v3.26.3
Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 12, 2026
Mar. 03, 2026
Feb. 26, 2026
Feb. 20, 2026
Mar. 31, 2023
Sep. 30, 2026
Dec. 31, 2025
Nov. 12, 2025
Debt Instrument [Line Items]                
Total outstanding debt           $ 297,000    
Long-term debt           297,044    
Short-term debt             $ 100,000  
Proceeds from issuance of debt           $ 296,866    
FHLBC                
Debt Instrument [Line Items]                
Repayments of FHLB advances $ 50,000              
Interest paid monthly at an annualized rate               4.21%
Senior Notes                
Debt Instrument [Line Items]                
Issue of senior notes by public debt offering   $ 300,000            
Debt instrument maturity date   Jun. 01, 2036            
Frequency of interest payment   semi-annually            
Stated interest rate, payable semi-annually (as a percent)   5.375%            
Proceeds from issuance of debt   $ 297,000            
Average interest rate on debt (as a percent)           5.38%    
Senior Notes | Significant Other Observable Inputs (Level 2)                
Debt Instrument [Line Items]                
Notes Payable, Fair Value Disclosure           $ 274,000    
Line of Credit | PNC                
Debt Instrument [Line Items]                
Repaid amount       $ 50,000        
Floating interest rate       5.27%        
Maximum borrowing capacity - Line of credit     $ 150,000   $ 100,000      
Term of facility         3 years      
Line of credit facility expiration date     Feb. 26, 2031   May 29, 2026      
Maximum borrowing capacity conditional expansion     $ 200,000