Fair Value Measurements - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Thousands, € in Millions	Sep. 27, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2019 EUR (€)	Apr. 16, 2019 USD ($)	Apr. 16, 2019 EUR (€)
ARGES GmbH
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration		$ 7,870	€ 7.1
Ingenia-CAT, S.L.
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration				$ 6,600	€ 5.8
Significant Other Unobservable Inputs (Level 3) | ARGES GmbH
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration	$ 7,743
Valuation Technique	novt:ValuationTechniqueMonteCarloMethodMember
Significant Other Unobservable Inputs (Level 3) | ARGES GmbH | Revenue volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business acquisition, Percentage Applied	32.7
Significant Other Unobservable Inputs (Level 3) | ARGES GmbH | Cost of debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business acquisition, Percentage Applied	1.5
Significant Other Unobservable Inputs (Level 3) | ARGES GmbH | Revenue discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business acquisition, Percentage Applied	7.4
Significant Other Unobservable Inputs (Level 3) | Ingenia-CAT, S.L.
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration	$ 6,363
Valuation Technique	novt:ValuationTechniqueMonteCarloMethodMember
Significant Other Unobservable Inputs (Level 3) | Ingenia-CAT, S.L. | Revenue volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business acquisition, Percentage Applied	31.3
Significant Other Unobservable Inputs (Level 3) | Ingenia-CAT, S.L. | Cost of debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business acquisition, Percentage Applied	1.0
Significant Other Unobservable Inputs (Level 3) | Ingenia-CAT, S.L. | Revenue discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business acquisition, Percentage Applied	14.3
Significant Other Unobservable Inputs (Level 3) | Other
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration	$ 4,661
Significant Other Unobservable Inputs (Level 3) | Other | Revenue discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Asset acquisition, Percentage Applied	22.8