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.

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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.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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-Publisher FASB
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Business Combinations - Additional Information (Details) - USD ($) $ in Thousands	May 19, 2016	Dec. 31, 2017	Sep. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 806,332	$ 804,414
Applications
Business Acquisition [Line Items]
Goodwill		$ 590,065	$ 588,288
QuadMetrics
Business Acquisition [Line Items]
Common stock acquired (percent)	100.00%
Cash	$ 5,700
Intangible assets	$ 2,000
Weighted average useful life	4 years
QuadMetrics \| Applications
Business Acquisition [Line Items]
Goodwill	$ 3,900