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Acquisition-related Intangible Assets, Net (Tables)

3 Months Ended

Apr. 30, 2018

Acquired Finite-Lived Intangible Assets [Line Items]

Schedule of Acquired Assets

Acquisition-related intangible assets, net consisted of the following (in thousands):

	April 30, 2018				January 31, 2018
Acquired developed technology	$	69,700			$	69,700
Customer relationship assets	1,000				1,000
	70,700				70,700
Less accumulated amortization	(41,554		)		(36,466		)
Acquisition-related intangible assets, net	$	29,146			$	34,234

Developed technology and customer relationships

Acquired Finite-Lived Intangible Assets [Line Items]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

As of April 30, 2018, our future estimated amortization expense related to acquired developed technology and customer relationship assets is as follows (in thousands):

Fiscal Period:
2019	$	14,998
2020	11,481
2021	1,517
2022	1,150
Total	$	29,146

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Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company.

+ 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)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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