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Business Acquisitions - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended
--- | --- | --- | ---
Dec. 08, 2016 | Jan. 05, 2016 | Mar. 31, 2017
Aesynt Holding, L.P., Aesynt, Ltd. |  |  |
Identifiable Intangible Assets |  |  |
Total purchased intangible assets |  | $ 123,700 |
Aesynt Holding, L.P., Aesynt, Ltd. | In-process research and development (IPR&D) |  |  |
Identifiable Intangible Assets |  |  |
Indefinite-lived Intangible Assets Acquired |  | 3,900 |
Aesynt Holding, L.P., Aesynt, Ltd. | Customer relationships |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased |  | 58,200 |
Aesynt Holding, L.P., Aesynt, Ltd. | Customer relationships | Minimum |  |  |
Identifiable Intangible Assets |  |  |
Weighted average useful life (in years) |  |  | 14 years
Aesynt Holding, L.P., Aesynt, Ltd. | Customer relationships | Maximum |  |  |
Identifiable Intangible Assets |  |  |
Weighted average useful life (in years) |  |  | 16 years
Aesynt Holding, L.P., Aesynt, Ltd. | Developed technology |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased |  | 38,800 |
Weighted average useful life (in years) |  |  | 8 years
Aesynt Holding, L.P., Aesynt, Ltd. | Backlog |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased |  | 20,200 |
Aesynt Holding, L.P., Aesynt, Ltd. | Backlog | Minimum |  |  |
Identifiable Intangible Assets |  |  |
Weighted average useful life (in years) |  |  | 1 year
Aesynt Holding, L.P., Aesynt, Ltd. | Backlog | Maximum |  |  |
Identifiable Intangible Assets |  |  |
Weighted average useful life (in years) |  |  | 3 years
Aesynt Holding, L.P., Aesynt, Ltd. | Non-compete |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased |  | 1,800 |
Weighted average useful life (in years) |  |  | 3 years
Aesynt Holding, L.P., Aesynt, Ltd. | Trade names |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased |  | $ 800 |
Weighted average useful life (in years) |  |  | 1 year
Ateb |  |  |
Identifiable Intangible Assets |  |  |
Total purchased intangible assets | $ 12,500 |  |
Ateb | Customer relationships |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased | 8,900 |  |
Weighted average useful life (in years) |  |  | 12 years
Ateb | Developed technology |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased | 3,400 |  |
Weighted average useful life (in years) |  |  | 5 years
Ateb | Non-compete |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased | 100 |  |
Weighted average useful life (in years) |  |  | 1 year
Ateb | Trade names |  |  |
Identifiable Intangible Assets |  |  |
Fair value of identifiable intangible assets purchased | $ 100 |  |
Weighted average useful life (in years) |  |  | 1 year

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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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