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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Currently payable [Abstract] |  |  |  |  |  |
Federal | [1] |  |  | $ 15,513 | $ 12,145 | $ 20,794
State |  |  |  | 642 | 2,631 | 2,936
Foreign |  |  |  | 25,254 | 19,168 | 23,873
Current income tax (expense), total |  |  |  | 41,409 | 33,944 | 47,603
Deferred (benefit) expense [Abstract] |  |  |  |  |  |
Federal |  |  |  | 18,458 | 7,630 | 5,779
State |  |  |  | 215 | 1,656 | (772)
Foreign |  |  |  | (1,259) | 1,142 | (10,461)
Deferred income tax (expense), total |  |  |  | 17,414 | 10,428 | (5,454)
Income taxes |  |  |  | 58,823 | 44,372 | $ 42,149
Deferred tax assets [Abstract] |  |  |  |  |  |
Benefit plans |  | $ 8,440 |  | 8,440 | 11,040 |
Liabilities and reserves |  | 11,141 |  | 11,141 | 15,733 |
Operating loss and credit carryovers |  | 40,164 |  | 40,164 | 49,778 |
Other |  | 1,007 |  | 1,007 | 3,181 |
Gross deferred tax assets |  | 60,752 |  | 60,752 | 79,732 |
Valuation allowance |  | (38,366) |  | (38,366) | (35,426) |
Deferred tax assets |  | 22,386 |  | 22,386 | 44,306 |
Deferred tax liabilities [Abstract] |  |  |  |  |  |
Property, plant and equipment |  | (12,458) |  | (12,458) | (1,186) |
Other assets |  | 0 |  | 0 | (353) |
Goodwill |  | (20,345) |  | (20,345) | (27,863) |
Other |  | (422) |  | (422) | (12,434) |
Deferred tax liabilities |  | (33,225) |  | (33,225) | (41,836) |
Net deferred tax liabilities |  | (10,839) |  | (10,839) |  |
Net deferred tax assets |  |  |  |  | $ 2,470 |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Transition tax for accumulated foreign earnings, Income tax expense |  |  |  | 7,400 |  |
Transition tax for accumulated foreign earnings, Liability, Noncurrent |  | 5,100 |  | $ 5,100 |  |
Provisional income tax expense |  | 18,400 |  |  |  |
Effective tax rate reconciliation [Abstract] |  |  |  |  |  |
Taxes at statutory rate |  |  |  | 35.00% | 35.00% | 35.00%
State income taxes, net of federal income tax benefit |  |  |  | 0.30% | 1.40% | 1.70%
Tax credits |  |  |  | (1.10%) | (1.80%) | (0.70%)
Taxes on foreign earnings |  |  |  | 0.20% | (4.40%) | (0.80%)
Resolution of prior years' tax matters |  |  |  | 0.10% | 0.00% | (0.30%)
U.S. manufacturing deduction |  |  |  | (1.40%) | (2.00%) | (1.90%)
Valuation allowance adjustments |  |  |  | 0.00% | (0.30%) | (5.00%)
2017 Tax Legislation |  |  |  | 12.40% | 0.00% | 0.00%
Loss on foreign branch remittances |  |  |  | (5.20%) | 0.00% | 0.00%
Other, net |  |  |  | (0.70%) | (1.40%) | 0.20%
Effective tax rate |  |  |  | 39.60% | 26.50% | 28.20%
Earnings from continuing operations before income taxes [Abstract] |  |  |  |  |  |
United States |  |  |  | $ 88,479 | $ 96,963 | $ 87,749
Foreign |  |  |  | 59,944 | 70,322 | 61,647
Total |  |  |  | 148,423 | 167,285 | 149,396
Reconciliation of change in liability for unrecognized tax benefits [Roll Forward] |  |  |  |  |  |
Balance at beginning of year |  |  | $ 6,276 | 4,947 | 4,963 |
Increases for tax positions taken in the current year |  |  |  | 871 | 570 |
Increases for tax positions taken in prior years |  |  |  | 553 | 1,204 |
Decreases related to settlements with tax authorities |  |  |  | (76) | (1,172) |
Decreases as a result of lapse of the applicable statutes of limitations |  |  |  | (607) | (426) |
Foreign currency exchange rate changes |  |  |  | 588 | (192) |
Balance at the end of year |  | 6,276 |  | 6,276 | 4,947 | $ 4,963
Unrecognized tax benefits that would impact the effective tax rate, if recognized |  | 4,500 |  | 4,500 |  |
Income tax interest and penalties accrued |  | 500 |  | 500 | $ 400 |
Expected decrease in liability for unrecognized tax benefits in the next fiscal year |  | 1,600 |  | 1,600 |  |
Unrecognized tax benefits that would impact the effective tax rate in the next fiscal year |  | 800 |  | 800 |  |
Plan [Member] |  |  |  |  |  |
Effective tax rate reconciliation [Abstract] |  |  |  |  |  |
Taxes at statutory rate |  |  | 21.00% |  |  |
Foreign [Member] |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Operating loss carryovers |  | 116,800 |  | 116,800 |  |
Operating loss carryovers, subject to expiration |  | 25,000 |  | 25,000 |  |
Operating loss carryovers, not subject to expiration |  | 91,800 |  | 91,800 |  |
State [Member] |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Operating loss carryovers |  | $ 138,700 |  | $ 138,700 |  |
[1] | This amount includes $7.4 million related to the one-time transition tax on earnings of foreign subsidiaries enacted by the 2017 Tax Legislation (See discussion below). Approximately $5.1 million of this amount is reported in Other liabilities on the Consolidated Balance Sheet at December 31, 2017.

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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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