XML 74 R64.htm IDEA: XBRL DOCUMENT
v3.22.2

Accumulated Other Comprehensive Income (Loss) - Additional Information (Details) $ in Thousands | 6 Months Ended
--- | ---
Jul. 02, 2022 USD ($)
Accumulated Other Comprehensive Loss [Abstract] |
Tax Effect Marketable Securities | $ 681
Tax Effect Foreign Currency Translation | $ 0

X
- Definition Accumulated Other Comprehensive Loss [Abstract] + References No definition available. + Details
Name: | onto_AccumulatedOtherComprehensiveLossAbstract
Namespace Prefix: | onto_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition tax effects on net income of amounts recorded in other comprehensive loss for foreign currency translation adjustments + References No definition available. + Details
Name: | onto_TaxEffectForeignCurrencyTranslation
Namespace Prefix: | onto_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition tax effects on net income of amounts recorded in other comprehensive loss for net unrealized losses on available-for-sale marketable securities. + References No definition available. + Details
Name: | onto_TaxEffectMarketableSecurities
Namespace Prefix: | onto_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration