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Investment Securities (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Investment Securities Information [Line Items]              
Transfer of AFS securities to HTM securities   $ 1,600,000,000     $ 1,621,990,000 $ 0  
Proceeds from sales of AFS investment securities $ 327,000   $ 107,412,000 $ 51,000,000 1,061,000 158,708,000  
Debt Instrument, Collateral Amount 2,600,000,000       2,600,000,000   $ 2,300,000,000
Interest receivable 95,426,000       95,426,000   80,528,000
Debt Securities, Held-to-maturity, Nonaccrual, Interest Income         0 $ 0  
Debt Securities, Held to Maturity, Past Due 0       0   0
Held to maturity allowance for credit loss (63,000)       (63,000)   (55,000)
Federal Home Loan Bank Stock 151,000,000       151,000,000   82,000,000
Federal Reserve Bank Stock 87,000,000       87,000,000   87,000,000
Equity securities with readily determinable fair values, Fair Value $ 6,000,000       6,000,000   5,000,000
Visa Restricted Stock Owned. Total 78,000            
Equity Securities without Readily Determinable Fair Value, Amount $ 14,000,000       14,000,000   14,000,000
Held-to-maturity Securities [Member]              
Investment Securities Information [Line Items]              
Interest receivable 18,000,000       18,000,000   15,000,000
Available-for-sale Securities [Member]              
Investment Securities Information [Line Items]              
Interest receivable 7,000,000       7,000,000   9,000,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]              
Investment Securities Information [Line Items]              
Interest receivable 1,000,000       1,000,000   975,000
Federal Reserve Bank Stock [Member]              
Investment Securities Information [Line Items]              
Interest receivable 0       0   0
US Treasury Securities              
Investment Securities Information [Line Items]              
Held to maturity allowance for credit loss 0       0   0
US States and Political Subdivisions Debt Securities [Member]              
Investment Securities Information [Line Items]              
Held to maturity allowance for credit loss 0       0   0
Agency mortgage-related securities              
Investment Securities Information [Line Items]              
Held to maturity allowance for credit loss $ 0       $ 0   $ 0