v3.5.0.2
Acquired Intangible Assets, net
 6 Months Ended
Oct. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Acquired Intangible Assets, net
Acquired Intangible Assets, net
Acquired intangible assets, net, as of October 31, 2016 and April 30, 2016 are as follows (in thousands):
 
October 31,
2016
 
April 30,
2016
 
Gross Fair
Value
 
Accumulated
Amortization
 
Net Book
Value
 
Gross Fair
Value
 
Accumulated
Amortization
 
Net Book
Value
Customer relationships
$
11,835

 
$
(4,777
)
 
$
7,058

 
$
11,835

 
$
(4,158
)
 
$
7,677

Developed technology
3,265

 
(1,661
)
 
1,604

 
3,265

 
(1,335
)
 
1,930

Total
$
15,100

 
$
(6,438
)
 
$
8,662

 
$
15,100

 
$
(5,493
)
 
$
9,607


The amortization of customer relationships is recorded as amortization expense and the amortization for developed technology is amortized to cost of revenue.
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 2017
$
945

Fiscal year 2018
1,890

Fiscal year 2019
1,856

Fiscal year 2020
1,130

Fiscal year 2021
1,130

Thereafter
1,711

Total
$
8,662