FAIR VALUE DISCLOSURES (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Feb. 28, 2021 |
6.875% Senior Notes | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Stated interest rate | 6.875% | | |
IRCG Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Unamortized debt issuance costs | $ 1,600 | | |
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 | $ 4,700 | $ 5,800 | |
Secured Debt | UKSAR Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Unamortized debt issuance costs | 9,800 | 8,400 | |
Carrying Amount | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 629,066 | 548,070 | |
Carrying Amount | Senior Notes | 6.875% Senior Notes | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 395,251 | 394,184 | |
Carrying Amount | Secured Debt | UKSAR Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 184,014 | 153,886 | |
Carrying Amount | Secured Debt | IRCG Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 49,801 | | |
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 | UKSAR Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 0 | 0 | |
Level 1 | Fair Value | Secured Debt | IRCG 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 | 636,939 | 545,535 | |
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 | 394,794 | 383,068 | |
Level 2 | Fair Value | Secured Debt | UKSAR Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 190,947 | 162,467 | |
Level 2 | Fair Value | Secured Debt | IRCG Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 51,198 | | |
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 | UKSAR Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | 0 | $ 0 | |
Level 3 | Fair Value | Secured Debt | IRCG Debt | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Long-term debt, fair value | $ 0 | | |