Acquired Intangible Assets, net (Tables)

12 Months Ended

Apr. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets, Net

Acquired intangible assets, net, as of April 30, 2017 and April 30, 2016 for continuing operations are as follows (in thousands):

	April 30, 2017							April 30, 2016
	Gross Fair Value		Accumulated Amortization			Net Book Value		Gross Fair Value		Accumulated Amortization			Net Book Value
Customer relationships	$	11,835	$	(5,395	)	$	6,440	$	11,835	$	(4,158	)	$	7,677
Developed technology	3,265		(1,988		)	1,277		3,265		(1,335		)	1,930
Total	$	15,100	$	(7,383	)	$	7,717	$	15,100	$	(5,493	)	$	9,607

Estimate of Future Amortization Expense for Definite-Lived Intangible Assets

The following table presents our estimate of future amortization expense for definite-lived intangible assets (in thousands):

Fiscal period:	Amount
2018	$	1,890
2019	1,856
2020	1,130
2021	1,130
2022	1,130
Thereafter	581
Total	$	7,717