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Restructuring and Other Charges, Net - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) Position	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) Facility	Jun. 30, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 2,525	$ 1,186	$ 18,699	$ 1,903
Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Expected number of sites closed | Facility			35
Expected number of sites closed, period			2 years
Restructuring charge			$ 5,100
2017 Productivity Program
Restructuring Cost and Reserve [Line Items]
Restructuring charge			24,500
Employee Severance | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charge			1,500
Employee Severance | 2019 Severance Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charge			13,600
Number of positions expected to be eliminated | Position	190
Payments for restructuring			3,600
Employee Severance | 2017 Productivity Program
Restructuring Cost and Reserve [Line Items]
Payments for restructuring		$ 4,500	$ 600
Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring charge				$ 4,500
Europe, Africa and Middle East | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility			4
North America | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility			1
Greater Asia | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility			1

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