Segment Reporting - Company's Revenue by Geographic Region Based on Bill-to Location (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2022 |
Jan. 31, 2021 |
Jan. 31, 2020 |
|
| Revenue from External Customer [Line Items] | |||
| Total revenue | $ 331,856 | $ 222,990 | $ 228,732 |
| Taiwan [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Total revenue | 209,044 | 139,327 | 137,946 |
| Asia Pacific [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Total revenue | 81,480 | 57,270 | 66,867 |
| Europe [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Total revenue | 17,823 | 9,415 | 11,134 |
| North America other than United States [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Total revenue | 18,191 | 10,304 | 8,402 |
| United States [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Total revenue | $ 5,318 | $ 6,674 | $ 4,383 |