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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
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Business Acquisitions - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands			6 Months Ended
	Dec. 08, 2016	Jan. 05, 2016	Jun. 30, 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
Fair value of indefinite-lived identifiable intangible assets purchased		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