v3.26.1
FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Estimated Fair Values of Financial Instruments not Carried at Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Jun. 16, 2026
Dec. 31, 2025
Jun. 30, 2025
Nov. 23, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Carrying Value $ 100,367   $ 101,103    
Estimated Fair Value 101,407   99,550    
Surplus note          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Carrying Value $ 367   $ 1,103    
Unsecured Debt | 5.625% Senior Unsecured Notes Due 2026          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Stated percentage (in percent) 5.625%   5.625% 5.625% 5.625%
Carrying Value $ 0   $ 100,000    
Unsecured Debt | 7.75% Senior Unsecured Notes Due 2031          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Stated percentage (in percent) 7.75% 7.75% 7.75%    
Carrying Value $ 100,000   $ 0    
Surplus note | Surplus note          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Carrying Value 367   1,103    
Estimated Fair Value 364   1,081    
5.625% Senior unsecured notes | 5.625% Senior Unsecured Notes Due 2026          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Carrying Value 0   100,000    
Estimated Fair Value 0   98,469    
5.625% Senior unsecured notes | 7.75% Senior Unsecured Notes Due 2031          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Carrying Value 100,000   0    
Estimated Fair Value $ 101,043   $ 0