Marketable Securities - Held To Maturity, by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Amortized cost
Amortized cost	$ 881,249	$ 768,154
Residential mortgage-backed securities
Amortized cost
Due after one year through five years	20,612
Due after five years through ten years	20,250
Due after ten years	715,932
Amortized cost	756,794	$ 643,703
Fair value
Due after one year through five years	17,568
Due after five years through ten years	15,879
Due after ten years	615,315
Total residential mortgage-backed securities	$ 648,762

Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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