Leases - Additional Information (Details)	6 Months Ended
Jun. 30, 2023
Lessee Lease Description [Line Items]
Lease renewal terms and termination description	Certain leases include one or more options to renew, with renewal terms that can extend the lease term from one to ten years, and options to terminate the leases within one year.
Minimum
Lessee Lease Description [Line Items]
Lease agreement expiration year	2023
Lease renewal terms	1 year
Maximum
Lessee Lease Description [Line Items]
Lease agreement expiration year	2036
Lease renewal terms	10 years
Lease termination period	1 year
Land \| Maximum
Lessee Lease Description [Line Items]
Lease agreement expiration year	2078

Lease agreements expiration year.

No definition available.

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Namespace Prefix:	novt_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Lessee operating lease termination period.

+ References

No definition available.

+ Details

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Namespace Prefix:	novt_
Data Type:	xbrli:durationItemType
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Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of lessee's operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeOperatingLeaseDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_MajorPropertyClassAxis=us-gaap_LandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: