v3.7.0.1

Geographic Information Summary of Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Revenue from External Customer [Line Items]
Revenues	$ 479,861	$ 347,677	[1]
United States
Revenue from External Customer [Line Items]
Revenues	383,171	286,349
Other countries
Revenue from External Customer [Line Items]
Revenues	$ 96,690	$ 61,328
[1] See Note 2 for a summary of adjustments.

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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

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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