||||||||
| Six months ended June 30, 2014 | 3,151 | ||||||||||||||||
| Second quarter ended June 30, 2013 | 1,864 | ||||||||||||||||
| Six months ended June 30, 2013 | 3,728 | ||||||||||||||||
| Estimated amortization expense for the remainder of 2014, as well as annual amortization expense related to our intangible assets for the next five years is expected to be (in thousands): | |||||||||||||||||
| 2014 | $ | 3,012 | |||||||||||||||
| 2015 | 5,790 | ||||||||||||||||
| 2016 | 1,910 | ||||||||||||||||
| 2017 | 746 | ||||||||||||||||
| 2018 | 715 | ||||||||||||||||
| 2019 | 688 | ||||||||||||||||
| We 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. | |||||||||||||||||
Longterm_Debt
| Long-term Debt | 6 Months Ended | ||||||||
| Jun. 30, 2014 | |||||||||
| Long-term Debt and Capital Lease Obligations [Abstract] | ' | ||||||||
| Long-term Debt | ' | ||||||||
| Long-term Debt | |||||||||
| (in thousands) | June 30, | December 31, | |||||||
| 2014 | 2013 | ||||||||
| Senior notes - 4.10% due 2022 | $ | 349,497 | $ | 349,467 | |||||
| Revolving credit facility | 4,000 | 0 | |||||||
| $ | 353,497 | $ | 349,467 | ||||||
| The outstanding senior notes have an aggregate principal amount of $350 million and are registered under the Securities Act of 1933. | |||||||||
| The following table provides information related to the unused portion of our revolving credit facility: | |||||||||
| (in thousands) | June 30, | December 31, | |||||||
| 2014 | 2013 | ||||||||
| Maximum borrowing capacity under the revolving credit facility | $ | 650,000 | $ | 650,000 | |||||
| Outstanding borrowings under the revolving credit facility | 4,000 | 0 | |||||||
| Outstanding letters of credit | 3,100 | 3,100 | |||||||
| Unused portion of revolving credit facility | $ | 642,900 | $ | 646,900 | |||||
| The average interest rate for borrowings under our revolving credit facility was 3.8% during the first six months of 2014 and 2.2% during 2013. | |||||||||
| We were in compliance with all covenants under our debt agreements at June 30, 2014 and at December 31, 2013. | |||||||||
Contractual_Commitments_and_Co
| Contractual Commitments and Contingencies | 6 Months Ended |
| Jun. 30, 2014 | |
| 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 operations, 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 | |
| We are involved in environmental proceedings and potential proceedings relating to soil and groundwater contamination, disposal of hazardous waste, and other environmental matters at several of our current or former facilities, or at third-party sites where we have been designated as a potentially responsible party (PRP). 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. Recorded liabilities are discounted to present value (including an inflation factor in the estimate) only if we can reliably determine the amount and timing of future cash payments. While we believe we are currently adequately accrued for known environmental issues, it is possible that unexpected future costs could have a significant impact on our financial position, results of operations, and cash flows. Our total accruals for environmental remediation, dismantling, and decontamination were approximately $17 million at June 30, 2014 and $18 million at December 31, 2013. | |
| Our more significant environmental sites include a former TEL plant site in Louisiana (the Louisiana site) and a former Houston, Texas plant site (the Texas site). Together, the amounts accrued on a discounted basis related to these sites represent approximately $11 million at both June 30, 2014 and December 31, 2013 of the total accrual above, using discount rates ranging from 3% to 9%. Of the total accrued for these two sites, the amount related to remediation of groundwater and soil at both June 30, 2014 and December 31, 2013 was $5 million for the Louisiana site and $6 million for the Texas site. The aggregate undiscounted amount for these sites was $15 million at June 30, 2014 and $16 million at December 31, 2013. | |
| In 2000, the EPA named us as a PRP under Superfund law for the clean-up of soil and groundwater contamination at the five grouped disposal sites known as "Sauget Area 2 Sites" in Sauget, Illinois. Without admitting any fact, responsibility, fault, or liability in connection with this site, we are participating with other PRPs in site investigations and feasibility studies. In December 2013, the EPA issued its Record of Decision confirming its remedies for the selected Sauget Area 2 sites. We have accrued our estimated proportional share of the remedial costs and expenses addressed in the Record of Decision. We do not believe there is any additional information available as a basis for revision of the liability that we have established at June 30, 2014. The amount accrued for this site is not material. | |
| Guarantees | |
| We have agreements with several financial institutions that provide guarantees for certain business activities of our subsidiaries, including performance, insurance, credit, and lease guarantees. The parent company provides guarantees of the subsidiaries' performance under these agreements and also provides a guarantee for repayment of a line of credit for a subsidiary in China. Guarantees outstanding under all of these agreements at June 30, 2014 are $6 million. Certain 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. The maximum potential amount of future payments under all other guarantees not secured by letters of credit at June 30, 2014 is $17 million. Expiration dates of the letters of credit and certain guarantees range from 2014 to 2015. Some of the guarantees have no expiration date. We renew letters of credit as necessary. |
Derivatives_and_Hedging_Activi
| Derivatives and Hedging Activities | 6 Months Ended | ||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||
| 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 risks, 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, and may enter in the future, 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. There were no such contracts outstanding at June 30, 2014 or December 31, 2013. | |||||||||||||||||||
| 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 $28 million at June 30, 2014 and $26 million at December 31, 2013. | |||||||||||||||||||
| 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 do not 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. | |||||||||||||||||||
| Liability Derivatives | |||||||||||||||||||
| June 30, 2014 | December 31, 2013 | ||||||||||||||||||
| (in thousands) | Balance | Fair Value | Balance | Fair Value | |||||||||||||||
| Sheet | Sheet | ||||||||||||||||||
| Location | Location | ||||||||||||||||||
| Derivatives Not Designated as Hedging Instruments | |||||||||||||||||||
| Goldman Sachs interest rate swap | Accrued expenses and Other noncurrent liabilities | $ | 23,229 | Accrued expenses and Other noncurrent liabilities | $ | 21,211 | |||||||||||||
| The following table presents the effect of our derivative financial instruments on the Consolidated Statements of Income. | |||||||||||||||||||
| 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 | Amount of Gain (Loss) Recognized in | |||||||||||||||||
| Income on Derivatives | Income on Derivatives | ||||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||||
| June 30, | June 30, | ||||||||||||||||||
| 2014 | 2013 | 2014 | 2013 | ||||||||||||||||
| Goldman Sachs interest rate swap | Other (expense) income, net | $ | (2,270 | ) | $ | 5,097 | $ | (4,503 | ) | $ | 5,775 | ||||||||
| 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 June 30, 2014, 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 $23 million. We have minimum collateral posting thresholds with the counterparty and have posted cash collateral of $28 million as of June 30, 2014. If required, we could have settled our obligations under the agreement at the termination value of $23 million at June 30, 2014. | |||||||||||||||||||
Other_Comprehensive_Income_Los
| Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss | 6 Months Ended | ||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||
| 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 | Derivative Instruments | Foreign Currency Translation Adjustments | Accumulated Other | |||||||||||||||
| and Other Postretirement Benefits | Comprehensive (Loss) Income | ||||||||||||||||||
| Balance at December 31, 2012 | $ | (96,139 | ) | $ | (4,173 | ) | $ | (10,377 | ) | $ | (110,689 | ) | |||||||
| Other comprehensive income (loss) before reclassifications | 285 | 0 | (22,410 | ) | (22,125 | ) | |||||||||||||
| Amounts reclassified from accumulated other comprehensive loss | 3,127 | 1,692 | 0 | 4,819 | |||||||||||||||
| Other comprehensive income (loss) | 3,412 | 1,692 | (22,410 | ) | (17,306 | ) | |||||||||||||
| Balance at June 30, 2013 | $ | (92,727 | ) | $ | (2,481 | ) | $ | (32,787 | ) | $ | (127,995 | ) | |||||||
| Balance at December 31, 2013 | $ | (44,493 | ) | $ | 0 | $ | (15,593 | ) | $ | (60,086 | ) | ||||||||
| Other comprehensive income (loss) before reclassifications | (90 | ) | 0 | 9,560 | 9,470 | ||||||||||||||
| Amounts reclassified from accumulated other comprehensive loss | 1,809 | 0 | 0 | 1,809 | |||||||||||||||
| Other comprehensive income (loss) | 1,719 | 0 | 9,560 | 11,279 | |||||||||||||||
| Balance at June 30, 2014 | $ | (42,774 | ) | $ | 0 | $ | (6,033 | ) | $ | (48,807 | ) | ||||||||
| 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 | Second Quarter Ended | Six Months Ended | Affected Line Item on the Consolidated Statements of Income | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||||
| 2014 | 2013 | 2014 | 2013 | ||||||||||||||||
| Pension plans and other postretirement benefits: | |||||||||||||||||||
| Amortization of prior service (credit) cost | $ | (3 | ) | $ | 3 | $ | (6 | ) | $ | 5 | (a) | ||||||||
| Amortization of actuarial net loss | 705 | 1,362 | 1,412 | 2,725 | (a) | ||||||||||||||
| Settlements and curtailments | 399 | 378 | 399 | 378 | (a) | ||||||||||||||
| Amortization of transition obligation | 2 | 9 | 4 | 19 | (a) | ||||||||||||||
| Total pension plans and other postretirement benefits | 1,103 | 1,752 | 1,809 | 3,127 | |||||||||||||||
| Derivative instruments: | |||||||||||||||||||
| Amortization of mortgage loan interest rate swap | 0 | 1,466 | 0 | 1,666 | (Loss) income from operations of discontinued business, net of tax (b) | ||||||||||||||
| Amortization of construction loan interest rate swap | 0 | 13 | 0 | 26 | (Loss) income from operations of discontinued business, net of tax (b) | ||||||||||||||
| Total derivative instruments | 0 | 1,479 | 0 | 1,692 | |||||||||||||||
| Total reclassifications for the period | $ | 1,103 | $ | 3,231 | $ | 1,809 | $ | 4,819 | |||||||||||
| (a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 4 in this Form 10-Q and Note 18 in our 2013 Annual Report for further information. | |||||||||||||||||||
| (b) Amounts relate to the Foundry Park I mortgage loan interest rate swap and the construction loan interest rate swap. Amounts are presented net of income tax expense of $934 thousand for the mortgage loan interest rate swap and $8 thousand for the construction loan interest rate swap for the second quarter ended June 30, 2013 and $1.1 million for the mortgage loan interest rates swap and $16 thousand for the construction loan interest rate swap for the six months ended June 30, 2013. Due to the sale of the real estate assets of Foundry Park I in July 2013, the amounts recorded in accumulated other comprehensive loss for both interest rate swaps were completely recognized in the Consolidated Statements of Income in 2013. | |||||||||||||||||||
Fair_Value_Measurements
| Fair Value Measurements | 6 Months Ended | ||||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||||
| 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 material events occurred during the six months ended June 30, 2014 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) | June 30, 2014 | ||||||||||||||||||||
| Cash and cash equivalents | $ | 113,644 | $ | 113,644 | $ | 113,644 | $ | 0 | $ | 0 | |||||||||||
| Cash deposit for collateralized interest rate swap | 27,770 | 27,770 | 27,770 | 0 | 0 | ||||||||||||||||
| Interest rate swap liability | 23,229 | 23,229 | 0 | 23,229 | 0 | ||||||||||||||||
| December 31, 2013 | |||||||||||||||||||||
| Cash and cash equivalents | $ | 238,703 | $ | 238,703 | $ | 238,703 | $ | 0 | $ | 0 | |||||||||||
| Cash deposit for collateralized interest rate swap | 25,839 | 25,839 | 25,839 | 0 | 0 | ||||||||||||||||
| Interest rate swap liability | 21,211 | 21,211 | 0 | 21,211 | 0 | ||||||||||||||||
| We determine the fair value of derivative instruments shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of the instrument. The analysis reflects the contractual term of the derivative, 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 derivative fall within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivative 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 derivative. As of June 30, 2014 and December 31, 2013, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivative and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivative. Accordingly, we have determined that our derivative valuation 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 following table 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. | |||||||||||||||||||||
| June 30, 2014 | December 31, 2013 | ||||||||||||||||||||
| (in thousands) | Carrying | Fair | Carrying | Fair | |||||||||||||||||
| Amount | Value | Amount | Value | ||||||||||||||||||
| Long-term debt | $ | 353,497 | $ | 375,319 | $ | 349,467 | $ | 345,283 | |||||||||||||
Consolidating_Financial_Inform
| Consolidating Financial Information | 6 Months Ended | ||||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||||
| Consolidating Financial Information [Abstract] | ' | ||||||||||||||||||||
| Consolidating Financial Information | ' | ||||||||||||||||||||
| Consolidating Financial Information | |||||||||||||||||||||
| The 4.10% senior notes are guaranteed on a senior unsecured basis by certain of our domestic subsidiaries that guarantee our obligations under the 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 | ||||||||||||||||||||
| NewMarket Services Corporation | Afton Chemical Additives Corporation | ||||||||||||||||||||
