Annual report pursuant to Section 13 and 15(d)

FAIR VALUE DISCLOSURES - Fair Value of Debt (Details)

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FAIR VALUE DISCLOSURES - Fair Value of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Feb. 28, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Unamortized debt issuance costs $ 14,200    
Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Stated interest rate 6.875%   6.875%
Unamortized debt issuance costs $ 5,800 $ 7,200  
Secured Debt | NatWest Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Unamortized debt issuance costs 8,400    
Secured Debt | Lombard Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Unamortized discount   7,000  
Carrying Amount      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 548,070 511,421  
Carrying Amount | Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 394,184 392,763  
Carrying Amount | Secured Debt | NatWest Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 153,886    
Carrying Amount | Secured Debt | Lombard Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value   118,658  
Level 1 | Fair Value      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 1 | Fair Value | Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 1 | Fair Value | Secured Debt | NatWest Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0    
Level 1 | Fair Value | Secured Debt | Lombard Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value   0  
Level 2 | Fair Value      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 545,535 486,987  
Level 2 | Fair Value | Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 383,068 366,629  
Level 2 | Fair Value | Secured Debt | NatWest Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 162,467    
Level 2 | Fair Value | Secured Debt | Lombard Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value   120,358  
Level 3 | Fair Value      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 3 | Fair Value | Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 3 | Fair Value | Secured Debt | NatWest Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value $ 0    
Level 3 | Fair Value | Secured Debt | Lombard Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value   $ 0