Loans Receivable and Allowance for Credit Losses (Summary of Loans Receivable by Credit Quality Risk Rating Indicator-Prior Year) (Details) - USD ($)
$ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
$ 630,595
|
$ 2,927,998
|
| 2024 |
2,857,744
|
1,651,337
|
| 2023 |
1,728,086
|
2,224,929
|
| 2022 |
2,117,116
|
3,243,133
|
| 2021 |
3,083,639
|
2,001,939
|
| Prior to 2021 |
7,333,920
|
5,686,689
|
| Revolving Loans |
1,826,096
|
1,691,284
|
| Revolving loans to term loans |
81,611
|
88,204
|
| Total gross loans |
19,658,807
|
19,515,513
|
| Total criticized and classified |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
25,605
|
19,268
|
| 2024 |
17,554
|
12,955
|
| 2023 |
8,369
|
47,548
|
| 2022 |
47,566
|
172,607
|
| 2021 |
185,712
|
125,560
|
| Prior to 2021 |
333,941
|
209,674
|
| Revolving Loans |
44,939
|
59,733
|
| Revolving loans to term loans |
3,529
|
3,472
|
| Total gross loans |
667,215
|
650,817
|
| Special mention |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
17,510
|
7,018
|
| 2024 |
8,306
|
423
|
| 2023 |
1,063
|
34,942
|
| 2022 |
13,171
|
112,953
|
| 2021 |
64,695
|
74,136
|
| Prior to 2021 |
152,820
|
70,652
|
| Revolving Loans |
15,171
|
21,526
|
| Revolving loans to term loans |
2,085
|
1,939
|
| Total gross loans |
274,821
|
323,589
|
| Substandard |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
8,095
|
12,250
|
| 2024 |
9,248
|
12,532
|
| 2023 |
7,306
|
12,606
|
| 2022 |
34,395
|
59,654
|
| 2021 |
121,017
|
51,424
|
| Prior to 2021 |
181,121
|
139,022
|
| Revolving Loans |
29,768
|
38,207
|
| Revolving loans to term loans |
1,444
|
1,533
|
| Total gross loans |
392,394
|
327,228
|
| Doubtful |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Loss |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Pass/Watch |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
604,990
|
2,908,730
|
| 2024 |
2,840,190
|
1,638,382
|
| 2023 |
1,719,717
|
2,177,381
|
| 2022 |
2,069,550
|
3,070,526
|
| 2021 |
2,897,927
|
1,876,379
|
| Prior to 2021 |
6,999,979
|
5,477,015
|
| Revolving Loans |
1,781,157
|
1,631,551
|
| Revolving loans to term loans |
78,082
|
84,732
|
| Total gross loans |
18,991,592
|
18,864,696
|
| Commercial |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
179,870
|
917,773
|
| 2024 |
916,257
|
336,732
|
| 2023 |
448,959
|
1,449,216
|
| 2022 |
851,309
|
951,729
|
| 2021 |
1,360,965
|
2,724,348
|
| Prior to 2021 |
3,491,212
|
2,184,041
|
| Revolving Loans |
166,254
|
157,466
|
| Revolving loans to term loans |
8,826
|
8,896
|
| Total gross loans |
7,423,652
|
7,398,792
|
| Commercial | Total criticized and classified |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
15,882
|
| 2024 |
12,787
|
0
|
| 2023 |
0
|
1,606
|
| 2022 |
1,592
|
39,758
|
| 2021 |
37,089
|
63,680
|
| Prior to 2021 |
157,542
|
94,082
|
| Revolving Loans |
751
|
1,251
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
209,761
|
216,259
|
| Commercial | Special mention |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
6,013
|
| 2024 |
7,014
|
0
|
| 2023 |
0
|
1,549
|
| 2022 |
1,541
|
39,287
|
| 2021 |
31,738
|
47,805
|
| Prior to 2021 |
92,019
|
33,971
|
| Revolving Loans |
3
|
503
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
132,315
|
129,128
|
| Commercial | Substandard |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
9,869
|
| 2024 |
5,773
|
0
|
| 2023 |
0
|
57
|
| 2022 |
51
|
471
|
| 2021 |
5,351
|
15,875
|
| Prior to 2021 |
65,523
|
60,111
|
| Revolving Loans |
748
|
748
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
77,446
|
87,131
|
| Commercial | Doubtful |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Commercial | Loss |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Commercial | Pass/Watch |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
179,870
|
901,891
|
| 2024 |
903,470
|
336,732
|
| 2023 |
448,959
|
851,026
|
| 2022 |
849,717
|
1,409,458
|
| 2021 |
1,323,876
|
888,049
|
| Prior to 2021 |
3,333,670
|
2,630,266
|
| Revolving Loans |
165,503
|
156,215
|
| Revolving loans to term loans |
8,826
|
8,896
|
| Total gross loans |
7,213,891
|
7,182,533
|
| Construction |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
39,536
|
150,350
|
| 2024 |
188,197
|
206,323
|
| 2023 |
205,066
|
177,254
|
| 2022 |
106,339
|
107,974
|
| 2021 |
83,702
|
20,211
|
| Prior to 2021 |
18,089
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
640,929
|
662,112
|
| Construction | Total criticized and classified |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
15,496
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
14,497
|
| 2022 |
0
|
6,639
|
| 2021 |
6,639
|
5,177
|
| Prior to 2021 |
4,385
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
26,520
|
26,313
|
| Construction | Special mention |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
15,496
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
14,497
|
| 2022 |
0
|
6,639
|
| 2021 |
6,639
|
0
|
| Prior to 2021 |
1,089
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
23,224
|
21,136
|
| Construction | Substandard |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
5,177
|
| Prior to 2021 |
3,296
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
3,296
|
5,177
|
| Construction | Doubtful |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Construction | Loss |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Construction | Pass/Watch |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
24,040
|
150,350
|
| 2024 |
188,197
|
206,323
|
| 2023 |
205,066
|
162,757
|
| 2022 |
106,339
|
101,335
|
| 2021 |
77,063
|
15,034
|
| Prior to 2021 |
13,704
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
614,409
|
635,799
|
| Residential |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
18,849
|
145,286
|
| 2024 |
153,988
|
126,019
|
| 2023 |
122,931
|
306,329
|
| 2022 |
300,931
|
367,315
|
| 2021 |
361,711
|
288,355
|
| Prior to 2021 |
1,002,451
|
741,020
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
1,960,861
|
1,974,324
|
| Residential | Total criticized and classified |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
1,746
|
| 2023 |
1,731
|
3,209
|
| 2022 |
4,185
|
1,992
|
| 2021 |
2,127
|
1,288
|
| Prior to 2021 |
6,275
|
3,640
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
14,318
|
11,875
|
| Residential | Special mention |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
645
|
946
|
| 2022 |
835
|
582
|
| 2021 |
1,267
|
264
|
| Prior to 2021 |
3,799
|
1,845
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
6,546
|
3,637
|
| Residential | Substandard |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
1,746
|
| 2023 |
1,086
|
2,263
|
| 2022 |
3,350
|
1,410
|
| 2021 |
860
|
1,024
|
| Prior to 2021 |
2,476
|
1,795
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
7,772
|
8,238
|
| Residential | Doubtful |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Residential | Loss |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Residential | Pass/Watch |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
18,849
|
145,286
|
| 2024 |
153,988
|
124,273
|
| 2023 |
121,200
|
303,120
|
| 2022 |
296,746
|
365,323
|
| 2021 |
359,584
|
287,067
|
| Prior to 2021 |
996,176
|
737,380
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
1,946,543
|
1,962,449
|
| Mortgage loans |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
372,170
|
1,957,923
|
| 2024 |
1,989,038
|
985,472
|
| 2023 |
1,103,015
|
1,858,726
|
| 2022 |
1,795,643
|
2,549,689
|
| 2021 |
2,381,999
|
1,610,794
|
| Prior to 2021 |
5,916,859
|
4,556,837
|
| Revolving Loans |
180,626
|
172,716
|
| Revolving loans to term loans |
10,328
|
10,408
|
| Total gross loans |
13,749,678
|
13,702,565
|
| Mortgage loans | Total criticized and classified |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
15,496
|
15,882
|
| 2024 |
12,787
|
1,746
|
| 2023 |
1,731
|
19,312
|
| 2022 |
7,915
|
51,335
|
| 2021 |
48,820
|
70,145
|
| Prior to 2021 |
207,649
|
139,315
|
| Revolving Loans |
751
|
1,251
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
295,149
|
298,986
|
| Mortgage loans | Special mention |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
15,496
|
6,013
|
| 2024 |
7,014
|
0
|
| 2023 |
645
|
16,992
|
| 2022 |
4,514
|
49,454
|
| 2021 |
42,609
|
48,069
|
| Prior to 2021 |
96,907
|
35,816
|
| Revolving Loans |
3
|
503
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
167,188
|
156,847
|
| Mortgage loans | Substandard |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
9,869
|
| 2024 |
5,773
|
1,746
|
| 2023 |
1,086
|
2,320
|
| 2022 |
3,401
|
1,881
|
| 2021 |
6,211
|
22,076
|
| Prior to 2021 |
110,742
|
103,499
|
| Revolving Loans |
748
|
748
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
127,961
|
142,139
|
| Mortgage loans | Doubtful |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Mortgage loans | Loss |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Mortgage loans | Pass/Watch |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
356,674
|
1,942,041
|
| 2024 |
1,976,251
|
983,726
|
| 2023 |
1,101,284
|
1,839,414
|
| 2022 |
1,787,728
|
2,498,354
|
| 2021 |
2,333,179
|
1,540,649
|
| Prior to 2021 |
5,709,210
|
4,417,522
|
| Revolving Loans |
179,875
|
171,465
|
| Revolving loans to term loans |
10,328
|
10,408
|
| Total gross loans |
13,454,529
|
13,403,579
|
| Mortgage loans | Commercial |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| Total gross loans |
7,423,652
|
7,398,792
|
| Mortgage loans | Construction |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| Total gross loans |
640,929
|
662,112
|
| Mortgage loans | Residential |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| Total gross loans |
1,960,861
|
1,974,324
|
| Consumer loans |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
12,341
|
31,702
|
| 2024 |
27,894
|
26,407
|
| 2023 |
24,359
|
32,257
|
| 2022 |
30,952
|
45,663
|
| 2021 |
42,715
|
31,271
|
| Prior to 2021 |
110,492
|
88,076
|
| Revolving Loans |
341,453
|
340,492
|
| Revolving loans to term loans |
17,810
|
16,563
|
| Total gross loans |
608,016
|
612,431
|
| Consumer loans | Total criticized and classified |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
125
|
| 2023 |
73
|
101
|
| 2022 |
0
|
219
|
| 2021 |
207
|
0
|
| Prior to 2021 |
187
|
317
|
| Revolving Loans |
1,095
|
1,634
|
| Revolving loans to term loans |
263
|
69
|
| Total gross loans |
1,825
|
2,465
|
| Consumer loans | Special mention |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
20
|
| 2022 |
0
|
0
|
| 2021 |
83
|
0
|
| Prior to 2021 |
57
|
7
|
| Revolving Loans |
289
|
806
|
| Revolving loans to term loans |
262
|
23
|
| Total gross loans |
691
|
856
|
| Consumer loans | Substandard |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
125
|
| 2023 |
73
|
81
|
| 2022 |
0
|
219
|
| 2021 |
124
|
0
|
| Prior to 2021 |
130
|
310
|
| Revolving Loans |
806
|
828
|
| Revolving loans to term loans |
1
|
46
|
| Total gross loans |
1,134
|
1,609
|
| Consumer loans | Doubtful |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Consumer loans | Loss |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
0
|
0
|
| 2024 |
0
|
0
|
| 2023 |
0
|
0
|
| 2022 |
0
|
0
|
| 2021 |
0
|
0
|
| Prior to 2021 |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Revolving loans to term loans |
0
|
0
|
| Total gross loans |
0
|
0
|
| Consumer loans | Pass/Watch |
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
| 2025 |
12,341
|
31,702
|
| 2024 |
27,894
|
26,282
|
| 2023 |
24,286
|
32,156
|
| 2022 |
30,952
|
45,444
|
| 2021 |
42,508
|
31,271
|
| Prior to 2021 |
110,305
|
87,759
|
| Revolving Loans |
340,358
|
338,858
|
| Revolving loans to term loans |
17,547
|
16,494
|
| Total gross loans |
$ 606,191
|
$ 609,966
|