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v3.10.0.1

Schedule of Revenue by end market (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 28, 2018 | Sep. 29, 2017 | Sep. 28, 2018 | Sep. 29, 2017
Segment Reporting Information [Line Items] |  |  |  |
Total revenue by end market | 100.00% | 100.00% | 100.00% | 100.00%
Advanced Industrial |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue by end market | 50.00% | 50.00% | 50.00% | 55.00%
Medical |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue by end market | 50.00% | 50.00% | 50.00% | 45.00%

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- Definition Percentage of revenue by end market. + References No definition available. + Details
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Namespace Prefix: | novt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsegmentsAxis=novt_AdvancedIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsegmentsAxis=novt_MedicalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |