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Summary of Significant Accounting Policies - Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Held-to-maturity Securities $ 2,683,241 $ 1,819,901
Interest Receivable 105,400 70,600
Other Assets    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Accrued interest receivable for investment securities 28,200 19,200
Interest Receivable 105,400 70,600
Other Liabilities    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Liability Recorded for Expected Credit Losses on Unfunded Commitments $ 67,200 $ 30,500