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Investments in Securities - Investments Classified by Contractual Maturity Date (Details)
$ in Thousands
Dec. 31, 2022
USD ($)
Investments in Securities  
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost $ 492,547
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value $ 433,097