Investment Securities (Details Textual) - USD ($) shares in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Investment Securities Information [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale	$ 1,100,000,000		$ 715,000,000		$ 1,141,231,000	$ 715,066,000	$ 110,177,000
Gain (Loss) on Sale of Investments					148,000,000	65,000,000
Visa B Shares, Amount Sold			1
Debt Instrument, Collateral Amount	1,500,000,000		$ 1,600,000,000		1,500,000,000	1,600,000,000
Interest Receivable	167,772,000		169,569,000		167,772,000	169,569,000
Held to maturity allowance for credit loss	(60,000)		(75,000)		(60,000)	(75,000)
Federal Home Loan Bank Stock	92,000,000		143,000,000		92,000,000	143,000,000
Federal Reserve Bank Stock	88,000,000		87,000,000		88,000,000	87,000,000
Equity Securities with Readily Determined Fair Value	11,000,000		7,000,000		11,000,000	7,000,000
Equity Securities without Readily Determinable Fair Value, Amount	13,000,000		35,000,000		13,000,000	35,000,000
Held-to-Maturity Securities [Member]
Schedule of Investment Securities Information [Line Items]
Interest Receivable	18,000,000		18,000,000		18,000,000	18,000,000
Available-for-sale Securities [Member]
Schedule of Investment Securities Information [Line Items]
Gain (Loss) on Sale of Investments	(148,000,000)		(65,000,000)
Interest Receivable	21,000,000		15,000,000		21,000,000	15,000,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Schedule of Investment Securities Information [Line Items]
Interest Receivable	2,000,000		4,000,000		2,000,000	4,000,000
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investment Securities Information [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale				$ 110,000,000
Gain (Loss) on Sale of Investments				$ 2,000,000
Visa B Shares
Schedule of Investment Securities Information [Line Items]
Gain (Loss) on Sale of Investments		$ 4,000,000	6,000,000
Federal Reserve Bank Stock [Member]
Schedule of Investment Securities Information [Line Items]
Interest Receivable	0		0		0	0
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0		0		0	0
US Treasury Securities [Member]
Schedule of Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0		0		0	0
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	$ 0		$ 0		$ 0	$ 0