Segment Reporting (Tables)

12 Months Ended

Jan. 31, 2021

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.

	Year Ended January 31,
	2021		2020		2019
	(in thousands)
Taiwan	$	139,327	$	137,946	$	132,199
Asia Pacific		57,270		66,867		66,981
Europe		9,415		11,134		18,244
North America other than United States		10,304		8,402		7,028
United States		6,674		4,383		3,316
Total revenue	$	222,990	$	228,732	$	227,768