Quarterly report pursuant to Section 13 or 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 ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Jun. 25, 2020
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Jun. 25, 2020
Sep. 30, 2019
Dec. 31, 2019
Jan. 01, 2019
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              
Private placement warrants issued (in shares) 5,263,500              
Shares called upon by private placement warrants (in shares) 2,631,750       2,631,750      
Operating profit   $ 747 $ 1,064 $ 7,853 $ (38,181) $ 24,179    
Reclassification from accumulated other comprehensive income   $ (3,145) $ (3,145)       $ 0  
Restatement adjustment | ASU 2017-07                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Operating profit         $ 100      
Restatement adjustment | ASU 2018-02                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Reclassification from accumulated other comprehensive income               $ 2,100