Segment Reporting (Tables)

9 Months Ended

Oct. 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:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2021		2020		2021		2020
	(in thousands)
Taiwan	$	59,412	$	35,073	$	153,135	$	96,846
Asia Pacific		21,323		14,642		60,122		43,635
Europe		4,432		1,970		11,837		6,856
North America other than United States		5,984		2,433		13,117		8,449
United States		1,016		1,972		3,416		5,062
Total revenue	$	92,167	$	56,090	$	241,627	$	160,848