Quarterly report [Sections 13 or 15(d)]

FAIR VALUE DISCLOSURES (Details)

v3.26.1
FAIR VALUE DISCLOSURES (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Jan. 31, 2026
Dec. 31, 2025
Feb. 28, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Liabilities, fair value $ 754,810   $ 671,454  
6.875% Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Stated interest rate 6.875%   6.875%  
Senior Notes | 6.750% Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value $ 489,251      
Stated interest rate 6.75% 6.75%    
Unamortized debt issuance costs $ 10,700      
Senior Notes | 6.875% Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value     $ 397,031  
Stated interest rate 6.875%     6.875%
Unamortized debt issuance costs     3,000  
Secured Debt | UKSAR Debt        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value $ 153,783   160,635  
Unamortized debt issuance costs 6,200   6,600  
Secured Debt | IRCG Debt        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value 111,776   113,788  
Unamortized debt issuance costs 2,300   2,500  
Level 1        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Liabilities, fair value 0   0  
Level 1 | Senior Notes | 6.750% Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value 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  
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 775,199   683,805  
Level 2 | Senior Notes | 6.750% Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value 507,702      
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  
Level 2 | Secured Debt | UKSAR Debt        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value 154,347   159,222  
Level 2 | Secured Debt | IRCG Debt        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value 113,150   114,699  
Level 3        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Liabilities, fair value 0   0  
Level 3 | Senior Notes | 6.750% Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long-term debt, fair value 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  
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