v3.26.1
Financing Agreement - Letters of Credit (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 05, 2026
Jan. 16, 2026
Jan. 08, 2026
Jan. 02, 2026
Nov. 17, 2025
Jun. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Letters of Credit Facilities [Line Items]                
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances           $ 105.0 $ 105.0 $ 35.0
Interest Expense, Loans from Other Federal Home Loan Banks           1.0 $ 1.9  
ECIC                
Letters of Credit Facilities [Line Items]                
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances       $ 17.0        
Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate       3.77%        
Debt Instrument, Maturity Date       May 31, 2029        
EPIC                
Letters of Credit Facilities [Line Items]                
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances   $ 28.0            
Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate   3.87%            
Debt Instrument, Maturity Date   May 31, 2029            
EAC                
Letters of Credit Facilities [Line Items]                
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances     $ 22.0          
Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate     3.78%          
Debt Instrument, Maturity Date     May 31, 2029          
EICN [Member]                
Letters of Credit Facilities [Line Items]                
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances $ 16.0 [1]       $ 19.0      
Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate 3.79% [1]       3.84%      
Debt Instrument, Maturity Date May 31, 2029 [1]       May 31, 2029      
CIC [Member]                
Letters of Credit Facilities [Line Items]                
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances $ 3.0              
Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate 3.74%              
Debt Instrument, Maturity Date Feb. 05, 2029              
Federal Home Loan Bank [Member]                
Letters of Credit Facilities [Line Items]                
Letters of credit, unused capacity, commitment fee percentage             0.15%  
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds           170.0 $ 170.0 170.0
Letters of credit collateral amount           423.6 423.6 468.6
Collateral against the Outstanding Letters of Credit           $ 297.2 $ 297.2 $ 221.5
Line of Credit Facility, Expiration Date             Mar. 31, 2027  
[1]
(1) On February 5, 2026, the terms of this advance were revised from an interest rate of 3.70% and a maturity date of December 21, 2026, to an interest rate of 3.79% and a maturity date of May 31, 2029.