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Acquisitions - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Jul. 31, 2017
Sep. 19, 2016
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Business Acquisition [Line Items]                          
Estimated amortization period                     15 years    
Goodwill     $ 413,640,000       $ 422,185,000       $ 413,640,000 $ 422,185,000 $ 333,276,000
Strategic transaction costs (Note 13)                     400,000 4,200,000 2,500,000
Revenues     361,783,000 $ 331,096,000 $ 339,331,000 $ 325,894,000 $ 346,140,000 $ 296,129,000 $ 288,775,000 $ 265,765,000 1,358,104,000 1,196,809,000 1,149,530,000
Net income (loss)                     124,150,000 26,027,000 91,936,000
Depreciation                     26,900,000 28,000,000 27,000,000
Amortization primarily related to intangible assets                     10,509,000 9,434,000  
Americas                          
Business Acquisition [Line Items]                          
Goodwill     273,200,000               273,200,000    
Revenues                     854,287,000 736,847,000 678,433,000
Globe Holding Company LLC                          
Business Acquisition [Line Items]                          
Common stock acquired (as a percent) 100.00%                        
Business Combination, Consideration Transferred $ 215,000,000                        
Business Combination, Consideration Transferred, Working Capital Adjustments 1,400,000                        
Contingent consideration $ 0                        
Estimated amortization period 5 years                        
Future amortization expense, year one     4,100,000               4,100,000    
Future amortization expense, year two     4,100,000               4,100,000    
Future amortization expense, year three     4,100,000               4,100,000    
Future amortization expense, year four     3,200,000               3,200,000    
Future amortization expense, year five     2,000,000               2,000,000    
Estimated future depreciation expense, year one     1,000,000               1,000,000    
Estimated future depreciation expense, year two     1,000,000               1,000,000    
Estimated future depreciation expense, year three     1,000,000               1,000,000    
Estimated future depreciation expense, year four     1,000,000               1,000,000    
Estimated future depreciation expense, year five     1,000,000               1,000,000    
Goodwill $ 74,500,000                        
Strategic transaction costs (Note 13)                       1,800,000  
Revenues                     113,900,000 46,100,000  
Net income (loss)                     13,300,000 3,700,000  
Depreciation                     1,000,000 500,000  
Amortization primarily related to intangible assets                     4,100,000 1,700,000  
Net income related to acquiree adjusted to remove transaction costs                     13,600,000 4,900,000  
Globe Holding Company LLC | Americas                          
Business Acquisition [Line Items]                          
Goodwill $ 74,500,000                        
Senscient, Incorporated                          
Business Acquisition [Line Items]                          
Common stock acquired (as a percent)   0.00%                      
Contingent consideration   $ 0                      
Purchase price for acquisition   19,100,000                      
Future amortization expense, year one     700,000               700,000    
Future amortization expense, year two     700,000               700,000    
Future amortization expense, year three     500,000               500,000    
Future amortization expense, year four     200,000               200,000    
Future amortization expense, year five     $ 200,000               $ 200,000    
Goodwill   10,500,000                      
Strategic transaction costs (Note 13)                       $ 400,000 800,000
Revenues                         2,700,000
Net income (loss)                         1,100,000
Amortization primarily related to intangible assets                         $ 200,000
Senscient, Incorporated | International                          
Business Acquisition [Line Items]                          
Goodwill   $ 10,500,000                      
Technology related assets                          
Business Acquisition [Line Items]                          
Estimated amortization period                     8 years    
Technology related assets | Senscient, Incorporated                          
Business Acquisition [Line Items]                          
Estimated amortization period   10 years                      
Customer-related intangibles | Globe Holding Company LLC                          
Business Acquisition [Line Items]                          
Estimated amortization period 20 years                        
Customer-related intangibles | Senscient, Incorporated                          
Business Acquisition [Line Items]                          
Estimated amortization period   5 years