Investment Securities - Summary of Available-For-Sale Investment Securities Held by the Company (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	$ 1,177,559	$ 1,088,561
Available-for-sale investment securities, Gross Unrealized Gains	2,083	1,237
Available-for-sale investment securities, Gross Unrealized Losses	(87)	(274)
Available-for-sale investment securities, Fair Market Value	1,179,555	1,089,524
U.S. Government Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	587,384	542,962
Available-for-sale investment securities, Gross Unrealized Gains	731	417
Available-for-sale investment securities, Gross Unrealized Losses	(12)	(35)
Available-for-sale investment securities, Fair Market Value	588,103	543,344
Agency obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	62,992	57,986
Available-for-sale investment securities, Gross Unrealized Gains	7	2
Available-for-sale investment securities, Gross Unrealized Losses	(42)	(57)
Available-for-sale investment securities, Fair Market Value	62,957	57,931
Corporate Debt Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	527,183	487,613
Available-for-sale investment securities, Gross Unrealized Gains	1,345	818
Available-for-sale investment securities, Gross Unrealized Losses	(33)	(182)
Available-for-sale investment securities, Fair Market Value	$ 528,495	$ 488,249