| 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 second quarter and six months ended June 30, 2014 and June 30, 2013; Consolidating Balance Sheets as of June 30, 2014 and December 31, 2013; and Condensed Consolidating Statements of Cash Flows for the six months ended June 30, 2014 and June 30, 2013 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. During 2013, certain subsidiaries that had been Guarantor Subsidiaries were released from their obligations under the revolving credit facility, and therefore were released as a Subsidiary Guarantor under the 4.10% senior notes. Prior periods have been revised to reflect the change in Guarantor Subsidiaries and Non-Guarantor subsidiaries. | |||||||||||||||||||||
| The financial information may not necessarily be indicative of results of operations 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 | |||||||||||||||||||||
| Second Quarter Ended June 30, 2014 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 239,631 | $ | 380,807 | $ | 0 | $ | 620,438 | |||||||||||
| Cost of goods sold | 0 | 117,140 | 322,552 | 0 | 439,692 | ||||||||||||||||
| Gross profit | 0 | 122,491 | 58,255 | 0 | 180,746 | ||||||||||||||||
| Selling, general, and administrative expenses | 1,609 | 22,131 | 17,173 | 0 | 40,913 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 25,604 | 9,763 | 0 | 35,367 | ||||||||||||||||
| Operating (loss) profit | (1,609 | ) | 74,756 | 31,319 | 0 | 104,466 | |||||||||||||||
| Interest and financing expenses, net | 4,535 | (1,028 | ) | 839 | 0 | 4,346 | |||||||||||||||
| Other (expense) income, net | (2,260 | ) | (36 | ) | 93 | 0 | (2,203 | ) | |||||||||||||
| (Loss) income before income taxes and equity income of subsidiaries | (8,404 | ) | 75,748 | 30,573 | 0 | 97,917 | |||||||||||||||
| Income tax (benefit) expense | (3,505 | ) | 27,556 | 7,102 | 0 | 31,153 | |||||||||||||||
| Equity income of subsidiaries | 71,663 | 0 | 0 | (71,663 | ) | 0 | |||||||||||||||
| Net income | 66,764 | 48,192 | 23,471 | (71,663 | ) | 66,764 | |||||||||||||||
| Other comprehensive income (loss) | 9,548 | 1,448 | 7,758 | (9,206 | ) | 9,548 | |||||||||||||||
| Comprehensive income | $ | 76,312 | $ | 49,640 | $ | 31,229 | $ | (80,869 | ) | $ | 76,312 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Second Quarter Ended June 30, 2013 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 233,955 | $ | 349,824 | $ | 0 | $ | 583,779 | |||||||||||
| Cost of goods sold | 0 | 122,851 | 291,500 | 0 | 414,351 | ||||||||||||||||
| Gross profit | 0 | 111,104 | 58,324 | 0 | 169,428 | ||||||||||||||||
| Selling, general, and administrative expenses | 1,779 | 22,059 | 16,083 | 0 | 39,921 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 24,104 | 12,325 | 0 | 36,429 | ||||||||||||||||
| Operating (loss) profit | (1,779 | ) | 64,941 | 29,916 | 0 | 93,078 | |||||||||||||||
| Interest and financing expenses, net | 4,749 | (1,072 | ) | 896 | 0 | 4,573 | |||||||||||||||
| Other (expense) income, net | 5,118 | (1 | ) | 257 | 0 | 5,374 | |||||||||||||||
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | (1,410 | ) | 66,012 | 29,277 | 0 | 93,879 | |||||||||||||||
| Income tax (benefit) expense | (759 | ) | 16,898 | 13,356 | 0 | 29,495 | |||||||||||||||
| Equity income of subsidiaries | 64,661 | 0 | 0 | (64,661 | ) | 0 | |||||||||||||||
| Income from continuing operations | 64,010 | 49,114 | 15,921 | (64,661 | ) | 64,384 | |||||||||||||||
| (Loss) income from operations of discontinued business, net of tax | 0 | 0 | (374 | ) | 0 | (374 | ) | ||||||||||||||
| Net income | 64,010 | 49,114 | 15,547 | (64,661 | ) | 64,010 | |||||||||||||||
| Other comprehensive income (loss) | (614 | ) | 665 | (2,102 | ) | 1,437 | (614 | ) | |||||||||||||
| Comprehensive income | $ | 63,396 | $ | 49,779 | $ | 13,445 | $ | (63,224 | ) | $ | 63,396 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Six Months Ended June 30, 2014 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 447,905 | $ | 748,955 | $ | 0 | $ | 1,196,860 | |||||||||||
| Cost of goods sold | 0 | 218,814 | 635,370 | 0 | 854,184 | ||||||||||||||||
| Gross profit | 0 | 229,091 | 113,585 | 0 | 342,676 | ||||||||||||||||
| Selling, general, and administrative expenses | 3,338 | 43,010 | 34,113 | 0 | 80,461 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 47,634 | 19,940 | 0 | 67,574 | ||||||||||||||||
| Operating (loss) profit | (3,338 | ) | 138,447 | 59,532 | 0 | 194,641 | |||||||||||||||
| Interest and financing expenses, net | 8,883 | (2,010 | ) | 1,637 | 0 | 8,510 | |||||||||||||||
| Other (expense) income, net | (4,492 | ) | (61 | ) | 134 | 0 | (4,419 | ) | |||||||||||||
| (Loss) income before income taxes and equity income of subsidiaries | (16,713 | ) | 140,396 | 58,029 | 0 | 181,712 | |||||||||||||||
| Income tax (benefit) expense | (6,984 | ) | 49,207 | 15,202 | 0 | 57,425 | |||||||||||||||
| Equity income of subsidiaries | 134,016 | 0 | 0 | (134,016 | ) | 0 | |||||||||||||||
| Net income | 124,287 | 91,189 | 42,827 | (134,016 | ) | 124,287 | |||||||||||||||
| Other comprehensive income (loss) | 11,279 | 1,993 | 8,602 | (10,595 | ) | 11,279 | |||||||||||||||
| Comprehensive income | $ | 135,566 | $ | 93,182 | $ | 51,429 | $ | (144,611 | ) | $ | 135,566 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Six Months Ended June 30, 2013 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 454,020 | $ | 689,509 | $ | 0 | $ | 1,143,529 | |||||||||||
| Cost of goods sold | 0 | 234,145 | 571,549 | 0 | 805,694 | ||||||||||||||||
| Gross profit | 0 | 219,875 | 117,960 | 0 | 337,835 | ||||||||||||||||
| Selling, general, and administrative expenses | 3,464 | 43,135 | 34,263 | 0 | 80,862 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 46,057 | 21,393 | 0 | 67,450 | ||||||||||||||||
| Operating (loss) profit | (3,464 | ) | 130,683 | 62,304 | 0 | 189,523 | |||||||||||||||
| Interest and financing expenses, net | 9,559 | (2,010 | ) | 1,806 | 0 | 9,355 | |||||||||||||||
| Other (expense) income, net | 5,819 | (6 | ) | 308 | 0 | 6,121 | |||||||||||||||
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | (7,204 | ) | 132,687 | 60,806 | 0 | 186,289 | |||||||||||||||
| Income tax (benefit) expense | (2,772 | ) | 41,796 | 15,940 | 0 | 54,964 | |||||||||||||||
| Equity income of subsidiaries | 136,277 | 0 | 0 | (136,277 | ) | 0 | |||||||||||||||
| Income from continuing operations | 131,845 | 90,891 | 44,866 | (136,277 | ) | 131,325 | |||||||||||||||
| (Loss) income from operations of discontinued business, net of tax | 0 | 0 | 520 | 0 | 520 | ||||||||||||||||
| Net income | 131,845 | 90,891 | 45,386 | (136,277 | ) | 131,845 | |||||||||||||||
| Other comprehensive income (loss) | (17,306 | ) | (3,105 | ) | (15,847 | ) | 18,952 | (17,306 | ) | ||||||||||||
| Comprehensive income | $ | 114,539 | $ | 87,786 | $ | 29,539 | $ | (117,325 | ) | $ | 114,539 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Balance Sheets | |||||||||||||||||||||
| 30-Jun-14 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| ASSETS | |||||||||||||||||||||
| Cash and cash equivalents | $ | 38 | $ | 3,443 | $ | 110,163 | $ | 0 | $ | 113,644 | |||||||||||
| Trade and other accounts receivable, net | 1,714 | 109,668 | 236,248 | 0 | 347,630 | ||||||||||||||||
| Amounts due from affiliated companies | 88,743 | 238,071 | 89,755 | (416,569 | ) | 0 | |||||||||||||||
| Inventories | 0 | 123,005 | 206,378 | 0 | 329,383 | ||||||||||||||||
| Deferred income taxes | 2,590 | 3,313 | 443 | 0 | 6,346 | ||||||||||||||||
| Prepaid expenses and other current assets | 12,721 | 20,496 | 2,812 | 0 | 36,029 | ||||||||||||||||
| Total current assets | 105,806 | 497,996 | 645,799 | (416,569 | ) | 833,032 | |||||||||||||||
| Amounts due from affiliated companies | 0 | 112,289 | 8,025 | (120,314 | ) | 0 | |||||||||||||||
| Property, plant, and equipment, at cost | 0 | 701,212 | 302,307 | 0 | 1,003,519 | ||||||||||||||||
| Less accumulated depreciation and amortization | 0 | 563,444 | 149,628 | 0 | 713,072 | ||||||||||||||||
| Net property, plant, and equipment | 0 | 137,768 | 152,679 | 0 | 290,447 | ||||||||||||||||
| Investment in consolidated subsidiaries | 906,161 | 0 | 0 | (906,161 | ) | 0 | |||||||||||||||
| Prepaid pension cost | 26,476 | 17,320 | 18,086 | 0 | 61,882 | ||||||||||||||||
| Deferred income taxes | 20,756 | 0 | 7,158 | (6,184 | ) | 21,730 | |||||||||||||||
| Intangibles (net of amortization) and goodwill | 0 | 14,117 | 6,221 | 0 | 20,338 | ||||||||||||||||
| Deferred charges and other assets | 34,509 | 9,129 | 1,283 | 0 | 44,921 | ||||||||||||||||
| Total assets | $ | 1,093,708 | $ | 788,619 | $ | 839,251 | $ | (1,449,228 | ) | $ | 1,272,350 | ||||||||||
| LIABILITIES AND SHAREHOLDERS' EQUITY | |||||||||||||||||||||
| Accounts payable | $ | 6 | $ | 82,305 | $ | 55,168 | $ | 0 | $ | 137,479 | |||||||||||
| Accrued expenses | 11,972 | 38,475 | 22,559 | 0 | 73,006 | ||||||||||||||||
| Dividends payable | 12,578 | 0 | 0 | 0 | 12,578 | ||||||||||||||||
| Amounts due to affiliated companies | 117,104 | 177,157 | 122,308 | (416,569 | ) | 0 | |||||||||||||||
| Income taxes payable | 0 | 384 | 11,588 | 0 | 11,972 | ||||||||||||||||
| Other current liabilities | 0 | 7,927 | 3,096 | 0 | 11,023 | ||||||||||||||||
| Total current liabilities | 141,660 | 306,248 | 214,719 | (416,569 | ) | 246,058 | |||||||||||||||
| Long-term debt | 353,497 | 0 | 0 | 0 | 353,497 | ||||||||||||||||
| Amounts due to affiliated companies | 0 | 8,025 | 112,289 | (120,314 | ) | 0 | |||||||||||||||
| Other noncurrent liabilities | 85,054 | 41,537 | 38,891 | (6,184 | ) | 159,298 | |||||||||||||||
| Total liabilities | 580,211 | 355,810 | 365,899 | (543,067 | ) | 758,853 | |||||||||||||||
| Shareholders' equity: | |||||||||||||||||||||
| Common stock and paid-in capital | 0 | 260,776 | 126,662 | (387,438 | ) | 0 | |||||||||||||||
| Accumulated other comprehensive loss | (48,807 | ) | (3,792 | ) | (31,758 | ) | 35,550 | (48,807 | ) | ||||||||||||
| Retained earnings | 562,304 | 175,825 | 378,448 | (554,273 | ) | 562,304 | |||||||||||||||
| Total shareholders' equity | 513,497 | 432,809 | 473,352 | (906,161 | ) | 513,497 | |||||||||||||||
| Total liabilities and shareholders' equity | $ | 1,093,708 | $ | 788,619 | $ | 839,251 | $ | (1,449,228 | ) | $ | 1,272,350 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Balance Sheets | |||||||||||||||||||||
| 31-Dec-13 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| ASSETS | |||||||||||||||||||||
| Cash and cash equivalents | $ | 1,038 | $ | 102,205 | $ | 135,460 | $ | 0 | $ | 238,703 | |||||||||||
| Trade and other accounts receivable, net | 1,512 | 108,908 | 199,431 | (4 | ) | 309,847 | |||||||||||||||
| Amounts due from affiliated companies | 0 | 139,710 | 77,098 | (216,808 | ) | 0 | |||||||||||||||
| Inventories | 0 | 115,442 | 192,076 | 0 | 307,518 | ||||||||||||||||
| Deferred income taxes | 2,600 | 4,919 | 748 | 0 | 8,267 | ||||||||||||||||
| Prepaid expenses and other current assets | 13,055 | 17,886 | 2,043 | 0 | 32,984 | ||||||||||||||||
| Total current assets | 18,205 | 489,070 | 606,856 | (216,812 | ) | 897,319 | |||||||||||||||
| Amounts due from affiliated companies | 0 | 113,076 | 8,025 | (121,101 | ) | 0 | |||||||||||||||
| Property, plant, and equipment, at cost | 0 | 692,024 | 293,172 | 0 | 985,196 | ||||||||||||||||
| Less accumulated depreciation and amortization | 0 | 555,805 | 144,355 | 0 | 700,160 | ||||||||||||||||
| Net property, plant, and equipment | 0 | 136,219 | 148,817 | 0 | 285,036 | ||||||||||||||||
| Investment in consolidated subsidiaries | 955,560 | 0 | 0 | (955,560 | ) | 0 | |||||||||||||||
| Prepaid pension cost | 23,276 | 16,092 | 15,719 | 0 | 55,087 | ||||||||||||||||
| Deferred income taxes | 20,999 | 0 | 7,984 | (6,022 | ) | 22,961 | |||||||||||||||
| Intangibles (net of amortization) and goodwill | 0 | 17,036 | 6,283 | 0 | 23,319 | ||||||||||||||||
| Deferred charges and other assets | 33,257 | 9,014 | 1,281 | 0 | 43,552 | ||||||||||||||||
| Total assets | $ | 1,051,297 | $ | 780,507 | $ | 794,965 | $ | (1,299,495 | ) | $ | 1,327,274 | ||||||||||
| LIABILITIES AND SHAREHOLDERS' EQUITY | |||||||||||||||||||||
| Accounts payable | $ | 6 | $ | 86,649 | $ | 47,477 | $ | 0 | $ | 134,132 | |||||||||||
| Accrued expenses | 10,788 | 46,401 | 20,803 | 0 | 77,992 | ||||||||||||||||
| Dividends payable | 12,996 | 0 | 0 | 0 | 12,996 | ||||||||||||||||
| Amounts due to affiliated companies | 23,183 | 77,098 | 116,527 | (216,808 | ) | 0 | |||||||||||||||
| Income taxes payable | 0 | 0 | 11,423 | (4 | ) | 11,419 | |||||||||||||||
| Other current liabilities | 0 | 7,828 | 3,247 | 0 | 11,075 | ||||||||||||||||
| Total current liabilities | 46,973 | 217,976 | 199,477 | (216,812 | ) | 247,614 | |||||||||||||||
| Long-term debt | 349,467 | 0 | 0 | 0 | 349,467 | ||||||||||||||||
| Amounts due to affiliated companies | 0 | 8,025 | 113,076 | (121,101 | ) | 0 | |||||||||||||||
| Other noncurrent liabilities | 82,409 | 41,014 | 40,344 | (6,022 | ) | 157,745 | |||||||||||||||
| Total liabilities | 478,849 | 267,015 | 352,897 | (343,935 | ) | 754,826 | |||||||||||||||
| Shareholders' equity: | |||||||||||||||||||||
| Common stock and paid-in capital | 0 | 260,776 | 126,661 | (387,437 | ) | 0 | |||||||||||||||
| Accumulated other comprehensive loss | (60,086 | ) | (5,786 | ) | (40,360 | ) | 46,146 | (60,086 | ) | ||||||||||||
| Retained earnings | 632,534 | 258,502 | 355,767 | (614,269 | ) | 632,534 | |||||||||||||||
| Total shareholders' equity | 572,448 | 513,492 | 442,068 | (955,560 | ) | 572,448 | |||||||||||||||
| Total liabilities and shareholders' equity | $ | 1,051,297 | $ | 780,507 | $ | 794,965 | $ | (1,299,495 | ) | $ | 1,327,274 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Condensed Consolidating Statements of Cash Flows | |||||||||||||||||||||
| Six Months Ended June 30, 2014 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Cash provided from (used in) operating activities | $ | 190,441 | $ | 105,299 | $ | 4,626 | $ | (215,850 | ) | $ | 84,516 | ||||||||||
| Cash flows from investing activities: | |||||||||||||||||||||
| Capital expenditures | 0 | (11,942 | ) | (8,712 | ) | 0 | (20,654 | ) | |||||||||||||
| Deposits for interest rate swap | (4,861 | ) | 0 | 0 | 0 | (4,861 | ) | ||||||||||||||
| Return of deposits for interest rate swap | 2,930 | 0 | 0 | 0 | 2,930 | ||||||||||||||||
| Other, net | (2,485 | ) | 0 | 0 | 0 | (2,485 | ) | ||||||||||||||
| Cash provided from (used in) investing activities | (4,416 | ) | (11,942 | ) | (8,712 | ) | 0 | (25,070 | ) | ||||||||||||
| Cash flows from financing activities: | |||||||||||||||||||||
