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Business Combinations - Identifiable Intangible Assets (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($)
Aesynt |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 123,700
Aesynt | Customer relationships |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 58,200
Aesynt | Customer relationships | Minimum |
Finite-Lived Intangible Assets [Line Items] |
Weighted average useful life (in years) | 14 years
Aesynt | Customer relationships | Maximum |
Finite-Lived Intangible Assets [Line Items] |
Weighted average useful life (in years) | 16 years
Aesynt | Developed technology |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 38,800
Weighted average useful life (in years) | 8 years
Aesynt | Backlog |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 20,200
Aesynt | Backlog | Minimum |
Finite-Lived Intangible Assets [Line Items] |
Weighted average useful life (in years) | 1 year
Aesynt | Backlog | Maximum |
Finite-Lived Intangible Assets [Line Items] |
Weighted average useful life (in years) | 3 years
Aesynt | In-process research and development |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 3,900
Aesynt | Non-compete |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 1,800
Weighted average useful life (in years) | 3 years
Aesynt | Trade name |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 800
Weighted average useful life (in years) | 1 year
Ateb |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 12,500
Ateb | Customer relationships |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 8,900
Weighted average useful life (in years) | 12 years
Ateb | Developed technology |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 3,400
Weighted average useful life (in years) | 5 years
Ateb | Non-compete |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 100
Weighted average useful life (in years) | 1 year
Ateb | Trade name |
Finite-Lived Intangible Assets [Line Items] |
Total purchased intangible assets | $ 100
Weighted average useful life (in years) | 1 year

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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