v3.22.2.2
Segment Reporting - Company's Revenue by Geographic Region Based on Bill-to Location (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2021
Revenue from External Customer [Line Items]        
Total revenue $ 80,884 $ 79,327 $ 171,189 $ 149,460
Taiwan [Member]        
Revenue from External Customer [Line Items]        
Total revenue 49,805 49,136 103,441 93,723
Asia Pacific [Member]        
Revenue from External Customer [Line Items]        
Total revenue 17,844 20,162 39,399 38,799
Europe [Member]        
Revenue from External Customer [Line Items]        
Total revenue 4,479 4,387 12,872 7,405
North America other than United States [Member]        
Revenue from External Customer [Line Items]        
Total revenue 4,386 4,443 9,272 7,133
United States [Member]        
Revenue from External Customer [Line Items]        
Total revenue $ 4,370 $ 1,199 $ 6,205 $ 2,400