Investment Securities - Schedule of Investment in AFS Securities and HTM Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Amortized Cost
Total investment securities available-for-sale	$ 1,055,146
Estimated Fair Value
Less: allowance for credit losses	0	$ (22)
Total investment securities available-for-sale	976,770
Amortized Cost
Less: allowance for credit losses	(1,030)	(1,306)
Total investment securities held-to-maturity	854,780	938,647
Estimated Fair Value
Total investment securities held-to-maturity	774,947	820,382
Asset-Backed Securities
Amortized Cost
Within one year	58,374
One to five years	224,088
Five to ten years	64,720
Beyond ten years	18,493
Estimated Fair Value
Within one year	57,691
One to five years	213,883
Five to ten years	59,807
Beyond ten years	16,340
Amortized Cost
Within one year	4,897
One to five years	71,023
Five to ten years	98,654
Beyond ten years	51,074
Less: allowance for credit losses	(1,030)
Total investment securities held-to-maturity	854,780
Total	1,909,926
Estimated Fair Value
Within one year	4,905
One to five years	69,041
Five to ten years	92,580
Beyond ten years	46,882
Total investment securities held-to-maturity	774,947
Total	1,751,717
Residential mortgage-backed securities
Amortized Cost
Amortized cost, without maturity	620,540
Estimated Fair Value
Estimated fair value, without maturity	562,504
Less: allowance for credit losses	0	0
Amortized Cost
Amortized cost, without maturity	544,402
Estimated Fair Value
Estimated fair value, without maturity	485,566
Total investment securities held-to-maturity	485,566	519,963
Commercial mortgage-backed securities
Amortized Cost
Amortized cost, without maturity	68,931
Estimated Fair Value
Estimated fair value, without maturity	66,545
Less: allowance for credit losses	0	0
Amortized Cost
Amortized cost, without maturity	85,760
Estimated Fair Value
Estimated fair value, without maturity	75,973
Total investment securities held-to-maturity	$ 75,973	$ 75,506