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Segment Reporting (Tables)
 9 Months Ended
Oct. 31, 2017
Segment Reporting [Abstract]  
Company's Revenue by Geographic Region Based on Bill-to Location

The following table sets forth the Company’s revenue by geographic region based on bill-to location for the periods indicated. Prior period revenue amounts by geographic region have been reclassified to conform to the fiscal year 2018 presentation. These reclassifications did not impact total revenues in the prior periods.

 

 

 

Three Months Ended October 31,

 

 

Nine Months Ended October 31,

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

 

 

(in thousands)

 

Taiwan

 

$

45,026

 

 

$

53,932

 

 

$

139,494

 

 

$

142,837

 

Asia Pacific

 

 

19,000

 

 

 

11,286

 

 

 

43,050

 

 

 

30,449

 

Europe

 

 

20,908

 

 

 

32,314

 

 

 

29,252

 

 

 

40,948

 

North America other than United States

 

 

2,582

 

 

 

1,261

 

 

 

7,566

 

 

 

2,626

 

United States

 

 

1,546

 

 

 

1,697

 

 

 

5,465

 

 

 

5,929

 

Total revenue

 

$

89,062

 

 

$

100,490

 

 

$

224,827

 

 

$

222,789