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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Thousands |  |  |  |  |  | 3 Months Ended | 7 Months Ended | 8 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 30, 2016 | Oct. 10, 2016 | Sep. 09, 2016 | Jul. 29, 2016 | Jul. 31, 2015 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Jul. 29, 2016 | Jul. 31, 2015 | Sep. 09, 2016 | Oct. 10, 2016 | Dec. 31, 2016 | Dec. 30, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of businesses, net of cash sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 39,064 |  | $ 27,677 | $ 0
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 97,403 |  | 109,538 | 113,054
Revenues |  |  |  |  |  | $ 530,419 | $ 530,356 | $ 549,696 | $ 502,572 | $ 499,798 | $ 503,791 | $ 514,881 | $ 502,198 |  |  |  |  | 2,113,043 |  | $ 2,020,668 | $ 2,147,767
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Hydra-Stop |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of businesses, net of cash sold |  |  |  | $ 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain (loss) on the sale |  |  |  | 5,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional proceeds from disposition of business |  |  |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,800 |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,500 |  |  |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Melles Griot KK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of businesses, net of cash sold |  |  | $ 17,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain (loss) on the sale |  |  | $ (7,900) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,400) |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,100 |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | IETG and 40Seven |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of businesses, net of cash sold |  | $ 2,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain (loss) on the sale |  | $ (4,200) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,300 |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | CVI Korea |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of businesses, net of cash sold | $ 3,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain (loss) on the sale | $ (16,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9,100) |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,700 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Ismatec Product Line |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of businesses, net of cash sold |  |  |  |  | $ 27,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain (loss) on the sale |  |  |  |  | $ 18,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,800 |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,300 |  |  |  |  |  |

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