v3.26.3
Fair Value Measurements - Valuation of Financial Instruments That are Marked-to-Market on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Assets:    
Trading investments $ 41,308 $ 49,250
Available-for-sale investments 2,847,109 1,758,070
Derivative instruments 1 0
Total earning assets $ 2,888,418 $ 1,807,320
Derivative asset, location Other Assets, Net Other Assets, Net
Liabilities:    
Derivative instruments $ 0 $ (8)
Total 0 (8)
Level 1     
Assets:    
Trading investments 0 0
Available-for-sale investments 0 0
Derivative instruments 0 0
Total earning assets 0 0
Liabilities:    
Derivative instruments 0 0
Total 0 0
Level 2     
Assets:    
Trading investments 0 0
Available-for-sale investments 2,845,845 1,756,178
Derivative instruments 1 0
Total earning assets 2,845,846 1,756,178
Liabilities:    
Derivative instruments 0 (8)
Total 0 (8)
Level 3     
Assets:    
Trading investments 41,308 49,250
Available-for-sale investments 1,264 1,892
Derivative instruments 0 0
Total earning assets 42,572 51,142
Liabilities:    
Derivative instruments 0 0
Total $ 0 $ 0