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Goodwill and Other Intangibles - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets | $ 25,079 | $ 19,039 | $ 16,900
Minimum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 5 years |  |
Maximum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 25 years |  |
Customer lists and relationships |  |  |
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets | $ 21,288 | 18,034 |
Customer lists and relationships | Minimum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 13 years |  |
Customer lists and relationships | Maximum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 25 years |  |
Trademarks and Trade Names |  |  |
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets | $ 0 | 0 |
Patents and technology |  |  |
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets | $ 1,412 | 574 |
Patents and technology | Minimum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 17 years |  |
Patents and technology | Maximum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 20 years |  |
Other |  |  |
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets | $ 2,379 | 431 |
Other | Minimum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 5 years |  |
Other | Maximum |  |  |
Other Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, useful life | 25 years |  |
Amortized using the pattern of economic benefit method |  |  |
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets | $ 17,700 | 15,900 |
Discontinued operations |  |  |
Other Intangible Assets [Line Items] |  |  |
Amortization of other intangible assets |  | $ 26,300 | $ 60,400

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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