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Segment Reporting (Tables)
 6 Months Ended
Jul. 31, 2019
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:

 

 

 

Three Months Ended July 31,

 

 

Six Months Ended July 31,

 

 

 

2019

 

 

2018

 

 

2019

 

 

2018

 

 

 

(in thousands)

 

Taiwan

 

$

30,981

 

 

$

39,144

 

 

$

58,581

 

 

$

72,350

 

Asia Pacific

 

 

17,246

 

 

 

18,045

 

 

 

31,734

 

 

 

34,401

 

Europe

 

 

4,101

 

 

 

2,875

 

 

 

7,584

 

 

 

7,457

 

North America other than United States

 

 

3,001

 

 

 

1,503

 

 

 

3,884

 

 

 

3,509

 

United States

 

 

1,081

 

 

 

907

 

 

 

1,815

 

 

 

1,695

 

Total revenue

 

$

56,410

 

 

$

62,474

 

 

$

103,598

 

 

$

119,412