Investment Securities - Contractual Maturities of Debt Securities Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in one year	$ 3,852
Due after one year through five years	282,224
Due after five years through ten years	173,459
Due after ten years	253,258
Residential mortgage-backed securities	699,214
Amortized Cost	1,412,007	$ 1,437,911
Fair Value
Due in one year	3,834
Due after one year through five years	270,503
Due after five years through ten years	154,742
Due after ten years	210,381
Residential mortgage-backed securities	619,776
Total	$ 1,259,236	$ 1,261,397

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through 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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