Loans Receivable, Net - Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Collateral Dependent Loans
Total	$ 17,218,518	$ 17,261,849
Collateral Pledged
Collateral Dependent Loans
Total	54,116	48,979
Business assets
Collateral Dependent Loans
Total	12,402	11,483
Residential real estate
Collateral Dependent Loans
Total	14,559	14,425
Other real estate
Collateral Dependent Loans
Total	26,015	22,016
Other
Collateral Dependent Loans
Total	1,140	1,055
Residential real estate
Collateral Dependent Loans
Total	1,850,079	1,858,929
Residential real estate | Collateral Pledged
Collateral Dependent Loans
Total	6,277	6,925
Residential real estate | Business assets
Collateral Dependent Loans
Total	0	0
Residential real estate | Residential real estate
Collateral Dependent Loans
Total	6,277	6,924
Residential real estate | Other real estate
Collateral Dependent Loans
Total	0	1
Residential real estate | Other
Collateral Dependent Loans
Total	0	0
Commercial real estate
Collateral Dependent Loans
Total	10,952,809	10,963,713
Commercial real estate | Collateral Pledged
Collateral Dependent Loans
Total	30,340	25,173
Commercial real estate | Business assets
Collateral Dependent Loans
Total	0	0
Commercial real estate | Residential real estate
Collateral Dependent Loans
Total	4,905	4,107
Commercial real estate | Other real estate
Collateral Dependent Loans
Total	25,435	21,066
Commercial real estate | Other
Collateral Dependent Loans
Total	0	0
Other commercial
Collateral Dependent Loans
Total	3,121,477	3,119,535
Other commercial | Collateral Pledged
Collateral Dependent Loans
Total	13,464	12,932
Other commercial | Business assets
Collateral Dependent Loans
Total	12,402	11,480
Other commercial | Residential real estate
Collateral Dependent Loans
Total	523	508
Other commercial | Other real estate
Collateral Dependent Loans
Total	170	561
Other commercial | Other
Collateral Dependent Loans
Total	369	383
Home equity
Collateral Dependent Loans
Total	920,132	930,994
Home equity | Collateral Pledged
Collateral Dependent Loans
Total	2,699	2,826
Home equity | Business assets
Collateral Dependent Loans
Total	0	0
Home equity | Residential real estate
Collateral Dependent Loans
Total	2,681	2,808
Home equity | Other real estate
Collateral Dependent Loans
Total	18	18
Home equity | Other
Collateral Dependent Loans
Total	0	0
Other consumer
Collateral Dependent Loans
Total	374,021	388,678
Other consumer | Collateral Pledged
Collateral Dependent Loans
Total	1,336	1,123
Other consumer | Business assets
Collateral Dependent Loans
Total	0	3
Other consumer | Residential real estate
Collateral Dependent Loans
Total	173	78
Other consumer | Other real estate
Collateral Dependent Loans
Total	392	370
Other consumer | Other
Collateral Dependent Loans
Total	$ 771	$ 672