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Intangible Assets (Tables)

9 Months Ended

Jan. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

The following table presents a summary of intangible assets as of January 31, 2016 and April 30, 2015 (in thousands):

		January 31, 2016															April 30, 2015
		Gross															Gross
		Carrying					Accumulated					Net Carrying					Carrying					Accumulated					Net Carrying
		Amount					Amortization					Amount					Amount					Amortization					Amount
Customer relationships		$		27,860			$		(5,198	)		$		22,662			$		28,260			$		(1,633	)		$		26,627
Developed technology				16,430					(2,369	)				14,061					16,630					(1,014	)				15,616
Patents, trademarks, and trade names				36,095					(8,171	)				27,924					36,380					(5,303	)				31,077
				80,385					(15,738	)				64,647					81,270					(7,950	)				73,320
Patents in progress				367					—					367					448					—					448
		$		80,752			$		(15,738	)		$		65,014			$		81,718			$		(7,950	)		$		73,768

Schedule of Future Expected Amortization Expense

Estimated amortization expense of intangible assets for the remainder of fiscal 2016 and succeeding fiscal years is as follows:

Fiscal			Amount
2016		$		2,819
2017				10,501
2018				9,755
2019				8,568
2020				7,420
Thereafter				25,584
Total		$		64,647

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- References

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ 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=26713463&loc=d3e16323-109275

Reference 2: 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=26713463&loc=d3e16265-109275

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- Definition

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=26713463&loc=d3e16323-109275

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