Investment Securities, HTM Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	$ 3,960,451	$ 2,239,003
Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	1,158	896
AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	3,034,630	1,312,642
AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	917,059	914,591
A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	7,604	10,873
Residential Related Securities | FNMA/FHLMC [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	961,231	34,347
Residential Related Securities | FNMA/FHLMC [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Residential Related Securities | FNMA/FHLMC [Member] | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	961,231	34,347
Residential Related Securities | FNMA/FHLMC [Member] | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Residential Related Securities | FNMA/FHLMC [Member] | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Residential Related Securities | Government National Mortgage Association (GNMA)
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	52,979	48,053
Residential Related Securities | Government National Mortgage Association (GNMA) | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Residential Related Securities | Government National Mortgage Association (GNMA) | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	52,979	48,053
Residential Related Securities | Government National Mortgage Association (GNMA) | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Residential Related Securities | Government National Mortgage Association (GNMA) | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	364,728
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	364,728
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0
Commercial Mortgage-Backed Securities [Member] | FNMA/FHLMC [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	778,796	425,937
Commercial Mortgage-Backed Securities [Member] | FNMA/FHLMC [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Commercial Mortgage-Backed Securities [Member] | FNMA/FHLMC [Member] | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	778,796	425,937
Commercial Mortgage-Backed Securities [Member] | FNMA/FHLMC [Member] | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Commercial Mortgage-Backed Securities [Member] | FNMA/FHLMC [Member] | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA)
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	69,369	100,907
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	69,369	100,907
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	999	1,000
US Treasury Securities [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
US Treasury Securities [Member] | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	999	1,000
US Treasury Securities [Member] | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
US Treasury Securities [Member] | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	0	0
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	1,732,351	1,628,759
US States and Political Subdivisions Debt Securities [Member] | Not Rated [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	1,158	896
US States and Political Subdivisions Debt Securities [Member] | AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	806,529	702,399
US States and Political Subdivisions Debt Securities [Member] | AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	917,059	914,591
US States and Political Subdivisions Debt Securities [Member] | A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity	$ 7,604	$ 10,873