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Fair Value Measurements - Asset Acquisition Contingent Consideration - Additional Information (Details) $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Feb. 29, 2020 USD ($) | Apr. 03, 2020 USD ($) Installment | Dec. 14, 2016 USD ($) | Dec. 14, 2016 EUR (€)
Asset Acquisition Contingent Consideration [Line Items] |  |  |  |
Payment for contingent consideration | $ 2.6 |  |  |
Video Signal Processing and Management Technologies |  |  |  |
Asset Acquisition Contingent Consideration [Line Items] |  |  |  |
Date of Acquisition Agreement |  | Dec. 14, 2016 |  |
Number of contingent consideration annual installments | Installment |  | 4 |  |
Undiscounted range of outcomes, minimum | € |  |  |  | € 0
Undiscounted range of outcomes, maximum |  |  | $ 6.6 | € 5,500,000
Fair value of contingent consideration |  | $ 0.0 |  |

X
- Definition Amount of liability recognized arising from contingent consideration in an asset acquisition. + References No definition available. + Details
Name: | novt_AssetAcquisitionContingentConsiderationLiability
Namespace Prefix: | novt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset acquisition contingent consideration. + References No definition available. + Details
Name: | novt_AssetAcquisitionContingentConsiderationLineItems
Namespace Prefix: | novt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For contingent consideration arrangements, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References No definition available. + Details
Name: | novt_ContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Namespace Prefix: | novt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition For contingent consideration arrangements, this element represents an estimate of the low-end of the potential range (undiscounted) of the consideration which may be paid. + References No definition available. + Details
Name: | novt_ContingentConsiderationArrangementsRangeOfOutcomesValueLow
Namespace Prefix: | novt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Date when the acquisition agreement was executed, in CCYY-MM-DD format. + References No definition available. + Details
Name: | novt_DateOfAcquisitionAgreement
Namespace Prefix: | novt_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contingent consideration payment annual installments. + References No definition available. + Details
Name: | novt_NumberOfContingentConsiderationAnnualInstallments
Namespace Prefix: | novt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payment for asset acquisition contingent consideration liability. + References No definition available. + Details
Name: | novt_PaymentForAssetAcquisitionContingentConsiderationLiability
Namespace Prefix: | novt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=novt_VideoSignalProcessingAndManagementTechnologiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |