v3.26.1
Fair Value Measurements (Details) - EBP 003 - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value $ 968,758 $ 871,747
Collective Trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 947,560 714,786
Mutual Fund Shares    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 16,574 148,903
Kemper ESOP Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 4,624 8,058
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 21,198 156,961
Level 1 | Collective Trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Level 1 | Mutual Fund Shares    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 16,574 148,903
Level 1 | Kemper ESOP Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 4,624 8,058
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 36,097 36,888
Level 2 | Collective Trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 36,097 36,888
Level 2 | Mutual Fund Shares    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Level 2 | Kemper ESOP Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Level 3    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Level 3 | Collective Trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Level 3 | Mutual Fund Shares    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Level 3 | Kemper ESOP Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Measured at Net Asset Value    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 911,463 677,898
Measured at Net Asset Value | Collective Trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 911,463 677,898
Measured at Net Asset Value | Mutual Fund Shares    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value 0 0
Measured at Net Asset Value | Kemper ESOP Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total Investments at Fair Value $ 0 $ 0