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Restructuring Charges - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 5 Months Ended | 6 Months Ended | 18 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 25, 2022 | Jul. 01, 2023 | Jun. 25, 2022 | Apr. 01, 2023 | Jul. 01, 2023 | Jun. 25, 2022 | Apr. 01, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  | $ 618 | $ 581 |  | $ 1,835 | $ 894 |
Stock-based Compensation |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  | 295 |  |
Employee Severance and Benefits |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  | 917 |  |
Contract Termination & Other Costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  | 233 |  |
Inventory Impairments & Other Inventory Related Costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  | 390 |  |
Probe Cards |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  | 223 | 227 |  | 1,357 | 269 |
Systems |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  | $ 395 | $ 354 |  | $ 478 | $ 625 |
2022 Restructuring Plan |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Percent of workforce eliminated | 13.00% |  |  |  |  |  |
Restructuring charges |  |  |  | $ 8,100 |  |  |
2022 Restructuring Plan | Stock-based Compensation |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  | 300 |  |  |
2022 Restructuring Plan | Corporate, Non-Segment |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  | 500 |  |  |
2022 Restructuring Plan | Probe Cards |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  | 7,100 |  |  |
2022 Restructuring Plan | Systems |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  | $ 500 |  |  |
2021 Restructuring Plan |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | $ 13,300
2021 Restructuring Plan | Employee Severance and Benefits |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 1,400
2021 Restructuring Plan | Contract Termination & Other Costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 2,000
2021 Restructuring Plan | Inventory Impairments & Other Inventory Related Costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 9,400
2021 Restructuring Plan | Other Costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 500
2021 Restructuring Plan | Probe Cards |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 10,100
2021 Restructuring Plan | Systems |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | $ 3,200

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