Investment Securities - Contractual Maturities of Debt Securities Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Amortized Cost
Due in one year	$ 13,002
Due after one year through five years	179,567
Due after five years through ten years	249,507
Due after ten years	272,235
Residential mortgage-backed securities	780,624
Amortized Cost	1,494,935	$ 1,116,091
Fair Value
Due in one year	12,941
Due after one year through five years	176,480
Due after five years through ten years	237,046
Due after ten years	235,048
Residential mortgage-backed securities	721,036
Total	$ 1,382,551	$ 1,128,809

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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