Investment Securities - Schedule of Maturities of the Investments in Debt Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Amortized Cost
Within 1 year	$ 82,266	$ 145,787
After 1 year through 5 years	522,025	472,284
After 5 years through 10 years	212,350	246,784
Over 10 years	992,012	851,363
Amortized Cost	1,808,653	1,716,218
Estimated Fair Value
Within 1 year	82,234	146,092
After 1 year through 5 years	497,645	454,138
After 5 years through 10 years	209,495	242,931
Over 10 years	971,923	845,607
Total	$ 1,761,297	$ 1,688,768
Weighted Average Rate
Within 1 year	3.99%	3.89%
After 1 year through 5 years	3.03%	2.76%
After 5 years through 10 years	3.49%	3.56%
Over 10 years	4.27%	4.18%
Total	3.81%	3.69%

Represents the weighted average rate of available-for-sale debt securities.

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