Segment Reporting (Tables)

3 Months Ended

Apr. 30, 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 period.

	Three Months Ended April 30,
	2017		2016
	(in thousands)
Taiwan	$	46,416	$	42,102
Asia Pacific		11,759		7,586
United States		2,055		1,847
North America other than United States		2,005		270
Europe		1,900		5,352
Total revenue	$	64,135	$	57,157