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Intangible Assets (Tables)

3 Months Ended

Jul. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of intangible assets

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

		July 31, 2015															April 30, 2015
		Gross															Gross
		Carrying					Accumulated					Net Carrying					Carrying					Accumulated					Net Carrying
		Amount					Amortization					Amount					Amount					Amortization					Amount
Customer relationships		$		27,860			$		(2,813	)		$		25,047			$		28,260			$		(1,633	)		$		26,627
Developed technology				16,430					(1,327	)				15,103					16,630					(1,014	)				15,616
Patents, trademarks, and tradenames				35,804					(5,959	)				29,845					36,380					(5,303	)				31,077
				80,094					(10,099	)				69,995					81,270					(7,950	)				73,320
Patents in progress				541					—					541					448					—					448
		$		80,635			$		(10,099	)		$		70,536			$		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		$		8,446
2017				10,480
2018				9,735
2019				8,547
2020				7,399
Thereafter				25,388
Total		$		69,995

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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



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-Name Accounting Standards Codification



-Topic 350



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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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