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Share-Based Compensation Expense
 6 Months Ended
Apr. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-Based Compensation Expense
SHARE-BASED COMPENSATION EXPENSE

The following table summarizes share-based compensation expense for the periods indicated (in thousands):
 
Quarter Ended April 30,
 
Six Months Ended April 30,
 
2018
 
2017
 
2018
 
2017
Product costs
$
824

 
$
708

 
$
1,496

 
$
1,269

Service costs
722

 
679

 
1,346

 
1,307

Share-based compensation expense included in cost of sales
1,546

 
1,387

 
2,842

 
2,576

Research and development
3,796

 
3,653

 
7,052

 
6,862

Sales and marketing
3,760

 
3,513

 
7,088

 
6,386

General and administrative
5,109

 
3,417

 
9,583

 
8,870

Share-based compensation expense included in operating expense
12,665

 
10,583

 
23,723

 
22,118

Share-based compensation expense capitalized in inventory, net
(45
)
 
35

 
(6
)
 
136

Total share-based compensation
$
14,166

 
$
12,005

 
$
26,559

 
$
24,830



As of April 30, 2018, total unrecognized share-based compensation expense was approximately $93.0 million which relates to unvested restricted stock units and is expected to be recognized over a weighted-average period of 1.6 years.