Annual report pursuant to Section 13 and 15(d)

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 25, 2020
Dec. 31, 2020
Jun. 25, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Private placement warrants issued (in shares) 5,263,500            
Shares called upon by private placement warrants (in shares) 2,631,750   2,631,750        
Increase in operating profit   $ (6,106,000) $ (38,181,000)   $ 29,676,000 $ 27,752,000  
Reclassification from accumulated other comprehensive income   (8,605,000)   $ (8,605,000) 0    
Workers compensation and group medical liabilities   500,000   $ 500,000 700,000    
Advertising expense   6,200,000 4,800,000   11,900,000 16,100,000  
Total foreign exchange gains (losses), tax   (900,000) 500,000   (2,000,000.0) (1,900,000)  
Expense related to remeasurement adjustments   300,000 0   0    
Restructuring and other non-recurring expenses   1,052,000 0   2,193,000 9,461,000  
Minimum | Buildings              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Property, plant and equipment, useful life       3 years      
Minimum | Property, Plant and Equipment, Other Types              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Property, plant and equipment, useful life       1 year      
Maximum | Buildings              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Property, plant and equipment, useful life       40 years      
Maximum | Property, Plant and Equipment, Other Types              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Property, plant and equipment, useful life       14 years      
Employee Severance              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Restructuring and other non-recurring expenses   $ 1,100,000     600,000 3,100,000  
Facility Closing              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Restructuring and other non-recurring expenses       $ 0      
Facility Closing | Merisant              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Restructuring and other non-recurring expenses         800,000 1,900,000  
Facility Closing | Mafco Worldwide              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Restructuring and other non-recurring expenses         $ 800,000 $ 4,500,000  
Common Stock              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Conversion basis for conversion of the then-issued and outstanding ordinary shares of predecessor into successor shares (in shares) 1            
Shares issued (in shares) 7,500,000            
Restatement adjustment | ASU 2017-07              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Increase in operating profit     $ 100,000        
Restatement adjustment | ASU 2018-02              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Reclassification from accumulated other comprehensive income             $ 2,100,000