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Restructuring Charges (Tables)
 6 Months Ended
Oct. 31, 2016
Restructuring Charges [Abstract]  
Restructuring Charges
As of October 31, 2016 and April 30, 2016, the accrued liability associated with the Company's restructuring activities consisted of the following (in thousands):
 
Workforce Reduction
 
Excess Facilities
 
Total
 
(in thousands)
Balance at April 30, 2016
$
497

 
$
546

 
$
1,043

    Restructuring charges
459

 
635

 
1,094

    Utilization
(929
)
 
(837
)
 
(1,766
)
Balance at October 31, 2016
27

 
344

 
371