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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Services |  |
Segment Reporting Information [Line Items] |  |
Intangible asset amortization expense | $ 2.5 | $ 2.7

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- Definition Amount of expense for allocation of cost of intangible asset over its useful life directly used in production of good and rendering of service. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- Details
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