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v3.20.4

Cash, cash equivalents and short-term investments (Detail) - USD ($) $ in Thousands | Jan. 01, 2021 | Jan. 03, 2020
--- | --- | ---
Fair Value Measurements [Line Items] |  |
Amortized Cost | $ 242,518 | $ 231,277
Unrealized Gains | 8 | 324
Unrealized Losses | 0 | 0
Estimated Fair Value | 242,526 | 231,601
Cash |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 146,083 | 135,225
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | 146,083 | 135,225
Money market securities |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 51,442 | 41,211
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | 51,442 | 41,211
Total cash equivalents |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 51,442 | 41,211
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | 51,442 | 41,211
Total cash and cash equivalents |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 197,525 | 176,436
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | 197,525 | 176,436
U.S. Treasury securities |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 44,993 | 54,841
Unrealized Gains | 8 | 324
Unrealized Losses | 0 | 0
Estimated Fair Value | 45,001 | 55,165
Total short-term investments |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 44,993 | 54,841
Unrealized Gains | 8 | 324
Unrealized Losses | 0 | 0
Estimated Fair Value | $ 45,001 | $ 55,165

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