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Income Taxes TCIs and Related Unfunded Commitments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Disclosure [Abstract]      
Affordable housing tax credit investments, net $ 211,572 $ 170,115  
Other tax credit investments, net 29,649 35,907  
Total TCIs, net 241,221 206,022  
Unfunded affordable housing tax credit commitments 84,572 58,312  
Other tax credit liabilities 24,109 28,361  
Total unfunded tax credit commitments and liabilities 108,681 86,673  
Tax credits and benefits (26,762) (28,748) $ (27,154)
Amortization of tax credits and benefits, net of tax benefits 25,069 23,446 19,298
Deferred tax expense 559 610 766
Total reduction in income tax expense (1,134) (4,692) (7,090)
Total amortization of TCIs $ 0 $ 0 $ 2,783
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] Other liabilities Other liabilities  
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] Net Income Net Income  
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] Income tax benefit Income tax benefit