Acquired Intangible Assets, net (Tables)

6 Months Ended

Oct. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets, Net

Acquired intangible assets, net, as of October 31, 2017 and April 30, 2017 are as follows (in thousands):

	October 31, 2017							April 30, 2017
	Gross Fair Value		Accumulated Amortization			Net Book Value		Gross Fair Value		Accumulated Amortization			Net Book Value
Customer relationships	$	11,835	$	(6,013	)	$	5,822	$	11,835	$	(5,395	)	$	6,440
Developed technology	3,265		(2,315		)	950		3,265		(1,988		)	1,277
Total	$	15,100	$	(8,328	)	$	6,772	$	15,100	$	(7,383	)	$	7,717

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
Remaining six months of fiscal year 2018	$	945
Fiscal year 2019	1,856
Fiscal year 2020	1,130
Fiscal year 2021	1,130
Fiscal year 2022	1,130
Thereafter	581
Total	$	6,772