| Net borrowings (repayments) under revolving credit facility | 4,000 | 0 | 0 | 0 | 4,000 | ||||||||||||||||
| Net (repayments) borrowings under lines of credit | 0 | 0 | (151 | ) | 0 | (151 | ) | ||||||||||||||
| Dividends paid | (28,155 | ) | (194,007 | ) | (20,147 | ) | 214,154 | (28,155 | ) | ||||||||||||
| Repurchases of common stock | (162,867 | ) | 0 | 0 | 0 | (162,867 | ) | ||||||||||||||
| Issuance of intercompany note payable, net | 0 | (10,748 | ) | 10,748 | 0 | 0 | |||||||||||||||
| Repayment of intercompany note payable, net | 0 | 14,329 | (14,329 | ) | 0 | 0 | |||||||||||||||
| Financing from affiliated companies | (3 | ) | (1,693 | ) | 0 | 1,696 | 0 | ||||||||||||||
| Cash provided from (used in) financing activities | (187,025 | ) | (192,119 | ) | (23,879 | ) | 215,850 | (187,173 | ) | ||||||||||||
| Effect of foreign exchange on cash and cash equivalents | 0 | 0 | 2,668 | 0 | 2,668 | ||||||||||||||||
| (Decrease) increase in cash and cash equivalents | (1,000 | ) | (98,762 | ) | (25,297 | ) | 0 | (125,059 | ) | ||||||||||||
| Cash and cash equivalents at beginning of year | 1,038 | 102,205 | 135,460 | 0 | 238,703 | ||||||||||||||||
| Cash and cash equivalents at end of period | $ | 38 | $ | 3,443 | $ | 110,163 | $ | 0 | $ | 113,644 | |||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Condensed Consolidating Statements of Cash Flows | |||||||||||||||||||||
| Six Months Ended June 30, 2013 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Cash provided from (used in) operating activities | $ | 94,404 | $ | (45,219 | ) | $ | 32,525 | $ | 41,196 | $ | 122,906 | ||||||||||
| Cash flows from investing activities: | |||||||||||||||||||||
| Capital expenditures | 0 | (14,058 | ) | (17,791 | ) | 0 | (31,849 | ) | |||||||||||||
| Deposits for interest rate swap | (7,762 | ) | 0 | 0 | 0 | (7,762 | ) | ||||||||||||||
| Return of deposits for interest rate swap | 17,110 | 0 | 0 | 0 | 17,110 | ||||||||||||||||
| Other, net | (2,464 | ) | 0 | 0 | 0 | (2,464 | ) | ||||||||||||||
| Cash provided from (used in) investing activities | 6,884 | (14,058 | ) | (17,791 | ) | 0 | (24,965 | ) | |||||||||||||
| Cash flows from financing activities: | |||||||||||||||||||||
| Net borrowings (repayments) under revolving credit facility | (60,000 | ) | 0 | 0 | 0 | (60,000 | ) | ||||||||||||||
| Net (repayments) borrowings under lines of credit | 0 | 0 | 3,404 | 0 | 3,404 | ||||||||||||||||
| Dividends paid | (23,980 | ) | (86,585 | ) | (9,916 | ) | 96,501 | (23,980 | ) | ||||||||||||
| Debt issuance costs | (1,145 | ) | 0 | 0 | 0 | (1,145 | ) | ||||||||||||||
| Repurchases of common stock | (26,798 | ) | 0 | 0 | 0 | (26,798 | ) | ||||||||||||||
| Issuance of intercompany note payable, net | 0 | (4,207 | ) | 4,207 | 0 | 0 | |||||||||||||||
| Repayment of intercompany note payable, net | 5,639 | 13,402 | (19,041 | ) | 0 | 0 | |||||||||||||||
| Financing from affiliated companies | (2 | ) | 137,699 | 0 | (137,697 | ) | 0 | ||||||||||||||
| Cash provided from (used in) financing activities | (106,286 | ) | 60,309 | (21,346 | ) | (41,196 | ) | (108,519 | ) | ||||||||||||
| Effect of foreign exchange on cash and cash equivalents | 0 | 0 | (5,006 | ) | 0 | (5,006 | ) | ||||||||||||||
| (Decrease) increase in cash and cash equivalents | (4,998 | ) | 1,032 | (11,618 | ) | 0 | (15,584 | ) | |||||||||||||
| Cash and cash equivalents at beginning of year | 5,001 | 3,956 | 80,172 | 0 | 89,129 | ||||||||||||||||
| Cash and cash equivalents at end of period | $ | 3 | $ | 4,988 | $ | 68,554 | $ | 0 | $ | 73,545 | |||||||||||
Recently_Issued_Accounting_Pro
| Recently Issued Accounting Pronouncements | 6 Months Ended |
| Jun. 30, 2014 | |
| New Accounting Pronouncements and Changes in Accounting Principles [Abstract] | ' |
| Recently Issued Accounting Pronouncements | ' |
| Recently Issued Accounting Pronouncements | |
| In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (ASU 2014-09). ASU 2014-09 replaces the previous guidance and clarifies the principles for revenue recognition. It requires a five-step process for revenue recognition that represents the transfer of goods or services to customers in an amount that reflects the consideration expected to be received by a company. ASU 2014-09 also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenues and cash flows from contracts with customers. ASU 2014-09 is effective for reporting periods beginning after December 15, 2016, and early adoption is prohibited. Entities can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact that the adoption of ASU 2014-09 will have on our consolidated financial statements. |
Derivatives_and_Hedging_Activi1
| Derivatives and Hedging Activities (Policies) | 6 Months Ended |
| Jun. 30, 2014 | |
| 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. |
Fair_Value_Measurements_Policy
| Fair Value Measurements (Policy) | 6 Months Ended |
| Jun. 30, 2014 | |
| Fair Value Disclosures [Abstract] | ' |
| Fair Value Measurements | ' |
| We determine the fair value of derivative instruments shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of the instrument. The analysis reflects the contractual term of the derivative, 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 derivative fall within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivative 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 derivative. As of June 30, 2014 and December 31, 2013, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivative and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivative. Accordingly, we have determined that our derivative valuation 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. |
Discontinued_Operations_Tables
| Discontinued Operations (Tables) | 6 Months Ended | ||||||||
| Jun. 30, 2014 | |||||||||
| Discontinued Operations and Disposal Groups [Abstract] | ' | ||||||||
| Schedule of Components of (Loss) Income From Operations of Discontinued Business | ' | ||||||||
| The components of (loss) income from operations of discontinued business, net of tax, were as follows: | |||||||||
| (in thousands) | Second Quarter Ended June 30, 2013 | Six Months Ended June 30, 2013 | |||||||
| Rental revenue | $ | 2,858 | $ | 5,716 | |||||
| Cost of rental | 1,068 | 2,136 | |||||||
| Interest, financing, and other expenses, net | 2,401 | 2,728 | |||||||
| (Loss) income before income tax expense | (611 | ) | 852 | ||||||
| Income tax (benefit) expense | (237 | ) | 332 | ||||||
| (Loss) income from operations of discontinued business, net of tax | $ | (374 | ) | $ | 520 | ||||
Segment_Information_Tables
| Segment Information (Tables) | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| Segment Reporting [Abstract] | ' | ||||||||||||||||
| Consolidated Revenue by Segment | ' | ||||||||||||||||
| Consolidated Revenue by Segment | |||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Petroleum additives | |||||||||||||||||
| Lubricant additives | $ | 513,421 | $ | 475,112 | $ | 986,770 | $ | 927,784 | |||||||||
| Fuel additives | 104,084 | 106,227 | 204,780 | 211,955 | |||||||||||||
| Total | 617,505 | 581,339 | 1,191,550 | 1,139,739 | |||||||||||||
| All other | 2,933 | 2,440 | 5,310 | 3,790 | |||||||||||||
| Consolidated revenue | $ | 620,438 | $ | 583,779 | $ | 1,196,860 | $ | 1,143,529 | |||||||||
| Segment Operating Profit | ' | ||||||||||||||||
| Segment Operating Profit | |||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Petroleum additives | $ | 109,089 | $ | 97,790 | $ | 205,268 | $ | 199,818 | |||||||||
| All other | 858 | 183 | 1,393 | (218 | ) | ||||||||||||
| Segment operating profit | 109,947 | 97,973 | 206,661 | 199,600 | |||||||||||||
| Corporate, general, and administrative expenses | (5,575 | ) | (5,189 | ) | (12,128 | ) | (10,405 | ) | |||||||||
| Interest and financing expenses, net | (4,346 | ) | (4,573 | ) | (8,510 | ) | (9,355 | ) | |||||||||
| Gain (loss) on interest rate swap agreement (a) | (2,270 | ) | 5,098 | (4,503 | ) | 5,775 | |||||||||||
| Other income, net | 161 | 570 | 192 | 674 | |||||||||||||
| Income from continuing operations before income tax expense | $ | 97,917 | $ | 93,879 | $ | 181,712 | $ | 186,289 | |||||||||
| (a) | The gain (loss) 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. | ||||||||||||||||
Pension_Plans_and_Other_Postre1
| Pension Plans and Other Postretirement Benefits (Tables) | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| 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 six months ended June 30, 2014, as well as the remaining cash contributions we expect to make during the year ending December 31, 2014 for both our domestic and foreign pension plans and postretirement benefit plans. | |||||||||||||||||
| (in thousands) | Actual Cash Contributions for Six Months Ended June 30, 2014 | Expected Remaining Cash Contributions for Year Ending December 31, 2014 | |||||||||||||||
| Domestic plans | |||||||||||||||||
| Pension benefits | $ | 6,325 | $ | 8,750 | |||||||||||||
| Postretirement benefits | 645 | 645 | |||||||||||||||
| Foreign plans | |||||||||||||||||
| Pension benefits | 3,383 | 3,471 | |||||||||||||||
| Postretirement benefits | 54 | 0 | |||||||||||||||
| 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 | ||||||||||||||||
| Second Quarter Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 2,388 | $ | 2,664 | $ | 405 | $ | 499 | |||||||||
| Interest cost | 2,737 | 2,383 | 690 | 681 | |||||||||||||
| Expected return on plan assets | (4,331 | ) | (3,617 | ) | (328 | ) | (364 | ) | |||||||||
| Amortization of prior service cost | 25 | 4 | 3 | 3 | |||||||||||||
| Amortization of actuarial net loss (gain) | 978 | 1,801 | (176 | ) | 0 | ||||||||||||
| Net periodic benefit cost (income) | $ | 1,797 | $ | 3,235 | $ | 594 | $ | 819 | |||||||||
| Domestic | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Six Months Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 4,775 | $ | 5,327 | $ | 810 | $ | 998 | |||||||||
| Interest cost | 5,475 | 4,767 | 1,382 | 1,363 | |||||||||||||
| Expected return on plan assets | (8,661 | ) | (7,234 | ) | (656 | ) | (728 | ) | |||||||||
| Amortization of prior service cost | 50 | 8 | 5 | 5 | |||||||||||||
| Amortization of actuarial net loss (gain) | 1,955 | 3,602 | (353 | ) | 0 | ||||||||||||
| Net periodic benefit cost (income) | $ | 3,594 | $ | 6,470 | $ | 1,188 | $ | 1,638 | |||||||||
| Foreign [Member] | ' | ||||||||||||||||
| Defined Benefit Plan Disclosure [Line Items] | ' | ||||||||||||||||
| Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans | ' | ||||||||||||||||
| Foreign | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Second Quarter Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 1,506 | $ | 1,321 | $ | 1 | $ | 8 | |||||||||
| Interest cost | 1,569 | 1,324 | 17 | 26 | |||||||||||||
| Expected return on plan assets | (2,098 | ) | (1,686 | ) | 0 | 0 | |||||||||||
| Amortization of prior service credit | (26 | ) | (2 | ) | 0 | 0 | |||||||||||
| Amortization of transition obligation | 0 | 0 | 2 | 13 | |||||||||||||
| Amortization of actuarial net loss | 286 | 346 | 3 | 10 | |||||||||||||
| Settlements and curtailments | 0 | 133 | (122 | ) | 71 | ||||||||||||
| Net periodic benefit cost (income) | $ | 1,237 | $ | 1,436 | $ | (99 | ) | $ | 128 | ||||||||
| Foreign | |||||||||||||||||
| Pension Benefits | Postretirement Benefits | ||||||||||||||||
| Six Months Ended June 30, | |||||||||||||||||
| (in thousands) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Service cost | $ | 3,001 | $ | 2,675 | $ | 3 | $ | 16 | |||||||||
| Interest cost | 3,124 | 2,681 | 41 | 53 | |||||||||||||
| Expected return on plan assets | (4,177 | ) | (3,415 | ) | 0 | 0 | |||||||||||
| Amortization of prior service credit | (52 | ) | (4 | ) | 0 | 0 | |||||||||||
| Amortization of transition obligation | 0 | 0 | 5 | 26 | |||||||||||||
| Amortization of actuarial net loss | 570 | 700 | 8 | 20 | |||||||||||||
| Settlements and curtailments | 0 | 133 | (122 | ) | 71 | ||||||||||||
| Net periodic benefit cost (income) | $ | 2,466 | $ | 2,770 | $ | (65 | ) | $ | 186 | ||||||||
Earnings_Per_Share_Tables
| Earnings Per Share (Tables) | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| Earnings Per Share [Abstract] | ' | ||||||||||||||||
| Calculated Basic and Diluted Earnings Per Share From Continuing Operations | ' | ||||||||||||||||
| The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share from continuing operations. | |||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||
| (in thousands, except per-share amounts) | 2014 | 2013 | 2014 | 2013 | |||||||||||||
| Earnings per share from continuing operations numerator: | |||||||||||||||||
| Income from continuing operations attributable to common shareholders before allocation of earnings to participating securities | $ | 66,764 | $ | 64,384 | $ | 124,287 | $ | 131,325 | |||||||||
| Income from continuing operations allocated to participating securities | 102 | 44 | 192 | 105 | |||||||||||||
| Income from continuing operations attributable to common shareholders after allocation of earnings to participating securities | $ | 66,662 | $ | 64,340 | $ | 124,095 | $ | 131,220 | |||||||||
| Earnings per share from continuing operations denominator: | |||||||||||||||||
| Weighted-average number of shares of common stock outstanding - basic and diluted | 12,732 | 13,303 | 12,842 | 13,340 | |||||||||||||
| Earnings per share from continuing operations - basic and diluted | $ | 5.24 | $ | 4.84 | $ | 9.66 | $ | 9.84 | |||||||||
Intangibles_Net_of_Amortizatio1
| Intangibles (Net of Amortization) and Goodwill (Tables) | 6 Months Ended | ||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | ' | ||||||||||||||||
| Schedule Of Information Related To Identifiable Intangibles | ' | ||||||||||||||||
| Identifiable Intangibles | |||||||||||||||||
| June 30, 2014 | December 31, 2013 | ||||||||||||||||
| (in thousands) | Gross | Accumulated | Gross | Accumulated | |||||||||||||
| Carrying | Amortization | Carrying | Amortization | ||||||||||||||
| Amount | Amount | ||||||||||||||||
| Amortizing intangible assets | |||||||||||||||||
| Formulas and technology | $ | 88,970 | $ | 79,635 | $ | 88,917 | $ | 77,217 | |||||||||
| Contracts | 7,127 | 5,973 | 7,127 | 5,528 | |||||||||||||
| Customer bases | 7,026 | 3,126 | 7,012 | 2,918 | |||||||||||||
| Trademarks and trade names | 1,600 | 690 | 1,591 | 610 | |||||||||||||
| Goodwill | 5,039 | 4,945 | |||||||||||||||
| $ | 109,762 | $ | 89,424 | $ | 109,592 | $ | 86,273 | ||||||||||
| Schedule Of Amortization Expense | ' | ||||||||||||||||
| Amortization expense was (in thousands): | |||||||||||||||||
| Second quarter ended June 30, 2014 | $ | 1,576 | |||||||||||||||
| Six months ended June 30, 2014 | 3,151 | ||||||||||||||||
| Second quarter ended June 30, 2013 | 1,864 | ||||||||||||||||
| Six months ended June 30, 2013 | 3,728 | ||||||||||||||||
| Schedule Of Estimated Annual Amortization Expense Related To Intangible Assets | ' | ||||||||||||||||
| Estimated amortization expense for the remainder of 2014, as well as annual amortization expense related to our intangible assets for the next five years is expected to be (in thousands): | |||||||||||||||||
| 2014 | $ | 3,012 | |||||||||||||||
| 2015 | 5,790 | ||||||||||||||||
| 2016 | 1,910 | ||||||||||||||||
| 2017 | 746 | ||||||||||||||||
| 2018 | 715 | ||||||||||||||||
| 2019 | 688 | ||||||||||||||||
Longterm_Debt_Tables
| Long-term Debt (Tables) | 6 Months Ended | ||||||||
| Jun. 30, 2014 | |||||||||
| Long-term Debt and Capital Lease Obligations [Abstract] | ' | ||||||||
| Schedule Of Long-Term Debt | ' | ||||||||
| (in thousands) | June 30, | December 31, | |||||||
| 2014 | 2013 | ||||||||
| Senior notes - 4.10% due 2022 | $ | 349,497 | $ | 349,467 | |||||
| Revolving credit facility | 4,000 | 0 | |||||||
| $ | 353,497 | $ | 349,467 | ||||||
| Schedule Of Unused Portion Of Revolving Credit Facility | ' | ||||||||
| The following table provides information related to the unused portion of our revolving credit facility: | |||||||||
| (in thousands) | June 30, | December 31, | |||||||
| 2014 | 2013 | ||||||||
| Maximum borrowing capacity under the revolving credit facility | $ | 650,000 | $ | 650,000 | |||||
| Outstanding borrowings under the revolving credit facility | 4,000 | 0 | |||||||
| Outstanding letters of credit | 3,100 | 3,100 | |||||||
| Unused portion of revolving credit facility | $ | 642,900 | $ | 646,900 | |||||
Derivatives_and_Hedging_Activi2
| Derivatives and Hedging Activities (Tables) | 6 Months Ended | ||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||
| 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. | |||||||||||||||||||
| Liability Derivatives | |||||||||||||||||||
| June 30, 2014 | December 31, 2013 | ||||||||||||||||||
| (in thousands) | Balance | Fair Value | Balance | Fair Value | |||||||||||||||
| Sheet | Sheet | ||||||||||||||||||
| Location | Location | ||||||||||||||||||
| Derivatives Not Designated as Hedging Instruments | |||||||||||||||||||
| Goldman Sachs interest rate swap | Accrued expenses and Other noncurrent liabilities | $ | 23,229 | Accrued expenses and Other noncurrent liabilities | $ | 21,211 | |||||||||||||
| Effect of Derivative Instruments on the Consolidated Statements of Income Non-Designated Derivatives | ' | ||||||||||||||||||
| The following table presents the effect of our derivative financial instruments on the Consolidated Statements of Income. | |||||||||||||||||||
| 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 | Amount of Gain (Loss) Recognized in | |||||||||||||||||
| Income on Derivatives | Income on Derivatives | ||||||||||||||||||
| Second Quarter Ended | Six Months Ended | ||||||||||||||||||
| June 30, | June 30, | ||||||||||||||||||
| 2014 | 2013 | 2014 | 2013 | ||||||||||||||||
| Goldman Sachs interest rate swap | Other (expense) income, net | $ | (2,270 | ) | $ | 5,097 | $ | (4,503 | ) | $ | 5,775 | ||||||||
Other_Comprehensive_Income_Los1
| Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended | ||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||
| 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 | Derivative Instruments | Foreign Currency Translation Adjustments | Accumulated Other | |||||||||||||||
| and Other Postretirement Benefits | Comprehensive (Loss) Income | ||||||||||||||||||
| Balance at December 31, 2012 | $ | (96,139 | ) | $ | (4,173 | ) | $ | (10,377 | ) | $ | (110,689 | ) | |||||||
| Other comprehensive income (loss) before reclassifications | 285 | 0 | (22,410 | ) | (22,125 | ) | |||||||||||||
| Amounts reclassified from accumulated other comprehensive loss | 3,127 | 1,692 | 0 | 4,819 | |||||||||||||||
| Other comprehensive income (loss) | 3,412 | 1,692 | (22,410 | ) | (17,306 | ) | |||||||||||||
| Balance at June 30, 2013 | $ | (92,727 | ) | $ | (2,481 | ) | $ | (32,787 | ) | $ | (127,995 | ) | |||||||
| Balance at December 31, 2013 | $ | (44,493 | ) | $ | 0 | $ | (15,593 | ) | $ | (60,086 | ) | ||||||||
| Other comprehensive income (loss) before reclassifications | (90 | ) | 0 | 9,560 | 9,470 | ||||||||||||||
| Amounts reclassified from accumulated other comprehensive loss | 1,809 | 0 | 0 | 1,809 | |||||||||||||||
| Other comprehensive income (loss) | 1,719 | 0 | 9,560 | 11,279 | |||||||||||||||
| Balance at June 30, 2014 | $ | (42,774 | ) | $ | 0 | $ | (6,033 | ) | $ | (48,807 | ) | ||||||||
| 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 | Second Quarter Ended | Six Months Ended | Affected Line Item on the Consolidated Statements of Income | ||||||||||||||||
| June 30, | June 30, | ||||||||||||||||||
| 2014 | 2013 | 2014 | 2013 | ||||||||||||||||
| Pension plans and other postretirement benefits: | |||||||||||||||||||
| Amortization of prior service (credit) cost | $ | (3 | ) | $ | 3 | $ | (6 | ) | $ | 5 | (a) | ||||||||
| Amortization of actuarial net loss | 705 | 1,362 | 1,412 | 2,725 | (a) | ||||||||||||||
| Settlements and curtailments | 399 | 378 | 399 | 378 | (a) | ||||||||||||||
| Amortization of transition obligation | 2 | 9 | 4 | 19 | (a) | ||||||||||||||
| Total pension plans and other postretirement benefits | 1,103 | 1,752 | 1,809 | 3,127 | |||||||||||||||
| Derivative instruments: | |||||||||||||||||||
| Amortization of mortgage loan interest rate swap | 0 | 1,466 | 0 | 1,666 | (Loss) income from operations of discontinued business, net of tax (b) | ||||||||||||||
| Amortization of construction loan interest rate swap | 0 | 13 | 0 | 26 | (Loss) income from operations of discontinued business, net of tax (b) | ||||||||||||||
| Total derivative instruments | 0 | 1,479 | 0 | 1,692 | |||||||||||||||
| Total reclassifications for the period | $ | 1,103 | $ | 3,231 | $ | 1,809 | $ | 4,819 | |||||||||||
| (a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 4 in this Form 10-Q and Note 18 in our 2013 Annual Report for further information. | |||||||||||||||||||
| (b) Amounts relate to the Foundry Park I mortgage loan interest rate swap and the construction loan interest rate swap. Amounts are presented net of income tax expense of $934 thousand for the mortgage loan interest rate swap and $8 thousand for the construction loan interest rate swap for the second quarter ended June 30, 2013 and $1.1 million for the mortgage loan interest rates swap and $16 thousand for the construction loan interest rate swap for the six months ended June 30, 2013. Due to the sale of the real estate assets of Foundry Park I in July 2013, the amounts recorded in accumulated other comprehensive loss for both interest rate swaps were completely recognized in the Consolidated Statements of Income in 2013. | |||||||||||||||||||
Fair_Value_Measurements_Tables
| Fair Value Measurements (Tables) | 6 Months Ended | ||||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||||
| 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) | June 30, 2014 | ||||||||||||||||||||
| Cash and cash equivalents | $ | 113,644 | $ | 113,644 | $ | 113,644 | $ | 0 | $ | 0 | |||||||||||
| Cash deposit for collateralized interest rate swap | 27,770 | 27,770 | 27,770 | 0 | 0 | ||||||||||||||||
| Interest rate swap liability | 23,229 | 23,229 | 0 | 23,229 | 0 | ||||||||||||||||
| December 31, 2013 | |||||||||||||||||||||
| Cash and cash equivalents | $ | 238,703 | $ | 238,703 | $ | 238,703 | $ | 0 | $ | 0 | |||||||||||
| Cash deposit for collateralized interest rate swap | 25,839 | 25,839 | 25,839 | 0 | 0 | ||||||||||||||||
| Interest rate swap liability | 21,211 | 21,211 | 0 | 21,211 | 0 | ||||||||||||||||
| Estimated Fair Value Of Long-Term Debt | ' | ||||||||||||||||||||
| June 30, 2014 | December 31, 2013 | ||||||||||||||||||||
| (in thousands) | Carrying | Fair | Carrying | Fair | |||||||||||||||||
| Amount | Value | Amount | Value | ||||||||||||||||||
| Long-term debt | $ | 353,497 | $ | 375,319 | $ | 349,467 | $ | 345,283 | |||||||||||||
Consolidating_Financial_Inform1
| Consolidating Financial Information (Tables) | 6 Months Ended | ||||||||||||||||||||
| Jun. 30, 2014 | |||||||||||||||||||||
| Consolidating Financial Information [Abstract] | ' | ||||||||||||||||||||
| Schedule Of Consolidating Statements Of Income And Comprehensive Income | ' | ||||||||||||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Second Quarter Ended June 30, 2014 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 239,631 | $ | 380,807 | $ | 0 | $ | 620,438 | |||||||||||
| Cost of goods sold | 0 | 117,140 | 322,552 | 0 | 439,692 | ||||||||||||||||
| Gross profit | 0 | 122,491 | 58,255 | 0 | 180,746 | ||||||||||||||||
| Selling, general, and administrative expenses | 1,609 | 22,131 | 17,173 | 0 | 40,913 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 25,604 | 9,763 | 0 | 35,367 | ||||||||||||||||
| Operating (loss) profit | (1,609 | ) | 74,756 | 31,319 | 0 | 104,466 | |||||||||||||||
| Interest and financing expenses, net | 4,535 | (1,028 | ) | 839 | 0 | 4,346 | |||||||||||||||
| Other (expense) income, net | (2,260 | ) | (36 | ) | 93 | 0 | (2,203 | ) | |||||||||||||
| (Loss) income before income taxes and equity income of subsidiaries | (8,404 | ) | 75,748 | 30,573 | 0 | 97,917 | |||||||||||||||
| Income tax (benefit) expense | (3,505 | ) | 27,556 | 7,102 | 0 | 31,153 | |||||||||||||||
| Equity income of subsidiaries | 71,663 | 0 | 0 | (71,663 | ) | 0 | |||||||||||||||
| Net income | 66,764 | 48,192 | 23,471 | (71,663 | ) | 66,764 | |||||||||||||||
| Other comprehensive income (loss) | 9,548 | 1,448 | 7,758 | (9,206 | ) | 9,548 | |||||||||||||||
| Comprehensive income | $ | 76,312 | $ | 49,640 | $ | 31,229 | $ | (80,869 | ) | $ | 76,312 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Second Quarter Ended June 30, 2013 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 233,955 | $ | 349,824 | $ | 0 | $ | 583,779 | |||||||||||
| Cost of goods sold | 0 | 122,851 | 291,500 | 0 | 414,351 | ||||||||||||||||
| Gross profit | 0 | 111,104 | 58,324 | 0 | 169,428 | ||||||||||||||||
| Selling, general, and administrative expenses | 1,779 | 22,059 | 16,083 | 0 | 39,921 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 24,104 | 12,325 | 0 | 36,429 | ||||||||||||||||
| Operating (loss) profit | (1,779 | ) | 64,941 | 29,916 | 0 | 93,078 | |||||||||||||||
| Interest and financing expenses, net | 4,749 | (1,072 | ) | 896 | 0 | 4,573 | |||||||||||||||
| Other (expense) income, net | 5,118 | (1 | ) | 257 | 0 | 5,374 | |||||||||||||||
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | (1,410 | ) | 66,012 | 29,277 | 0 | 93,879 | |||||||||||||||
| Income tax (benefit) expense | (759 | ) | 16,898 | 13,356 | 0 | 29,495 | |||||||||||||||
| Equity income of subsidiaries | 64,661 | 0 | 0 | (64,661 | ) | 0 | |||||||||||||||
| Income from continuing operations | 64,010 | 49,114 | 15,921 | (64,661 | ) | 64,384 | |||||||||||||||
| (Loss) income from operations of discontinued business, net of tax | 0 | 0 | (374 | ) | 0 | (374 | ) | ||||||||||||||
| Net income | 64,010 | 49,114 | 15,547 | (64,661 | ) | 64,010 | |||||||||||||||
| Other comprehensive income (loss) | (614 | ) | 665 | (2,102 | ) | 1,437 | (614 | ) | |||||||||||||
| Comprehensive income | $ | 63,396 | $ | 49,779 | $ | 13,445 | $ | (63,224 | ) | $ | 63,396 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Six Months Ended June 30, 2014 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 447,905 | $ | 748,955 | $ | 0 | $ | 1,196,860 | |||||||||||
| Cost of goods sold | 0 | 218,814 | 635,370 | 0 | 854,184 | ||||||||||||||||
| Gross profit | 0 | 229,091 | 113,585 | 0 | 342,676 | ||||||||||||||||
| Selling, general, and administrative expenses | 3,338 | 43,010 | 34,113 | 0 | 80,461 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 47,634 | 19,940 | 0 | 67,574 | ||||||||||||||||
| Operating (loss) profit | (3,338 | ) | 138,447 | 59,532 | 0 | 194,641 | |||||||||||||||
| Interest and financing expenses, net | 8,883 | (2,010 | ) | 1,637 | 0 | 8,510 | |||||||||||||||
| Other (expense) income, net | (4,492 | ) | (61 | ) | 134 | 0 | (4,419 | ) | |||||||||||||
| (Loss) income before income taxes and equity income of subsidiaries | (16,713 | ) | 140,396 | 58,029 | 0 | 181,712 | |||||||||||||||
| Income tax (benefit) expense | (6,984 | ) | 49,207 | 15,202 | 0 | 57,425 | |||||||||||||||
| Equity income of subsidiaries | 134,016 | 0 | 0 | (134,016 | ) | 0 | |||||||||||||||
| Net income | 124,287 | 91,189 | 42,827 | (134,016 | ) | 124,287 | |||||||||||||||
| Other comprehensive income (loss) | 11,279 | 1,993 | 8,602 | (10,595 | ) | 11,279 | |||||||||||||||
| Comprehensive income | $ | 135,566 | $ | 93,182 | $ | 51,429 | $ | (144,611 | ) | $ | 135,566 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Statements of Income and Comprehensive Income | |||||||||||||||||||||
| Six Months Ended June 30, 2013 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Net sales | $ | 0 | $ | 454,020 | $ | 689,509 | $ | 0 | $ | 1,143,529 | |||||||||||
| Cost of goods sold | 0 | 234,145 | 571,549 | 0 | 805,694 | ||||||||||||||||
| Gross profit | 0 | 219,875 | 117,960 | 0 | 337,835 | ||||||||||||||||
| Selling, general, and administrative expenses | 3,464 | 43,135 | 34,263 | 0 | 80,862 | ||||||||||||||||
| Research, development, and testing expenses | 0 | 46,057 | 21,393 | 0 | 67,450 | ||||||||||||||||
| Operating (loss) profit | (3,464 | ) | 130,683 | 62,304 | 0 | 189,523 | |||||||||||||||
| Interest and financing expenses, net | 9,559 | (2,010 | ) | 1,806 | 0 | 9,355 | |||||||||||||||
| Other (expense) income, net | 5,819 | (6 | ) | 308 | 0 | 6,121 | |||||||||||||||
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | (7,204 | ) | 132,687 | 60,806 | 0 | 186,289 | |||||||||||||||
| Income tax (benefit) expense | (2,772 | ) | 41,796 | 15,940 | 0 | 54,964 | |||||||||||||||
| Equity income of subsidiaries | 136,277 | 0 | 0 | (136,277 | ) | 0 | |||||||||||||||
| Income from continuing operations | 131,845 | 90,891 | 44,866 | (136,277 | ) | 131,325 | |||||||||||||||
| (Loss) income from operations of discontinued business, net of tax | 0 | 0 | 520 | 0 | 520 | ||||||||||||||||
| Net income | 131,845 | 90,891 | 45,386 | (136,277 | ) | 131,845 | |||||||||||||||
| Other comprehensive income (loss) | (17,306 | ) | (3,105 | ) | (15,847 | ) | 18,952 | (17,306 | ) | ||||||||||||
| Comprehensive income | $ | 114,539 | $ | 87,786 | $ | 29,539 | $ | (117,325 | ) | $ | 114,539 | ||||||||||
| Schedule of Consolidating Balance Sheets | ' | ||||||||||||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Balance Sheets | |||||||||||||||||||||
| 30-Jun-14 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| ASSETS | |||||||||||||||||||||
| Cash and cash equivalents | $ | 38 | $ | 3,443 | $ | 110,163 | $ | 0 | $ | 113,644 | |||||||||||
| Trade and other accounts receivable, net | 1,714 | 109,668 | 236,248 | 0 | 347,630 | ||||||||||||||||
| Amounts due from affiliated companies | 88,743 | 238,071 | 89,755 | (416,569 | ) | 0 | |||||||||||||||
| Inventories | 0 | 123,005 | 206,378 | 0 | 329,383 | ||||||||||||||||
| Deferred income taxes | 2,590 | 3,313 | 443 | 0 | 6,346 | ||||||||||||||||
| Prepaid expenses and other current assets | 12,721 | 20,496 | 2,812 | 0 | 36,029 | ||||||||||||||||
| Total current assets | 105,806 | 497,996 | 645,799 | (416,569 | ) | 833,032 | |||||||||||||||
| Amounts due from affiliated companies | 0 | 112,289 | 8,025 | (120,314 | ) | 0 | |||||||||||||||
| Property, plant, and equipment, at cost | 0 | 701,212 | 302,307 | 0 | 1,003,519 | ||||||||||||||||
| Less accumulated depreciation and amortization | 0 | 563,444 | 149,628 | 0 | 713,072 | ||||||||||||||||
| Net property, plant, and equipment | 0 | 137,768 | 152,679 | 0 | 290,447 | ||||||||||||||||
| Investment in consolidated subsidiaries | 906,161 | 0 | 0 | (906,161 | ) | 0 | |||||||||||||||
| Prepaid pension cost | 26,476 | 17,320 | 18,086 | 0 | 61,882 | ||||||||||||||||
| Deferred income taxes | 20,756 | 0 | 7,158 | (6,184 | ) | 21,730 | |||||||||||||||
| Intangibles (net of amortization) and goodwill | 0 | 14,117 | 6,221 | 0 | 20,338 | ||||||||||||||||
| Deferred charges and other assets | 34,509 | 9,129 | 1,283 | 0 | 44,921 | ||||||||||||||||
| Total assets | $ | 1,093,708 | $ | 788,619 | $ | 839,251 | $ | (1,449,228 | ) | $ | 1,272,350 | ||||||||||
| LIABILITIES AND SHAREHOLDERS' EQUITY | |||||||||||||||||||||
| Accounts payable | $ | 6 | $ | 82,305 | $ | 55,168 | $ | 0 | $ | 137,479 | |||||||||||
| Accrued expenses | 11,972 | 38,475 | 22,559 | 0 | 73,006 | ||||||||||||||||
| Dividends payable | 12,578 | 0 | 0 | 0 | 12,578 | ||||||||||||||||
| Amounts due to affiliated companies | 117,104 | 177,157 | 122,308 | (416,569 | ) | 0 | |||||||||||||||
| Income taxes payable | 0 | 384 | 11,588 | 0 | 11,972 | ||||||||||||||||
| Other current liabilities | 0 | 7,927 | 3,096 | 0 | 11,023 | ||||||||||||||||
| Total current liabilities | 141,660 | 306,248 | 214,719 | (416,569 | ) | 246,058 | |||||||||||||||
| Long-term debt | 353,497 | 0 | 0 | 0 | 353,497 | ||||||||||||||||
| Amounts due to affiliated companies | 0 | 8,025 | 112,289 | (120,314 | ) | 0 | |||||||||||||||
| Other noncurrent liabilities | 85,054 | 41,537 | 38,891 | (6,184 | ) | 159,298 | |||||||||||||||
| Total liabilities | 580,211 | 355,810 | 365,899 | (543,067 | ) | 758,853 | |||||||||||||||
| Shareholders' equity: | |||||||||||||||||||||
| Common stock and paid-in capital | 0 | 260,776 | 126,662 | (387,438 | ) | 0 | |||||||||||||||
| Accumulated other comprehensive loss | (48,807 | ) | (3,792 | ) | (31,758 | ) | 35,550 | (48,807 | ) | ||||||||||||
| Retained earnings | 562,304 | 175,825 | 378,448 | (554,273 | ) | 562,304 | |||||||||||||||
| Total shareholders' equity | 513,497 | 432,809 | 473,352 | (906,161 | ) | 513,497 | |||||||||||||||
| Total liabilities and shareholders' equity | $ | 1,093,708 | $ | 788,619 | $ | 839,251 | $ | (1,449,228 | ) | $ | 1,272,350 | ||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Consolidating Balance Sheets | |||||||||||||||||||||
| 31-Dec-13 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| ASSETS | |||||||||||||||||||||
| Cash and cash equivalents | $ | 1,038 | $ | 102,205 | $ | 135,460 | $ | 0 | $ | 238,703 | |||||||||||
| Trade and other accounts receivable, net | 1,512 | 108,908 | 199,431 | (4 | ) | 309,847 | |||||||||||||||
| Amounts due from affiliated companies | 0 | 139,710 | 77,098 | (216,808 | ) | 0 | |||||||||||||||
| Inventories | 0 | 115,442 | 192,076 | 0 | 307,518 | ||||||||||||||||
| Deferred income taxes | 2,600 | 4,919 | 748 | 0 | 8,267 | ||||||||||||||||
| Prepaid expenses and other current assets | 13,055 | 17,886 | 2,043 | 0 | 32,984 | ||||||||||||||||
| Total current assets | 18,205 | 489,070 | 606,856 | (216,812 | ) | 897,319 | |||||||||||||||
| Amounts due from affiliated companies | 0 | 113,076 | 8,025 | (121,101 | ) | 0 | |||||||||||||||
| Property, plant, and equipment, at cost | 0 | 692,024 | 293,172 | 0 | 985,196 | ||||||||||||||||
| Less accumulated depreciation and amortization | 0 | 555,805 | 144,355 | 0 | 700,160 | ||||||||||||||||
| Net property, plant, and equipment | 0 | 136,219 | 148,817 | 0 | 285,036 | ||||||||||||||||
| Investment in consolidated subsidiaries | 955,560 | 0 | 0 | (955,560 | ) | 0 | |||||||||||||||
| Prepaid pension cost | 23,276 | 16,092 | 15,719 | 0 | 55,087 | ||||||||||||||||
| Deferred income taxes | 20,999 | 0 | 7,984 | (6,022 | ) | 22,961 | |||||||||||||||
| Intangibles (net of amortization) and goodwill | 0 | 17,036 | 6,283 | 0 | 23,319 | ||||||||||||||||
| Deferred charges and other assets | 33,257 | 9,014 | 1,281 | 0 | 43,552 | ||||||||||||||||
| Total assets | $ | 1,051,297 | $ | 780,507 | $ | 794,965 | $ | (1,299,495 | ) | $ | 1,327,274 | ||||||||||
| LIABILITIES AND SHAREHOLDERS' EQUITY | |||||||||||||||||||||
| Accounts payable | $ | 6 | $ | 86,649 | $ | 47,477 | $ | 0 | $ | 134,132 | |||||||||||
| Accrued expenses | 10,788 | 46,401 | 20,803 | 0 | 77,992 | ||||||||||||||||
| Dividends payable | 12,996 | 0 | 0 | 0 | 12,996 | ||||||||||||||||
| Amounts due to affiliated companies | 23,183 | 77,098 | 116,527 | (216,808 | ) | 0 | |||||||||||||||
| Income taxes payable | 0 | 0 | 11,423 | (4 | ) | 11,419 | |||||||||||||||
| Other current liabilities | 0 | 7,828 | 3,247 | 0 | 11,075 | ||||||||||||||||
| Total current liabilities | 46,973 | 217,976 | 199,477 | (216,812 | ) | 247,614 | |||||||||||||||
| Long-term debt | 349,467 | 0 | 0 | 0 | 349,467 | ||||||||||||||||
| Amounts due to affiliated companies | 0 | 8,025 | 113,076 | (121,101 | ) | 0 | |||||||||||||||
| Other noncurrent liabilities | 82,409 | 41,014 | 40,344 | (6,022 | ) | 157,745 | |||||||||||||||
| Total liabilities | 478,849 | 267,015 | 352,897 | (343,935 | ) | 754,826 | |||||||||||||||
| Shareholders' equity: | |||||||||||||||||||||
| Common stock and paid-in capital | 0 | 260,776 | 126,661 | (387,437 | ) | 0 | |||||||||||||||
| Accumulated other comprehensive loss | (60,086 | ) | (5,786 | ) | (40,360 | ) | 46,146 | (60,086 | ) | ||||||||||||
| Retained earnings | 632,534 | 258,502 | 355,767 | (614,269 | ) | 632,534 | |||||||||||||||
| Total shareholders' equity | 572,448 | 513,492 | 442,068 | (955,560 | ) | 572,448 | |||||||||||||||
| Total liabilities and shareholders' equity | $ | 1,051,297 | $ | 780,507 | $ | 794,965 | $ | (1,299,495 | ) | $ | 1,327,274 | ||||||||||
| Schedule Of Condensed Consolidating Statements Of Cash Flows | ' | ||||||||||||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Condensed Consolidating Statements of Cash Flows | |||||||||||||||||||||
| Six Months Ended June 30, 2014 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Cash provided from (used in) operating activities | $ | 190,441 | $ | 105,299 | $ | 4,626 | $ | (215,850 | ) | $ | 84,516 | ||||||||||
| Cash flows from investing activities: | |||||||||||||||||||||
| Capital expenditures | 0 | (11,942 | ) | (8,712 | ) | 0 | (20,654 | ) | |||||||||||||
| Deposits for interest rate swap | (4,861 | ) | 0 | 0 | 0 | (4,861 | ) | ||||||||||||||
| Return of deposits for interest rate swap | 2,930 | 0 | 0 | 0 | 2,930 | ||||||||||||||||
| Other, net | (2,485 | ) | 0 | 0 | 0 | (2,485 | ) | ||||||||||||||
| Cash provided from (used in) investing activities | (4,416 | ) | (11,942 | ) | (8,712 | ) | 0 | (25,070 | ) | ||||||||||||
| Cash flows from financing activities: | |||||||||||||||||||||
| Net borrowings (repayments) under revolving credit facility | 4,000 | 0 | 0 | 0 | 4,000 | ||||||||||||||||
| Net (repayments) borrowings under lines of credit | 0 | 0 | (151 | ) | 0 | (151 | ) | ||||||||||||||
| Dividends paid | (28,155 | ) | (194,007 | ) | (20,147 | ) | 214,154 | (28,155 | ) | ||||||||||||
| Repurchases of common stock | (162,867 | ) | 0 | 0 | 0 | (162,867 | ) | ||||||||||||||
| Issuance of intercompany note payable, net | 0 | (10,748 | ) | 10,748 | 0 | 0 | |||||||||||||||
| Repayment of intercompany note payable, net | 0 | 14,329 | (14,329 | ) | 0 | 0 | |||||||||||||||
| Financing from affiliated companies | (3 | ) | (1,693 | ) | 0 | 1,696 | 0 | ||||||||||||||
| Cash provided from (used in) financing activities | (187,025 | ) | (192,119 | ) | (23,879 | ) | 215,850 | (187,173 | ) | ||||||||||||
| Effect of foreign exchange on cash and cash equivalents | 0 | 0 | 2,668 | 0 | 2,668 | ||||||||||||||||
| (Decrease) increase in cash and cash equivalents | (1,000 | ) | (98,762 | ) | (25,297 | ) | 0 | (125,059 | ) | ||||||||||||
| Cash and cash equivalents at beginning of year | 1,038 | 102,205 | 135,460 | 0 | 238,703 | ||||||||||||||||
| Cash and cash equivalents at end of period | $ | 38 | $ | 3,443 | $ | 110,163 | $ | 0 | $ | 113,644 | |||||||||||
| NewMarket Corporation and Subsidiaries | |||||||||||||||||||||
| Condensed Consolidating Statements of Cash Flows | |||||||||||||||||||||
| Six Months Ended June 30, 2013 | |||||||||||||||||||||
| (in thousands) | Parent Company | Guarantor Subsidiaries | Non-Guarantor Subsidiaries | Total Consolidating Adjustments | Consolidated | ||||||||||||||||
| Cash provided from (used in) operating activities | $ | 94,404 | $ | (45,219 | ) | $ | 32,525 | $ | 41,196 | $ | 122,906 | ||||||||||
| Cash flows from investing activities: | |||||||||||||||||||||
| Capital expenditures | 0 | (14,058 | ) | (17,791 | ) | 0 | (31,849 | ) | |||||||||||||
| Deposits for interest rate swap | (7,762 | ) | 0 | 0 | 0 | (7,762 | ) | ||||||||||||||
| Return of deposits for interest rate swap | 17,110 | 0 | 0 | 0 | 17,110 | ||||||||||||||||
| Other, net | (2,464 | ) | 0 | 0 | 0 | (2,464 | ) | ||||||||||||||
| Cash provided from (used in) investing activities | 6,884 | (14,058 | ) | (17,791 | ) | 0 | (24,965 | ) | |||||||||||||
| Cash flows from financing activities: | |||||||||||||||||||||
| Net borrowings (repayments) under revolving credit facility | (60,000 | ) | 0 | 0 | 0 | (60,000 | ) | ||||||||||||||
| Net (repayments) borrowings under lines of credit | 0 | 0 | 3,404 | 0 | 3,404 | ||||||||||||||||
| Dividends paid | (23,980 | ) | (86,585 | ) | (9,916 | ) | 96,501 | (23,980 | ) | ||||||||||||
| Debt issuance costs | (1,145 | ) | 0 | 0 | 0 | (1,145 | ) | ||||||||||||||
| Repurchases of common stock | (26,798 | ) | 0 | 0 | 0 | (26,798 | ) | ||||||||||||||
| Issuance of intercompany note payable, net | 0 | (4,207 | ) | 4,207 | 0 | 0 | |||||||||||||||
| Repayment of intercompany note payable, net | 5,639 | 13,402 | (19,041 | ) | 0 | 0 | |||||||||||||||
| Financing from affiliated companies | (2 | ) | 137,699 | 0 | (137,697 | ) | 0 | ||||||||||||||
| Cash provided from (used in) financing activities | (106,286 | ) | 60,309 | (21,346 | ) | (41,196 | ) | (108,519 | ) | ||||||||||||
| Effect of foreign exchange on cash and cash equivalents | 0 | 0 | (5,006 | ) | 0 | (5,006 | ) | ||||||||||||||
| (Decrease) increase in cash and cash equivalents | (4,998 | ) | 1,032 | (11,618 | ) | 0 | (15,584 | ) | |||||||||||||
| Cash and cash equivalents at beginning of year | 5,001 | 3,956 | 80,172 | 0 | 89,129 | ||||||||||||||||
| Cash and cash equivalents at end of period | $ | 3 | $ | 4,988 | $ | 68,554 | $ | 0 | $ | 73,545 | |||||||||||
Discontinued_Operations_Narrat
| Discontinued Operations (Narrative) (Details) (Real Estate Assets Of Foundry Park I [Member], USD $) | 12 Months Ended | |
| In Millions, unless otherwise specified | Dec. 31, 2013 | Jul. 02, 2013 |
| Real Estate Assets Of Foundry Park I [Member] | ' | ' |
| Discontinued Operations [Line Items] | ' | ' |
| Sales price of discontinued operation | ' | $144 |
| Gain on sale of real estate assets, before tax | 36 | ' |
| Gain on sale of real estate assets, net of tax | $22 | ' |
Discontinued_Operations_Schedu
| Discontinued Operations (Schedule of Components of Income From Operations of Discontinued Business) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Discontinued Operations and Disposal Groups [Abstract] | ' | ' | ' | ' |
| Rental revenue | ' | $2,858 | ' | $5,716 |
| Cost of rental | ' | 1,068 | ' | 2,136 |
| Interest, financing, and other expenses, net | ' | 2,401 | ' | 2,728 |
| (Loss) income before income tax expense | ' | -611 | ' | 852 |
| Income tax (benefit) expense | ' | -237 | ' | 332 |
| (Loss) income from operations of discontinued business, net of tax | $0 | ($374) | $0 | $520 |
Segment_Information_Consolidat
| Segment Information (Consolidated Revenue By Segment) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Segment Information [Line Items] | ' | ' | ' | ' |
| Consolidated revenue | $620,438 | $583,779 | $1,196,860 | $1,143,529 |
| Petroleum Additives [Member] | ' | ' | ' | ' |
| Segment Information [Line Items] | ' | ' | ' | ' |
| Consolidated revenue | 617,505 | 581,339 | 1,191,550 | 1,139,739 |
| All Other [Member] | ' | ' | ' | ' |
| Segment Information [Line Items] | ' | ' | ' | ' |
| Consolidated revenue | 2,933 | 2,440 | 5,310 | 3,790 |
| Lubricant Additives [Member] | Petroleum Additives [Member] | ' | ' | ' | ' |
| Segment Information [Line Items] | ' | ' | ' | ' |
| Consolidated revenue | 513,421 | 475,112 | 986,770 | 927,784 |
| Fuel Additives [Member] | Petroleum Additives [Member] | ' | ' | ' | ' |
| Segment Information [Line Items] | ' | ' | ' | ' |
| Consolidated revenue | $104,084 | $106,227 | $204,780 | $211,955 |
Segment_Information_Segment_Op
| Segment Information (Segment Operating Profit) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||||||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | ||||
| Segment Information [Line Items] | ' | ' | ' | ' | ||||
| Segment operating profit | $104,466 | $93,078 | $194,641 | $189,523 | ||||
| Corporate, general, and administrative expenses | -40,913 | -39,921 | -80,461 | -80,862 | ||||
| Interest and financing expenses, net | -4,346 | -4,573 | -8,510 | -9,355 | ||||
| Gain (loss) on interest rate swap agreement | -2,270 | [1] | 5,098 | [1] | -4,503 | [1] | 5,775 | [1] |
| Other income, net | 161 | 570 | 192 | 674 | ||||
| Income from continuing operations before income tax expense | 97,917 | 93,879 | 181,712 | 186,289 | ||||
| Petroleum Additives [Member] | ' | ' | ' | ' | ||||
| Segment Information [Line Items] | ' | ' | ' | ' | ||||
| Segment operating profit | 109,089 | 97,790 | 205,268 | 199,818 | ||||
| All Other [Member] | ' | ' | ' | ' | ||||
| Segment Information [Line Items] | ' | ' | ' | ' | ||||
| Segment operating profit | 858 | 183 | 1,393 | -218 | ||||
| Operating Segments [Member] | ' | ' | ' | ' | ||||
| Segment Information [Line Items] | ' | ' | ' | ' | ||||
| Segment operating profit | 109,947 | 97,973 | 206,661 | 199,600 | ||||
| Corporate, Non-Segment [Member] | ' | ' | ' | ' | ||||
| Segment Information [Line Items] | ' | ' | ' | ' | ||||
| Corporate, general, and administrative expenses | ($5,575) | ($5,189) | ($12,128) | ($10,405) | ||||
| [1] | The gain (loss) 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. | |||||||
Pension_Plans_and_Other_Postre2
| Pension Plans and Other Postretirement Benefits (Cash Contributions Made And Expected Remaining Contributions For Domestic And Foreign Pension And Postretirement Benefit Plans) (Details) (USD $) | 6 Months Ended | |
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' |
| Actual Cash Contributions, Pension benefits | $9,708 | $15,685 |
| Actual Cash Contributions, Postretirement benefits | 699 | 872 |
| Domestic Pension Benefits [Member] | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' |
| Actual Cash Contributions, Pension benefits | 6,325 | ' |
| Expected Remaining Cash Contributions | 8,750 | ' |
| Domestic Postretirement Benefits [Member] | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' |
| Actual Cash Contributions, Postretirement benefits | 645 | ' |
| Expected Remaining Cash Contributions | 645 | ' |
| Foreign Pension Benefits [Member] | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' |
| Actual Cash Contributions, Pension benefits | 3,383 | ' |
| Expected Remaining Cash Contributions | 3,471 | ' |
| Foreign Postretirement Benefits [Member] | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' |
| Actual Cash Contributions, Postretirement benefits | 54 | ' |
| Expected Remaining Cash Contributions | $0 | ' |
Pension_Plans_and_Other_Postre3
| Pension Plans and Other Postretirement Benefits (Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Domestic Pension Benefits [Member] | ' | ' | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' | ' |
| Service cost | $2,388 | $2,664 | $4,775 | $5,327 |
| Interest cost | 2,737 | 2,383 | 5,475 | 4,767 |
| Expected return on plan assets | -4,331 | -3,617 | -8,661 | -7,234 |
| Amortization of prior service (credit) cost | 25 | 4 | 50 | 8 |
| Amortization of actuarial net loss (gain) | 978 | 1,801 | 1,955 | 3,602 |
| Net periodic benefit cost (income) | 1,797 | 3,235 | 3,594 | 6,470 |
| Domestic Postretirement Benefits [Member] | ' | ' | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' | ' |
| Service cost | 405 | 499 | 810 | 998 |
| Interest cost | 690 | 681 | 1,382 | 1,363 |
| Expected return on plan assets | -328 | -364 | -656 | -728 |
| Amortization of prior service (credit) cost | 3 | 3 | 5 | 5 |
| Amortization of actuarial net loss (gain) | -176 | 0 | -353 | 0 |
| Net periodic benefit cost (income) | 594 | 819 | 1,188 | 1,638 |
| Foreign Pension Benefits [Member] | ' | ' | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' | ' |
| Service cost | 1,506 | 1,321 | 3,001 | 2,675 |
| Interest cost | 1,569 | 1,324 | 3,124 | 2,681 |
| Expected return on plan assets | -2,098 | -1,686 | -4,177 | -3,415 |
| Amortization of prior service (credit) cost | -26 | -2 | -52 | -4 |
| Amortization of transition obligation | 0 | 0 | 0 | 0 |
| Amortization of actuarial net loss (gain) | 286 | 346 | 570 | 700 |
| Settlements and curtailments | 0 | 133 | 0 | 133 |
| Net periodic benefit cost (income) | 1,237 | 1,436 | 2,466 | 2,770 |
| Foreign Postretirement Benefits [Member] | ' | ' | ' | ' |
| Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' | ' |
| Service cost | 1 | 8 | 3 | 16 |
| Interest cost | 17 | 26 | 41 | 53 |
| Expected return on plan assets | 0 | 0 | 0 | 0 |
| Amortization of prior service (credit) cost | 0 | 0 | 0 | 0 |
| Amortization of transition obligation | 2 | 13 | 5 | 26 |
| Amortization of actuarial net loss (gain) | 3 | 10 | 8 | 20 |
| Settlements and curtailments | -122 | 71 | -122 | 71 |
| Net periodic benefit cost (income) | ($99) | $128 | ($65) | $186 |
Earnings_Per_Share_Details
| Earnings Per Share (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, except Share data, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Earnings Per Share [Abstract] | ' | ' | ' | ' |
| Shares of nonvested restricted stock (in shares) | 19,865 | 11,585 | 19,865 | 11,585 |
| Earnings per share from continuing operations numerator: | ' | ' | ' | ' |
| Income from continuing operations attributable to common shareholders before allocation of earnings to participating securities | $66,764 | $64,384 | $124,287 | $131,325 |
| Income from continuing operations allocated to participating securities | 102 | 44 | 192 | 105 |
| Income from continuing operations attributable to common shareholders after allocation of earnings to participating securities | $66,662 | $64,340 | $124,095 | $131,220 |
| Earnings per share from continuing operations denominator: | ' | ' | ' | ' |
| Weighted-average number of shares of common stock outstanding - basic and diluted (in shares) | 12,732,000 | 13,303,000 | 12,842,000 | 13,340,000 |
| Earnings per share from continuing operations - basic and diluted (in dollars per share) | $5.24 | $4.84 | $9.66 | $9.84 |
Intangibles_Net_of_Amortizatio2
| Intangibles (Net of Amortization) and Goodwill (Narrative) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2014 |
| Customer Bases [Member] | Trademarks And Trade Names [Member] | Minimum [Member] | Minimum [Member] | Maximum [Member] | Maximum [Member] | |||
| Contracts [Member] | Formulas And Technology [Member] | Contracts [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 |
Intangibles_Net_of_Amortizatio3
| Intangibles (Net of Amortization) and Goodwill (Schedule Of Information Related To Identifiable Intangibles (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| In Thousands, unless otherwise specified | ||
| Finite-Lived Intangible Assets [Line Items] | ' | ' |
| Amortizing intangible assets, Accumulated Amortization | $89,424 | $86,273 |
| Goodwill, Gross Carrying Amount | 5,039 | 4,945 |
| Amortizing intangible assets and Goodwill, Gross Carrying Amount | 109,762 | 109,592 |
| Formulas And Technology [Member] | ' | ' |
| Finite-Lived Intangible Assets [Line Items] | ' | ' |
| Amortizing intangible assets, Gross Carrying Amount | 88,970 | 88,917 |
| Amortizing intangible assets, Accumulated Amortization | 79,635 | 77,217 |
| Contracts [Member] | ' | ' |
| Finite-Lived Intangible Assets [Line Items] | ' | ' |
| Amortizing intangible assets, Gross Carrying Amount | 7,127 | 7,127 |
| Amortizing intangible assets, Accumulated Amortization | 5,973 | 5,528 |
| Customer Bases [Member] | ' | ' |
| Finite-Lived Intangible Assets [Line Items] | ' | ' |
| Amortizing intangible assets, Gross Carrying Amount | 7,026 | 7,012 |
| Amortizing intangible assets, Accumulated Amortization | 3,126 | 2,918 |
| Trademarks And Trade Names [Member] | ' | ' |
| Finite-Lived Intangible Assets [Line Items] | ' | ' |
| Amortizing intangible assets, Gross Carrying Amount | 1,600 | 1,591 |
| Amortizing intangible assets, Accumulated Amortization | $690 | $610 |
Intangibles_Net_of_Amortizatio4
| Intangibles (Net of Amortization) and Goodwill (Schedule Of Amortization Expense And Estimated Annual Amortization Expense Related To Intangible Assets) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Goodwill and Intangible Assets Disclosure [Abstract] | ' | ' | ' | ' |
| Amortization expense | $1,576 | $1,864 | $3,151 | $3,728 |
| 2014 | 3,012 | ' | 3,012 | ' |
| 2015 | 5,790 | ' | 5,790 | ' |
| 2016 | 1,910 | ' | 1,910 | ' |
| 2017 | 746 | ' | 746 | ' |
| 2018 | 715 | ' | 715 | ' |
| 2019 | $688 | ' | $688 | ' |
Longterm_Debt_Narrative_Detail
| Long-term Debt (Narrative) (Details) (USD $) | 6 Months Ended | 12 Months Ended |
| Jun. 30, 2014 | Dec. 31, 2013 | |
| Senior Notes [Member] | ' | ' |
| Debt Instrument [Line Items] | ' | ' |
| Principal amount of debt | 350,000,000 | ' |
| Revolving Credit Facility [Member] | ' | ' |
| Debt Instrument [Line Items] | ' | ' |
| Average interest rate during the period | 3.80% | 2.20% |
Longterm_Debt_Schedule_Of_Long
| Long-term Debt (Schedule Of Long-Term Debt) (Details) (USD $) | 6 Months Ended | |
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013 |
| Debt Instrument [Line Items] | ' | ' |
| Outstanding borrowings | $353,497 | $349,467 |
| Revolving Credit Facility [Member] | ' | ' |
| Debt Instrument [Line Items] | ' | ' |
| Outstanding borrowings | 4,000 | 0 |
| Senior Notes [Member] | ' | ' |
| Debt Instrument [Line Items] | ' | ' |
| Outstanding borrowings | $349,497 | $349,467 |
| Senior notes, interest rate | 4.10% | ' |
| Debt instrument, maturity date | '2022 | ' |
Longterm_Debt_Schedule_Of_Unus
| Long-term Debt (Schedule Of Unused Portion Of Revolving Credit Facility) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| Debt Instrument [Line Items] | ' | ' |
| Outstanding borrowings | $353,497,000 | $349,467,000 |
| Revolving Credit Facility [Member] | ' | ' |
| Debt Instrument [Line Items] | ' | ' |
| Maximum borrowing capacity under the revolving credit facility | 650,000,000 | 650,000,000 |
| Outstanding borrowings | 4,000,000 | 0 |
| Outstanding letters of credit | 3,100,000 | 3,100,000 |
| Unused portion of revolving credit facility | $642,900,000 | $646,900,000 |
Contractual_Commitments_and_Co1
| Contractual Commitments and Contingencies (Environmental) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| In Millions, unless otherwise specified | ||
| Site Contingency [Line Items] | ' | ' |
| Accruals for environmental remediation, dismantling, and decontamination | $17 | $18 |
| Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member] | ' | ' |
| Site Contingency [Line Items] | ' | ' |
| Accruals for environmental remediation, dismantling, and decontamination | 11 | 11 |
| Accruals for environmental remediation, dismantling, and decontamination, undiscounted | 15 | 16 |
| Former TEL Plant Site, Louisiana [Member] | ' | ' |
| Site Contingency [Line Items] | ' | ' |
| Accrual for remediation of groundwater and soil | 5 | 5 |
| Houston, Texas Plant Site [Member] | ' | ' |
| Site Contingency [Line Items] | ' | ' |
| Accrual for remediation of groundwater and soil | $6 | $6 |
| Minimum [Member] | Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member] | ' | ' |
| Site Contingency [Line Items] | ' | ' |
| Discount rate | 3.00% | 3.00% |
| Maximum [Member] | Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member] | ' | ' |
| Site Contingency [Line Items] | ' | ' |
| Discount rate | 9.00% | 9.00% |
Contractual_Commitments_and_Co2
| Contractual Commitments and Contingencies (Guarantees) (Details) (USD $) | Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 |
| Minimum [Member] | Maximum [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Letters of Credit [Member] | ||
| Revolving Credit Facility [Member] | ||||||
| Lettters Of Credit And Guarantees [Line Items] | ' | ' | ' | ' | ' | ' |
| Outstanding guarantees | $6,000,000 | ' | ' | ' | ' | ' |
| Maximum borrowing capacity under the revolving credit facility | ' | ' | ' | 650,000,000 | 650,000,000 | 100,000,000 |
| Maximum potential amount of future payments under all other guarantees not secured by letters of credit | $17,000,000 | ' | ' | ' | ' | ' |
| Letters of credit and certain guarantees, expiration date | ' | '2014 | '2015 | ' | ' | ' |
Derivatives_and_Hedging_Activi3
| Derivatives and Hedging Activities (Narrative) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| Derivative Instruments, Gain (Loss) [Line Items] | ' | ' |
| Termination value of obligations | $23,000,000 | ' |
| Goldman Sachs [Member] | ' | ' |
| Derivative Instruments, Gain (Loss) [Line Items] | ' | ' |
| Cash collateral deposit | 27,770,000 | 25,839,000 |
| Interest Rate Swap [Member] | Goldman Sachs [Member] | ' | ' |
| Derivative Instruments, Gain (Loss) [Line Items] | ' | ' |
| Notional amount | 97,000,000 | ' |
| Rate of fixed-rate payments for interest rate swap | 5.31% | ' |
| Cash collateral deposit | $27,770,000 | $25,839,000 |
Derivatives_and_Hedging_Activi4
| Derivatives and Hedging Activities (Fair Value Of Derivative Instruments) (Details) (Goldman Sachs [Member], Interest Rate Swap [Member], Accrued Expenses And Other Noncurrent Liabilities [Member], USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| In Thousands, unless otherwise specified | ||
| Goldman Sachs [Member] | Interest Rate Swap [Member] | Accrued Expenses And Other Noncurrent Liabilities [Member] | ' | ' |
| Derivative Instruments, Gain (Loss) [Line Items] | ' | ' |
| Fair value of interest rate swap liability derivatives, not designated as hedging instruments | $23,229 | $21,211 |
Derivatives_and_Hedging_Activi5
| Derivatives and Hedging Activities (Effect Of Derivative Instruments On The Consolidated Statements Of Income Non-Designated Derivatives)(Details) (USD $) | 3 Months Ended | 6 Months Ended | ||||||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ' | ' | ' | ' | ||||
| Amount of Gain (Loss) Recognized in Income on Derivatives | ($2,270) | [1] | $5,098 | [1] | ($4,503) | [1] | $5,775 | [1] |
| Goldman Sachs [Member] | Interest Rate Swap [Member] | Other (Expense) Income, Net [Member] | ' | ' | ' | ' | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ' | ' | ' | ' | ||||
| Amount of Gain (Loss) Recognized in Income on Derivatives | ($2,270) | $5,097 | ($4,503) | $5,775 | ||||
| [1] | The gain (loss) 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. | |||||||
Other_Comprehensive_Income_Los2
| Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Schedule of Components of Accumulated Other Comprehensive Loss) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] | ' | ' | ' | ' |
| Pension Plans and Other Postretirement Benefits, Beginning Balance | ' | ' | ($44,493) | ($96,139) |
| Derivative Instruments, Beginning Balance | ' | ' | 0 | -4,173 |
| Foreign Currency Translation Adjustments, Beginning Balance | ' | ' | -15,593 | -10,377 |
| Accumulated Other Comprehensive (Loss) Income, Beginning Balance | ' | ' | -60,086 | -110,689 |
| Other comprehensive income (loss) before reclassifications, Pension Plans and Other Postretirement Benefits | ' | ' | -90 | 285 |
| Other comprehensive income (loss) before reclassifications, Derivative Instruments | ' | ' | 0 | 0 |
| Other comprehensive income (loss) before reclassifications, Foreign Currency Translation Adjustments | 8,535 | -4,130 | 9,560 | -22,410 |
| Other comprehensive income (loss) before reclassifications, Accumulated Other Comprehensive (Loss) Income | ' | ' | 9,470 | -22,125 |
| Amounts reclassified from accumulated other comprehensive loss, Pension Plans and Other Postretirement Benefits | 1,103 | 1,752 | 1,809 | 3,127 |
| Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments | 0 | 1,479 | 0 | 1,692 |
| Amounts reclassified from accumulated other comprehensive loss, Foreign Currency Translation Adjustments | ' | ' | 0 | 0 |
| Total reclassifications for the period | 1,103 | 3,231 | 1,809 | 4,819 |
| Total pension plans and other postretirement benefits | 1,013 | 2,037 | 1,719 | 3,412 |
| Other comprehensive income (loss), Derivative Instruments | ' | ' | 0 | 1,692 |
| Other comprehensive income (loss), Foreign Currency Translation Adjustments | ' | ' | 9,560 | -22,410 |
| Other comprehensive income (loss) | 9,548 | -614 | 11,279 | -17,306 |
| Pension Plans and Other Postretirement Benefits, Ending Balance | -42,774 | -92,727 | -42,774 | -92,727 |
| Derivative Instruments, Ending Balance | 0 | -2,481 | 0 | -2,481 |
| Foreign Currency Translation Adjustments, Ending Balance | -6,033 | -32,787 | -6,033 | -32,787 |
| Accumulated Other Comprehensive (Loss) Income, Ending Balance | ($48,807) | ($127,995) | ($48,807) | ($127,995) |
Other_Comprehensive_Income_Los3
| Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Schedule of Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Loss) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||||||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | ||||
| Pension plans and other postretirement benefits: | ' | ' | ' | ' | ||||
| Amortization of prior service (credit) cost | ($3) | [1] | $3 | [1] | ($6) | [1] | $5 | [1] |
| Amortization of actuarial net loss | 705 | [1] | 1,362 | [1] | 1,412 | [1] | 2,725 | [1] |
| Settlements and curtailments | 399 | [1] | 378 | [1] | 399 | [1] | 378 | [1] |
| Amortization of transition obligation | 2 | [1] | 9 | [1] | 4 | [1] | 19 | [1] |
| Total pension plans and other postretirement benefits | 1,103 | 1,752 | 1,809 | 3,127 | ||||
| Derivative instruments: | ' | ' | ' | ' | ||||
| Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments | 0 | 1,479 | 0 | 1,692 | ||||
| Total reclassifications for the period | 1,103 | 3,231 | 1,809 | 4,819 | ||||
| Amortization of interest rate swap, income tax expense | ' | 942 | ' | 1,077 | ||||
| (Loss) income from operations of discontinued business, net of tax [Member] | Interest Rate Swap [Member] | Mortgage Loan Interest Rate Swap [Member] | ' | ' | ' | ' | ||||
| Derivative instruments: | ' | ' | ' | ' | ||||
| Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments | 0 | 1,466 | [2] | 0 | 1,666 | [2] | ||
| Amortization of interest rate swap, income tax expense | ' | 934 | ' | 1,100 | ||||
| (Loss) income from operations of discontinued business, net of tax [Member] | Interest Rate Swap [Member] | Construction Loan Interest Rate Swap [Member] | ' | ' | ' | ' | ||||
| Derivative instruments: | ' | ' | ' | ' | ||||
| Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments | 0 | 13 | [2] | 0 | 26 | [2] | ||
| Amortization of interest rate swap, income tax expense | ' | $8 | ' | $16 | ||||
| [1] | (a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost (income). See Note 4 in this Form 10-Q and Note 18 in our 2013 Annual Report for further information. | |||||||
| [2] | (b) Amounts relate to the Foundry Park I mortgage loan interest rate swap and the construction loan interest rate swap. Amounts are presented net of income tax expense of $934 thousand for the mortgage loan interest rate swap and $8 thousand for the construction loan interest rate swap for the second quarter ended June 30, 2013 and $1.1 million for the mortgage loan interest rates swap and $16 thousand for the construction loan interest rate swap for the six months ended June 30, 2013. Due to the sale of the real estate assets of Foundry Park I in July 2013, the amounts recorded in accumulated other comprehensive loss for both interest rate swaps were completely recognized in the Consolidated Statements of Income in 2013. | |||||||
Fair_Value_Measurements_Assets
| Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2012 |
| In Thousands, unless otherwise specified | ||||
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash and cash equivalents, Carrying Amount in Consolidated Balance Sheets | $113,644 | $238,703 | $73,545 | $89,129 |
| Goldman Sachs [Member] | ' | ' | ' | ' |
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash deposit for collateralized interest rate swap, Carrying Amount in Consolidated Balance Sheets | 27,770 | 25,839 | ' | ' |
| Carrying Amount in Consolidated Balance Sheets [Member] | ' | ' | ' | ' |
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash and cash equivalents, Carrying Amount in Consolidated Balance Sheets | 113,644 | 238,703 | ' | ' |
| Interest rate swap liability, Carrying Amount in Consolidated Balance Sheets | 23,229 | 21,211 | ' | ' |
| Fair Value [Member] | ' | ' | ' | ' |
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash and cash equivalents, Fair Value | 113,644 | 238,703 | ' | ' |
| Interest rate swap liability, Fair Value | 23,229 | 21,211 | ' | ' |
| Fair Value [Member] | Goldman Sachs [Member] | ' | ' | ' | ' |
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash deposit for collateralized interest rate swap, Fair Value | 27,770 | 25,839 | ' | ' |
| Fair Value, Level 1 [Member] | ' | ' | ' | ' |
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash and cash equivalents, Fair Value | 113,644 | 238,703 | ' | ' |
| 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 | 27,770 | 25,839 | ' | ' |
| Fair Value, Level 2 [Member] | ' | ' | ' | ' |
| Fair Value Measurements [Line Items] | ' | ' | ' | ' |
| Cash and cash equivalents, Fair Value | 0 | 0 | ' | ' |
| Interest rate swap liability, Fair Value | 23,229 | 21,211 | ' | ' |
| 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 | ' | ' |
Fair_Value_Measurements_Estima
| Fair Value Measurements (Estimated Fair Value Of Long-Term Debt) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
| In Thousands, unless otherwise specified | ||
| Fair Value Disclosures [Abstract] | ' | ' |
| Long-term debt, Carrying Amount | $353,497 | $349,467 |
| Long-term debt, Fair Value | $375,319 | $345,283 |
Consolidating_Financial_Inform2
| Consolidating Financial Information (Narrative) (Details) | Jun. 30, 2014 |
| 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% |
Consolidating_Financial_Inform3
| Consolidating Financial Information (Consolidating Statements of Income and Comprehensive Income) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 |
| Net sales | $620,438 | $583,779 | $1,196,860 | $1,143,529 |
| Cost of goods sold | 439,692 | 414,351 | 854,184 | 805,694 |
| Gross profit | 180,746 | 169,428 | 342,676 | 337,835 |
| Selling, general, and administrative expenses | 40,913 | 39,921 | 80,461 | 80,862 |
| Research, development, and testing expenses | 35,367 | 36,429 | 67,574 | 67,450 |
| Operating (loss) profit | 104,466 | 93,078 | 194,641 | 189,523 |
| Interest and financing expenses, net | 4,346 | 4,573 | 8,510 | 9,355 |
| Other (expense) income, net | -2,203 | 5,374 | -4,419 | 6,121 |
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | 97,917 | 93,879 | 181,712 | 186,289 |
| Income tax (benefit) expense | 31,153 | 29,495 | 57,425 | 54,964 |
| Equity income of subsidiaries | 0 | 0 | 0 | 0 |
| Income from continuing operations | 66,764 | 64,384 | 124,287 | 131,325 |
| (Loss) income from operations of discontinued business, net of tax | 0 | -374 | 0 | 520 |
| Net income | 66,764 | 64,010 | 124,287 | 131,845 |
| Other comprehensive income (loss) | 9,548 | -614 | 11,279 | -17,306 |
| Comprehensive income | 76,312 | 63,396 | 135,566 | 114,539 |
| Parent Company [Member] | ' | ' | ' | ' |
| Net sales | 0 | 0 | 0 | 0 |
| Cost of goods sold | 0 | 0 | 0 | 0 |
| Gross profit | 0 | 0 | 0 | 0 |
| Selling, general, and administrative expenses | 1,609 | 1,779 | 3,338 | 3,464 |
| Research, development, and testing expenses | 0 | 0 | 0 | 0 |
| Operating (loss) profit | -1,609 | -1,779 | -3,338 | -3,464 |
| Interest and financing expenses, net | 4,535 | 4,749 | 8,883 | 9,559 |
| Other (expense) income, net | -2,260 | 5,118 | -4,492 | 5,819 |
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | -8,404 | -1,410 | -16,713 | -7,204 |
| Income tax (benefit) expense | -3,505 | -759 | -6,984 | -2,772 |
| Equity income of subsidiaries | 71,663 | 64,661 | 134,016 | 136,277 |
| Income from continuing operations | ' | 64,010 | ' | 131,845 |
| (Loss) income from operations of discontinued business, net of tax | ' | 0 | ' | 0 |
| Net income | 66,764 | 64,010 | 124,287 | 131,845 |
| Other comprehensive income (loss) | 9,548 | -614 | 11,279 | -17,306 |
| Comprehensive income | 76,312 | 63,396 | 135,566 | 114,539 |
| Guarantor Subsidiaries [Member] | ' | ' | ' | ' |
| Net sales | 239,631 | 233,955 | 447,905 | 454,020 |
| Cost of goods sold | 117,140 | 122,851 | 218,814 | 234,145 |
| Gross profit | 122,491 | 111,104 | 229,091 | 219,875 |
| Selling, general, and administrative expenses | 22,131 | 22,059 | 43,010 | 43,135 |
| Research, development, and testing expenses | 25,604 | 24,104 | 47,634 | 46,057 |
| Operating (loss) profit | 74,756 | 64,941 | 138,447 | 130,683 |
| Interest and financing expenses, net | -1,028 | -1,072 | -2,010 | -2,010 |
| Other (expense) income, net | -36 | -1 | -61 | -6 |
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | 75,748 | 66,012 | 140,396 | 132,687 |
| Income tax (benefit) expense | 27,556 | 16,898 | 49,207 | 41,796 |
| Equity income of subsidiaries | 0 | 0 | 0 | 0 |
| Income from continuing operations | ' | 49,114 | ' | 90,891 |
| (Loss) income from operations of discontinued business, net of tax | ' | 0 | ' | 0 |
| Net income | 48,192 | 49,114 | 91,189 | 90,891 |
| Other comprehensive income (loss) | 1,448 | 665 | 1,993 | -3,105 |
| Comprehensive income | 49,640 | 49,779 | 93,182 | 87,786 |
| Non-Guarantor Subsidiaries [Member] | ' | ' | ' | ' |
| Net sales | 380,807 | 349,824 | 748,955 | 689,509 |
| Cost of goods sold | 322,552 | 291,500 | 635,370 | 571,549 |
| Gross profit | 58,255 | 58,324 | 113,585 | 117,960 |
| Selling, general, and administrative expenses | 17,173 | 16,083 | 34,113 | 34,263 |
| Research, development, and testing expenses | 9,763 | 12,325 | 19,940 | 21,393 |
| Operating (loss) profit | 31,319 | 29,916 | 59,532 | 62,304 |
| Interest and financing expenses, net | 839 | 896 | 1,637 | 1,806 |
| Other (expense) income, net | 93 | 257 | 134 | 308 |
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | 30,573 | 29,277 | 58,029 | 60,806 |
| Income tax (benefit) expense | 7,102 | 13,356 | 15,202 | 15,940 |
| Equity income of subsidiaries | 0 | 0 | 0 | 0 |
| Income from continuing operations | ' | 15,921 | ' | 44,866 |
| (Loss) income from operations of discontinued business, net of tax | ' | -374 | ' | 520 |
| Net income | 23,471 | 15,547 | 42,827 | 45,386 |
| Other comprehensive income (loss) | 7,758 | -2,102 | 8,602 | -15,847 |
| Comprehensive income | 31,229 | 13,445 | 51,429 | 29,539 |
| Total Consolidating Adjustments [Member] | ' | ' | ' | ' |
| Net sales | 0 | 0 | 0 | 0 |
| Cost of goods sold | 0 | 0 | 0 | 0 |
| Gross profit | 0 | 0 | 0 | 0 |
| Selling, general, and administrative expenses | 0 | 0 | 0 | 0 |
| Research, development, and testing expenses | 0 | 0 | 0 | 0 |
| Operating (loss) profit | 0 | 0 | 0 | 0 |
| Interest and financing expenses, net | 0 | 0 | 0 | 0 |
| Other (expense) income, net | 0 | 0 | 0 | 0 |
| (Loss) income from continuing operations before income taxes and equity income of subsidiaries | 0 | 0 | 0 | 0 |
| Income tax (benefit) expense | 0 | 0 | 0 | 0 |
| Equity income of subsidiaries | -71,663 | -64,661 | -134,016 | -136,277 |
| Income from continuing operations | ' | -64,661 | ' | -136,277 |
| (Loss) income from operations of discontinued business, net of tax | ' | 0 | ' | 0 |
| Net income | -71,663 | -64,661 | -134,016 | -136,277 |
| Other comprehensive income (loss) | -9,206 | 1,437 | -10,595 | 18,952 |
| Comprehensive income | ($80,869) | ($63,224) | ($144,611) | ($117,325) |
Consolidating_Financial_Inform4
| Consolidating Financial Information (Consolidating Balance Sheets) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2012 |
| In Thousands, unless otherwise specified | ||||
| ASSETS | ' | ' | ' | ' |
| Cash and cash equivalents | $113,644 | $238,703 | $73,545 | $89,129 |
| Trade and other accounts receivable, net | 347,630 | 309,847 | ' | ' |
| Amounts due from affiliated companies | 0 | 0 | ' | ' |
| Inventories | 329,383 | 307,518 | ' | ' |
| Deferred income taxes | 6,346 | 8,267 | ' | ' |
| Prepaid expenses and other current assets | 36,029 | 32,984 | ' | ' |
| Total current assets | 833,032 | 897,319 | ' | ' |
| Amounts due from affiliated companies | 0 | 0 | ' | ' |
| Property, plant, and equipment, at cost | 1,003,519 | 985,196 | ' | ' |
| Less accumulated depreciation and amortization | 713,072 | 700,160 | ' | ' |
| Net property, plant, and equipment | 290,447 | 285,036 | ' | ' |
| Investment in consolidated subsidiaries | 0 | 0 | ' | ' |
| Prepaid pension cost | 61,882 | 55,087 | ' | ' |
| Deferred income taxes | 21,730 | 22,961 | ' | ' |
| Intangibles (net of amortization) and goodwill | 20,338 | 23,319 | ' | ' |
| Deferred charges and other assets | 44,921 | 43,552 | ' | ' |
| Total assets | 1,272,350 | 1,327,274 | ' | ' |
| LIABILITIES AND SHAREHOLDERS’ EQUITY | ' | ' | ' | ' |
| Accounts payable | 137,479 | 134,132 | ' | ' |
| Accrued expenses | 73,006 | 77,992 | ' | ' |
| Dividends payable | 12,578 | 12,996 | ' | ' |
| Amounts due to affiliated companies | 0 | 0 | ' | ' |
| Income taxes payable | 11,972 | 11,419 | ' | ' |
