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LONG-TERM DEBT - Senior Debt (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]                  
Refinancing expenses             $ 0 $ 845,000 $ 0
Senior Secured Second-Lien Notes Due 2027                  
Debt Instrument [Line Items]                  
Medium-term notes     $ 325,000,000     $ 325,000,000   325,000,000  
Interest accrual (percent)           6.50%      
Credit facility           $ 425,000,000      
Debt issuance price, percentage of principal (percent)     100.75%            
Credit Facility                  
Debt Instrument [Line Items]                  
Credit facility           89,000,000      
Term B-1 Loan                  
Debt Instrument [Line Items]                  
Deferred finance costs written off         $ 300,000 1,600,000      
Write-off of unamortized premium           200,000      
New deferred financing costs recorded         3,800,000 $ 3,900,000      
Repayments of debt       $ 96,700,000          
Senior Secured Second-Lien Notes Due 2027 - Additional Notes                  
Debt Instrument [Line Items]                  
Medium-term notes     $ 45,000,000   $ 100,000,000     $ 45,000,000  
Interest accrual (percent)     6.50%   6.50%        
Debt issuance price, percentage of principal (percent)               105.00%  
Term B-2 Loan                  
Debt Instrument [Line Items]                  
New deferred financing costs recorded     $ 800,000         $ 800,000  
Repayments of debt $ 44,600,000                
Refinancing expenses $ 400,000                
6.500% notes due May 1, 2027 | Senior Notes                  
Debt Instrument [Line Items]                  
Repurchase amount   $ 10,000,000              
Gain on repurchase   $ 600,000              
Until May 1, 2022 | Senior Secured Second-Lien Notes Due 2027                  
Debt Instrument [Line Items]                  
Redemption price, percentage of principal amount redeemed (percent)           106.50%      
On or after May 1, 2022 | Senior Secured Second-Lien Notes Due 2027                  
Debt Instrument [Line Items]                  
Redemption price, percentage of principal amount redeemed (percent)           104.875%