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DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Outstanding borrowings $ 150,000 $ 11,750
Less: debt issuance costs (2,575) (486)
Total debt 147,425 11,264
Less: current portion of long-term debt (15,000) (3,125)
Long-term debt 132,425 8,139
Syndicated credit facility 2015 | Revolving Credit Facility    
Debt Instrument [Line Items]    
Outstanding borrowings 0 0
Syndicated credit facility 2015 | Secured Debt    
Debt Instrument [Line Items]    
Outstanding borrowings 150,000 0
Syndicated credit facility 2015 | Capital expenditure facility    
Debt Instrument [Line Items]    
Outstanding borrowings 0 11,750
Commerzbank line of credit    
Debt Instrument [Line Items]    
Outstanding borrowings $ 0 $ 0