Investment Securities, HTM Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 3,738,747	$ 3,860,235
Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	4,221	1,155
Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	2,846,177	2,938,090
Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	883,438	915,303
Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	4,911	5,687
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,000	999
US Treasury Securities [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
US Treasury Securities [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,000	999
US Treasury Securities [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
US Treasury Securities [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,659,722	1,682,473
US States and Political Subdivisions Debt Securities [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	4,221	1,155
US States and Political Subdivisions Debt Securities [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	767,151	760,329
US States and Political Subdivisions Debt Securities [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	883,438	915,303
US States and Political Subdivisions Debt Securities [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	4,911	5,687
Residential Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	885,476	941,973
Residential Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Residential Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	885,476	941,973
Residential Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Residential Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Residential Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	43,693	48,979
Residential Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Residential Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	43,693	48,979
Residential Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Residential Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	324,182	345,083
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	324,182	345,083
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	772,456	780,995
Commercial Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	772,456	780,995
Commercial Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	52,219	59,733
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Fitch, AAA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	52,219	59,733
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Fitch, AA Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] | Fitch, A Rating [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 0	$ 0