| Other current liabilities | 11,023 | 11,075 | ' | ' |
| Total current liabilities | 246,058 | 247,614 | ' | ' |
| Long-term debt | 353,497 | 349,467 | ' | ' |
| Amounts due to affiliated companies | 0 | 0 | ' | ' |
| Other noncurrent liabilities | 159,298 | 157,745 | ' | ' |
| Total liabilities | 758,853 | 754,826 | ' | ' |
| Shareholders’ equity: | ' | ' | ' | ' |
| Common stock and paid-in capital | 0 | 0 | ' | ' |
| Accumulated other comprehensive loss | -48,807 | -60,086 | -127,995 | -110,689 |
| Retained earnings | 562,304 | 632,534 | ' | ' |
| Total shareholders' equity | 513,497 | 572,448 | 466,445 | 402,205 |
| Total liabilities and shareholders’ equity | 1,272,350 | 1,327,274 | ' | ' |
| Parent Company [Member] | ' | ' | ' | ' |
| ASSETS | ' | ' | ' | ' |
| Cash and cash equivalents | 38 | 1,038 | 3 | 5,001 |
| Trade and other accounts receivable, net | 1,714 | 1,512 | ' | ' |
| Amounts due from affiliated companies | 88,743 | 0 | ' | ' |
| Inventories | 0 | 0 | ' | ' |
| Deferred income taxes | 2,590 | 2,600 | ' | ' |
| Prepaid expenses and other current assets | 12,721 | 13,055 | ' | ' |
| Total current assets | 105,806 | 18,205 | ' | ' |
| Amounts due from affiliated companies | 0 | 0 | ' | ' |
| 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 | 906,161 | 955,560 | ' | ' |
| Prepaid pension cost | 26,476 | 23,276 | ' | ' |
| Deferred income taxes | 20,756 | 20,999 | ' | ' |
| Intangibles (net of amortization) and goodwill | 0 | 0 | ' | ' |
| Deferred charges and other assets | 34,509 | 33,257 | ' | ' |
| Total assets | 1,093,708 | 1,051,297 | ' | ' |
| LIABILITIES AND SHAREHOLDERS’ EQUITY | ' | ' | ' | ' |
| Accounts payable | 6 | 6 | ' | ' |
| Accrued expenses | 11,972 | 10,788 | ' | ' |
| Dividends payable | 12,578 | 12,996 | ' | ' |
| Amounts due to affiliated companies | 117,104 | 23,183 | ' | ' |
| Income taxes payable | 0 | 0 | ' | ' |
| Other current liabilities | 0 | 0 | ' | ' |
| Total current liabilities | 141,660 | 46,973 | ' | ' |
| Long-term debt | 353,497 | 349,467 | ' | ' |
| Amounts due to affiliated companies | 0 | 0 | ' | ' |
| Other noncurrent liabilities | 85,054 | 82,409 | ' | ' |
| Total liabilities | 580,211 | 478,849 | ' | ' |
| Shareholders’ equity: | ' | ' | ' | ' |
| Common stock and paid-in capital | 0 | 0 | ' | ' |
| Accumulated other comprehensive loss | -48,807 | -60,086 | ' | ' |
| Retained earnings | 562,304 | 632,534 | ' | ' |
| Total shareholders' equity | 513,497 | 572,448 | ' | ' |
| Total liabilities and shareholders’ equity | 1,093,708 | 1,051,297 | ' | ' |
| Guarantor Subsidiaries [Member] | ' | ' | ' | ' |
| ASSETS | ' | ' | ' | ' |
| Cash and cash equivalents | 3,443 | 102,205 | 4,988 | 3,956 |
| Trade and other accounts receivable, net | 109,668 | 108,908 | ' | ' |
| Amounts due from affiliated companies | 238,071 | 139,710 | ' | ' |
| Inventories | 123,005 | 115,442 | ' | ' |
| Deferred income taxes | 3,313 | 4,919 | ' | ' |
| Prepaid expenses and other current assets | 20,496 | 17,886 | ' | ' |
| Total current assets | 497,996 | 489,070 | ' | ' |
| Amounts due from affiliated companies | 112,289 | 113,076 | ' | ' |
| Property, plant, and equipment, at cost | 701,212 | 692,024 | ' | ' |
| Less accumulated depreciation and amortization | 563,444 | 555,805 | ' | ' |
| Net property, plant, and equipment | 137,768 | 136,219 | ' | ' |
| Investment in consolidated subsidiaries | 0 | 0 | ' | ' |
| Prepaid pension cost | 17,320 | 16,092 | ' | ' |
| Deferred income taxes | 0 | 0 | ' | ' |
| Intangibles (net of amortization) and goodwill | 14,117 | 17,036 | ' | ' |
| Deferred charges and other assets | 9,129 | 9,014 | ' | ' |
| Total assets | 788,619 | 780,507 | ' | ' |
| LIABILITIES AND SHAREHOLDERS’ EQUITY | ' | ' | ' | ' |
| Accounts payable | 82,305 | 86,649 | ' | ' |
| Accrued expenses | 38,475 | 46,401 | ' | ' |
| Dividends payable | 0 | 0 | ' | ' |
| Amounts due to affiliated companies | 177,157 | 77,098 | ' | ' |
| Income taxes payable | 384 | 0 | ' | ' |
| Other current liabilities | 7,927 | 7,828 | ' | ' |
| Total current liabilities | 306,248 | 217,976 | ' | ' |
| Long-term debt | 0 | 0 | ' | ' |
| Amounts due to affiliated companies | 8,025 | 8,025 | ' | ' |
| Other noncurrent liabilities | 41,537 | 41,014 | ' | ' |
| Total liabilities | 355,810 | 267,015 | ' | ' |
| Shareholders’ equity: | ' | ' | ' | ' |
| Common stock and paid-in capital | 260,776 | 260,776 | ' | ' |
| Accumulated other comprehensive loss | -3,792 | -5,786 | ' | ' |
| Retained earnings | 175,825 | 258,502 | ' | ' |
| Total shareholders' equity | 432,809 | 513,492 | ' | ' |
| Total liabilities and shareholders’ equity | 788,619 | 780,507 | ' | ' |
| Non-Guarantor Subsidiaries [Member] | ' | ' | ' | ' |
| ASSETS | ' | ' | ' | ' |
| Cash and cash equivalents | 110,163 | 135,460 | 68,554 | 80,172 |
| Trade and other accounts receivable, net | 236,248 | 199,431 | ' | ' |
| Amounts due from affiliated companies | 89,755 | 77,098 | ' | ' |
| Inventories | 206,378 | 192,076 | ' | ' |
| Deferred income taxes | 443 | 748 | ' | ' |
| Prepaid expenses and other current assets | 2,812 | 2,043 | ' | ' |
| Total current assets | 645,799 | 606,856 | ' | ' |
| Amounts due from affiliated companies | 8,025 | 8,025 | ' | ' |
| Property, plant, and equipment, at cost | 302,307 | 293,172 | ' | ' |
| Less accumulated depreciation and amortization | 149,628 | 144,355 | ' | ' |
| Net property, plant, and equipment | 152,679 | 148,817 | ' | ' |
| Investment in consolidated subsidiaries | 0 | 0 | ' | ' |
| Prepaid pension cost | 18,086 | 15,719 | ' | ' |
| Deferred income taxes | 7,158 | 7,984 | ' | ' |
| Intangibles (net of amortization) and goodwill | 6,221 | 6,283 | ' | ' |
| Deferred charges and other assets | 1,283 | 1,281 | ' | ' |
| Total assets | 839,251 | 794,965 | ' | ' |
| LIABILITIES AND SHAREHOLDERS’ EQUITY | ' | ' | ' | ' |
| Accounts payable | 55,168 | 47,477 | ' | ' |
| Accrued expenses | 22,559 | 20,803 | ' | ' |
| Dividends payable | 0 | 0 | ' | ' |
| Amounts due to affiliated companies | 122,308 | 116,527 | ' | ' |
| Income taxes payable | 11,588 | 11,423 | ' | ' |
| Other current liabilities | 3,096 | 3,247 | ' | ' |
| Total current liabilities | 214,719 | 199,477 | ' | ' |
| Long-term debt | 0 | 0 | ' | ' |
| Amounts due to affiliated companies | 112,289 | 113,076 | ' | ' |
| Other noncurrent liabilities | 38,891 | 40,344 | ' | ' |
| Total liabilities | 365,899 | 352,897 | ' | ' |
| Shareholders’ equity: | ' | ' | ' | ' |
| Common stock and paid-in capital | 126,662 | 126,661 | ' | ' |
| Accumulated other comprehensive loss | -31,758 | -40,360 | ' | ' |
| Retained earnings | 378,448 | 355,767 | ' | ' |
| Total shareholders' equity | 473,352 | 442,068 | ' | ' |
| Total liabilities and shareholders’ equity | 839,251 | 794,965 | ' | ' |
| Total Consolidating Adjustments [Member] | ' | ' | ' | ' |
| ASSETS | ' | ' | ' | ' |
| Cash and cash equivalents | 0 | 0 | 0 | 0 |
| Trade and other accounts receivable, net | 0 | -4 | ' | ' |
| Amounts due from affiliated companies | -416,569 | -216,808 | ' | ' |
| Inventories | 0 | 0 | ' | ' |
| Deferred income taxes | 0 | 0 | ' | ' |
| Prepaid expenses and other current assets | 0 | 0 | ' | ' |
| Total current assets | -416,569 | -216,812 | ' | ' |
| Amounts due from affiliated companies | -120,314 | -121,101 | ' | ' |
| 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 | -906,161 | -955,560 | ' | ' |
| Prepaid pension cost | 0 | 0 | ' | ' |
| Deferred income taxes | -6,184 | -6,022 | ' | ' |
| Intangibles (net of amortization) and goodwill | 0 | 0 | ' | ' |
| Deferred charges and other assets | 0 | 0 | ' | ' |
| Total assets | -1,449,228 | -1,299,495 | ' | ' |
| LIABILITIES AND SHAREHOLDERS’ EQUITY | ' | ' | ' | ' |
| Accounts payable | 0 | 0 | ' | ' |
| Accrued expenses | 0 | 0 | ' | ' |
| Dividends payable | 0 | 0 | ' | ' |
| Amounts due to affiliated companies | -416,569 | -216,808 | ' | ' |
| Income taxes payable | 0 | -4 | ' | ' |
| Other current liabilities | 0 | 0 | ' | ' |
| Total current liabilities | -416,569 | -216,812 | ' | ' |
| Long-term debt | 0 | 0 | ' | ' |
| Amounts due to affiliated companies | -120,314 | -121,101 | ' | ' |
| Other noncurrent liabilities | -6,184 | -6,022 | ' | ' |
| Total liabilities | -543,067 | -343,935 | ' | ' |
| Shareholders’ equity: | ' | ' | ' | ' |
| Common stock and paid-in capital | -387,438 | -387,437 | ' | ' |
| Accumulated other comprehensive loss | 35,550 | 46,146 | ' | ' |
| Retained earnings | -554,273 | -614,269 | ' | ' |
| Total shareholders' equity | -906,161 | -955,560 | ' | ' |
| Total liabilities and shareholders’ equity | ($1,449,228) | ($1,299,495) | ' | ' |
Consolidating_Financial_Inform5
| Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Details) (USD $) | 6 Months Ended | |
| In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 |
| Cash provided from (used in) operating activities | $84,516 | $122,906 |
| Cash flows from investing activities: | ' | ' |
| Capital expenditures | -20,654 | -31,849 |
| Deposits for interest rate swap | -4,861 | -7,762 |
| Return of deposits for interest rate swap | 2,930 | 17,110 |
| Other, net | -2,485 | -2,464 |
| Cash provided from (used in) investing activities | -25,070 | -24,965 |
| Cash flows from financing activities: | ' | ' |
| Net borrowings (repayments) under revolving credit facility | 4,000 | -60,000 |
| Net (repayments) borrowings under lines of credit | -151 | 3,404 |
| Dividends paid | -28,155 | -23,980 |
| Debt issuance costs | 0 | -1,145 |
| Repurchases of common stock | -162,867 | -26,798 |
| Issuance of intercompany note payable, net | 0 | 0 |
| Repayment of intercompany note payable, net | 0 | 0 |
| Financing from affiliated companies | 0 | 0 |
| Cash provided from (used in) financing activities | -187,173 | -108,519 |
| Effect of foreign exchange on cash and cash equivalents | 2,668 | -5,006 |
| (Decrease) increase in cash and cash equivalents | -125,059 | -15,584 |
| Cash and cash equivalents at beginning of year | 238,703 | 89,129 |
| Cash and cash equivalents at end of period | 113,644 | 73,545 |
| Parent Company [Member] | ' | ' |
| Cash provided from (used in) operating activities | 190,441 | 94,404 |
| Cash flows from investing activities: | ' | ' |
| Capital expenditures | 0 | 0 |
| Deposits for interest rate swap | -4,861 | -7,762 |
| Return of deposits for interest rate swap | 2,930 | 17,110 |
| Other, net | -2,485 | -2,464 |
| Cash provided from (used in) investing activities | -4,416 | 6,884 |
| Cash flows from financing activities: | ' | ' |
| Net borrowings (repayments) under revolving credit facility | 4,000 | -60,000 |
| Net (repayments) borrowings under lines of credit | 0 | 0 |
| Dividends paid | -28,155 | -23,980 |
| Debt issuance costs | ' | -1,145 |
| Repurchases of common stock | -162,867 | -26,798 |
| Issuance of intercompany note payable, net | 0 | 0 |
| Repayment of intercompany note payable, net | 0 | 5,639 |
| Financing from affiliated companies | -3 | -2 |
| Cash provided from (used in) financing activities | -187,025 | -106,286 |
| Effect of foreign exchange on cash and cash equivalents | 0 | 0 |
| (Decrease) increase in cash and cash equivalents | -1,000 | -4,998 |
| Cash and cash equivalents at beginning of year | 1,038 | 5,001 |
| Cash and cash equivalents at end of period | 38 | 3 |
| Guarantor Subsidiaries [Member] | ' | ' |
| Cash provided from (used in) operating activities | 105,299 | -45,219 |
| Cash flows from investing activities: | ' | ' |
| Capital expenditures | -11,942 | -14,058 |
| Deposits for interest rate swap | 0 | 0 |
| Return of deposits for interest rate swap | 0 | 0 |
| Other, net | 0 | 0 |
| Cash provided from (used in) investing activities | -11,942 | -14,058 |
| Cash flows from financing activities: | ' | ' |
| Net borrowings (repayments) under revolving credit facility | 0 | 0 |
| Net (repayments) borrowings under lines of credit | 0 | 0 |
| Dividends paid | -194,007 | -86,585 |
| Debt issuance costs | ' | 0 |
| Repurchases of common stock | 0 | 0 |
| Issuance of intercompany note payable, net | -10,748 | -4,207 |
| Repayment of intercompany note payable, net | 14,329 | 13,402 |
| Financing from affiliated companies | -1,693 | 137,699 |
| Cash provided from (used in) financing activities | -192,119 | 60,309 |
| Effect of foreign exchange on cash and cash equivalents | 0 | 0 |
| (Decrease) increase in cash and cash equivalents | -98,762 | 1,032 |
| Cash and cash equivalents at beginning of year | 102,205 | 3,956 |
| Cash and cash equivalents at end of period | 3,443 | 4,988 |
| Non-Guarantor Subsidiaries [Member] | ' | ' |
| Cash provided from (used in) operating activities | 4,626 | 32,525 |
| Cash flows from investing activities: | ' | ' |
| Capital expenditures | -8,712 | -17,791 |
| Deposits for interest rate swap | 0 | 0 |
| Return of deposits for interest rate swap | 0 | 0 |
| Other, net | 0 | 0 |
| Cash provided from (used in) investing activities | -8,712 | -17,791 |
| Cash flows from financing activities: | ' | ' |
| Net borrowings (repayments) under revolving credit facility | 0 | 0 |
| Net (repayments) borrowings under lines of credit | -151 | 3,404 |
| Dividends paid | -20,147 | -9,916 |
| Debt issuance costs | ' | 0 |
| Repurchases of common stock | 0 | 0 |
| Issuance of intercompany note payable, net | 10,748 | 4,207 |
| Repayment of intercompany note payable, net | -14,329 | -19,041 |
| Financing from affiliated companies | 0 | 0 |
| Cash provided from (used in) financing activities | -23,879 | -21,346 |
| Effect of foreign exchange on cash and cash equivalents | 2,668 | -5,006 |
| (Decrease) increase in cash and cash equivalents | -25,297 | -11,618 |
| Cash and cash equivalents at beginning of year | 135,460 | 80,172 |
| Cash and cash equivalents at end of period | 110,163 | 68,554 |
| Total Consolidating Adjustments [Member] | ' | ' |
| Cash provided from (used in) operating activities | -215,850 | 41,196 |
| 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 |
| Other, net | 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 |
| Net (repayments) borrowings under lines of credit | 0 | 0 |
| Dividends paid | 214,154 | 96,501 |
| Debt issuance costs | ' | 0 |
| Repurchases of common stock | 0 | 0 |
| Issuance of intercompany note payable, net | 0 | 0 |
| Repayment of intercompany note payable, net | 0 | 0 |
| Financing from affiliated companies | 1,696 | -137,697 |
| Cash provided from (used in) financing activities | 215,850 | -41,196 |
| 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 |