Annual report [Section 13 and 15(d), not S-K Item 405]

FAIR VALUE DISCLOSURES (Details)

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FAIR VALUE DISCLOSURES (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Feb. 28, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Liabilities, fair value $ 671,454 $ 689,783  
Unamortized debt issuance costs (12,100)    
Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value $ 397,031 $ 395,610  
Stated interest rate 6.875% 6.875% 6.875%
Unamortized debt issuance costs $ (3,000) $ (4,400)  
Secured Debt | UKSAR Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 160,635 200,273  
Unamortized debt issuance costs (6,600) (9,100)  
Secured Debt | IRCG Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 113,788 93,900  
Unamortized debt issuance costs (2,500) (2,800)  
Level 1      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Liabilities, fair value 0 0  
Level 1 | 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 | Secured Debt | UKSAR Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 1 | Secured Debt | IRCG Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 2      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Liabilities, fair value 683,805 699,329  
Level 2 | Senior Notes | 6.875% Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 409,884 397,872  
Level 2 | Secured Debt | UKSAR Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 159,222 205,545  
Level 2 | Secured Debt | IRCG Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 114,699 95,912  
Level 3      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Liabilities, fair value 0 0  
Level 3 | 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 | Secured Debt | UKSAR Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value 0 0  
Level 3 | Secured Debt | IRCG Debt      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt, fair value $ 0 $ 0