XML 78 R70.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Disclosure - Restructuring (Additional Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 29, 2024 | Jul. 01, 2023 | Jun. 29, 2024 | Jul. 01, 2023
Restructuring Charges [Abstract] |  |  |  |
Restructuring cost in cost of goods sold | $ 703 | $ 0 | $ 1,491 | $ 2,279
RestructuringCost | 1,324 | 1,192 | 2,370 | 5,505
Restructuring costs in operating expenses | $ 621 | $ 1,192 | $ 879 | $ 3,226

X
- Definition Restructuring cost recored to cost of goods sold for inventory write-downs. + References No definition available. + Details
Name: | onto_RestructuringCostInCostOfGoodsSold
Namespace Prefix: | onto_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Restructuring cost recorded in operating expense for employee severance + References No definition available. + Details
Name: | onto_RestructuringCostInOperatingExpenses
Namespace Prefix: | onto_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition RestructuringCost + References No definition available. + Details
Name: | onto_Restructuringcost
Namespace Prefix: | onto_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RestructuringChargesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration