v3.26.1
Allowance for Credit Losses - Schedule of the Recorded Investments by Credit Quality Indicator, by Loan Class (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Credit Quality Information      
Total $ 17,924,156   $ 18,029,552
Current-period gross writeoffs      
Total 15,880 $ 9,073  
Commercial Real Estate      
Credit Quality Information      
Year one 125,088   560,867
Year two 567,491   522,085
Year three 499,935   770,640
Year four 818,994   1,476,037
Year five 1,350,000   1,195,207
Prior 3,668,771   2,646,584
Revolving Loans 143,342   48,646
Revolving Loans Converted to Term Loans 14,114   15,331
Total 7,187,735   7,235,397
Current-period gross writeoffs      
Year one 0   0
Year two 0   569
Year three 182   18
Year four 68   4,641
Year five 184   0
Prior 6,923   3,458
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 7,357   8,686
Commercial Real Estate | Pass      
Credit Quality Information      
Year one 125,088   546,268
Year two 567,059   496,486
Year three 496,402   713,257
Year four 763,816   1,377,041
Year five 1,227,243   1,144,463
Prior 3,443,673   2,524,605
Revolving Loans 117,841   45,663
Revolving Loans Converted to Term Loans 14,114   14,944
Total 6,755,236   6,862,727
Commercial Real Estate | OAEM      
Credit Quality Information      
Year one 0   14,599
Year two 150   732
Year three 1,351   53,420
Year four 47,280   42,680
Year five 49,667   43,317
Prior 132,845   37,747
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   387
Total 231,293   192,882
Commercial Real Estate | Substandard      
Credit Quality Information      
Year one 0   0
Year two 282   24,867
Year three 2,182   3,963
Year four 7,898   56,316
Year five 73,090   7,427
Prior 92,253   84,232
Revolving Loans 25,501   2,983
Revolving Loans Converted to Term Loans 0   0
Total 201,206   179,788
Multi-Family Mortgage      
Credit Quality Information      
Year one 11,944   165,979
Year two 179,976   110,718
Year three 154,443   114,175
Year four 124,696   632,362
Year five 590,279   290,275
Prior 1,040,510   833,938
Revolving Loans 42,492   4,551
Revolving Loans Converted to Term Loans 3,957   3,982
Total 2,148,297   2,155,980
Current-period gross writeoffs      
Year one 0   0
Year two 0   0
Year three 0   0
Year four 0   0
Year five 0   0
Prior 0   2,332
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 0   2,332
Multi-Family Mortgage | Pass      
Credit Quality Information      
Year one 11,944   165,979
Year two 179,976   110,718
Year three 154,443   113,109
Year four 123,632   618,623
Year five 546,451   278,798
Prior 1,025,065   811,649
Revolving Loans 42,492   4,551
Revolving Loans Converted to Term Loans 3,957   3,982
Total 2,087,960   2,107,409
Multi-Family Mortgage | OAEM      
Credit Quality Information      
Year one 0   0
Year two 0   0
Year three 0   0
Year four 0   10,876
Year five 43,828   0
Prior 0   0
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 43,828   10,876
Multi-Family Mortgage | Substandard      
Credit Quality Information      
Year one 0   0
Year two 0   0
Year three 0   1,066
Year four 1,064   2,863
Year five 0   11,477
Prior 15,445   22,289
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 16,509   37,695
Construction      
Credit Quality Information      
Year one 6,236   159,217
Year two 182,777   148,651
Year three 115,698   145,038
Year four 146,417   147,353
Year five 146,385   16,938
Prior 19,941   332
Revolving Loans 3,922   3,188
Revolving Loans Converted to Term Loans 0   0
Total 621,376   620,717
Construction | Pass      
Credit Quality Information      
Year one 6,236   159,217
Year two 182,777   148,651
Year three 115,698   145,038
Year four 146,417   87,874
Year five 52,600   16,938
Prior 19,941   332
Revolving Loans 3,922   3,188
Revolving Loans Converted to Term Loans 0   0
Total 527,591   561,238
Construction | OAEM      
Credit Quality Information      
Year one 0   0
Year two 0   0
Year three 0   0
Year four 0   37,689
Year five 22,750   0
Prior 0   0
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 22,750   37,689
Construction | Substandard      
Credit Quality Information      
Year one 0   0
Year two 0   0
Year three 0   0
Year four 0   21,790
Year five 71,035   0
Prior 0   0
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 71,035   21,790
Commercial      
Credit Quality Information      
Year one 130,715   314,833
Year two 307,421   311,921
Year three 319,890   316,699
Year four 305,992   187,017
Year five 199,599   182,934
Prior 327,249   190,315
Revolving Loans 1,320,295   1,266,606
Revolving Loans Converted to Term Loans 27,308   13,827
Total 2,938,469   2,784,152
Current-period gross writeoffs      
Year one 0   0
Year two 138   1,082
Year three 1,567   210
Year four 548   5,199
Year five 396   106
Prior 3,401   7,353
Revolving Loans 0   1,467
Revolving Loans Converted to Term Loans 0   0
Total 6,050   15,417
Commercial | Pass      
Credit Quality Information      
Year one 130,715   314,833
Year two 299,457   302,916
Year three 310,326   311,533
Year four 301,784   162,007
Year five 177,165   177,421
Prior 308,222   174,533
Revolving Loans 1,238,146   1,180,768
Revolving Loans Converted to Term Loans 26,212   12,790
Total 2,792,027   2,636,801
Commercial | OAEM      
Credit Quality Information      
Year one 0   0
Year two 7,840   774
Year three 758   236
Year four 421   20,727
Year five 18,065   135
Prior 3,835   4,361
Revolving Loans 18,640   35,864
Revolving Loans Converted to Term Loans 318   339
Total 49,877   62,436
Commercial | Substandard      
Credit Quality Information      
Year one 0   0
Year two 124   8,231
Year three 8,806   4,746
Year four 3,603   4,283
Year five 4,369   5,378
Prior 15,192   11,421
Revolving Loans 63,509   49,974
Revolving Loans Converted to Term Loans 778   698
Total 96,381   84,731
Commercial | Doubtful      
Credit Quality Information      
Year one 0   0
Year two 0   0
Year three 0   184
Year four 184   0
Year five 0   0
Prior 0   0
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 184   184
Equipment Financing      
Credit Quality Information      
Year one 36,816   196,497
Year two 193,842   245,759
Year three 231,051   277,429
Year four 230,528   221,715
Year five 187,316   97,470
Prior 178,030   105,490
Revolving Loans 2,537   2,951
Revolving Loans Converted to Term Loans 13,385   15,900
Total 1,073,505   1,163,211
Current-period gross writeoffs      
Year one 0   0
Year two 0   870
Year three 0   6,421
Year four 48   5,263
Year five 0   1,097
Prior 2,336   1,966
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 2,384   15,617
Equipment Financing | Pass      
Credit Quality Information      
Year one 27,558   196,359
Year two 193,120   241,981
Year three 227,296   265,403
Year four 222,328   210,829
Year five 177,510   94,341
Prior 171,113   101,526
Revolving Loans 2,537   2,951
Revolving Loans Converted to Term Loans 4,152   4,359
Total 1,025,614   1,117,749
Equipment Financing | OAEM      
Credit Quality Information      
Year one 9,258   0
Year two 722   0
Year three 3,755   0
Year four 8,200   878
Year five 7,888   597
Prior 6,917   0
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 9,233   0
Total 45,973   1,475
Equipment Financing | Substandard      
Credit Quality Information      
Year one 0   138
Year two 0   3,778
Year three 0   12,026
Year four 0   8,090
Year five 1,918   2,532
Prior 0   3,959
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   11,541
Total 1,918   42,064
Equipment Financing | Doubtful      
Credit Quality Information      
Year one     0
Year two     0
Year three     0
Year four     1,918
Year five     0
Prior     5
Revolving Loans     0
Revolving Loans Converted to Term Loans     0
Total     1,923
Residential      
Credit Quality Information      
Year one 43,751   352,224
Year two 326,374   357,571
Year three 348,321   537,466
Year four 516,620   691,595
Year five 680,195   283,791
Prior 1,247,588   1,007,770
Revolving Loans 4,700   3,008
Revolving Loans Converted to Term Loans 0   0
Total 3,167,549   3,233,425
Current-period gross writeoffs      
Year one 0   0
Year two 0   0
Year three 0   0
Year four 0   0
Year five 0   0
Prior 0   1
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total 0   1
Residential | Over 700      
Credit Quality Information      
Year one     311,693
Year two     330,183
Year three     497,233
Year four     542,388
Year five     250,604
Prior     746,295
Revolving Loans     3,000
Revolving Loans Converted to Term Loans     0
Total     2,681,396
Residential | 661 - 700      
Credit Quality Information      
Year one     10,890
Year two     15,515
Year three     23,976
Year four     30,852
Year five     15,805
Prior     74,101
Revolving Loans     8
Revolving Loans Converted to Term Loans     0
Total     171,147
Residential | 600 and below      
Credit Quality Information      
Year one     4,983
Year two     8,539
Year three     10,528
Year four     15,014
Year five     11,306
Prior     43,250
Revolving Loans     0
Revolving Loans Converted to Term Loans     0
Total     93,620
Residential | Data not available      
Credit Quality Information      
Year one     24,658
Year two     3,334
Year three     5,729
Year four     103,341
Year five     6,076
Prior     144,124
Revolving Loans     0
Revolving Loans Converted to Term Loans     0
Total     287,262
Residential | Pass      
Credit Quality Information      
Year one 43,751    
Year two 326,374    
Year three 348,321    
Year four 516,620    
Year five 679,753    
Prior 1,235,901    
Revolving Loans 4,700    
Revolving Loans Converted to Term Loans 0    
Total 3,155,420    
Residential | OAEM      
Credit Quality Information      
Year one 0    
Year two 0    
Year three 0    
Year four 0    
Year five 0    
Prior 1,624    
Revolving Loans 0    
Revolving Loans Converted to Term Loans 0    
Total 1,624    
Residential | Substandard      
Credit Quality Information      
Year one 0    
Year two 0    
Year three 0    
Year four 0    
Year five 442    
Prior 10,063    
Revolving Loans 0    
Revolving Loans Converted to Term Loans 0    
Total 10,505    
Home Equity      
Credit Quality Information      
Year one 4,385   5,383
Year two 2,041   2,022
Year three 1,965   7,570
Year four 7,277   7,777
Year five 7,419   7,412
Prior 34,649   29,416
Revolving Loans 591,552   628,352
Revolving Loans Converted to Term Loans 6,949   7,375
Total 656,237   695,307
Current-period gross writeoffs      
Year one 0   0
Year two 0   0
Year three 0   0
Year four 0   0
Year five 0   0
Prior 0   0
Revolving Loans 0   64
Revolving Loans Converted to Term Loans 0   0
Total 0   64
Home Equity | Over 700      
Credit Quality Information      
Year one     5,286
Year two     1,882
Year three     6,714
Year four     7,087
Year five     7,111
Prior     26,203
Revolving Loans     542,324
Revolving Loans Converted to Term Loans     3,737
Total     600,344
Home Equity | 661 - 700      
Credit Quality Information      
Year one     0
Year two     23
Year three     54
Year four     559
Year five     177
Prior     2,211
Revolving Loans     55,752
Revolving Loans Converted to Term Loans     986
Total     59,762
Home Equity | 600 and below      
Credit Quality Information      
Year one     95
Year two     117
Year three     789
Year four     131
Year five     124
Prior     952
Revolving Loans     27,538
Revolving Loans Converted to Term Loans     2,652
Total     32,398
Home Equity | Data not available      
Credit Quality Information      
Year one     2
Year two     0
Year three     13
Year four     0
Year five     0
Prior     50
Revolving Loans     2,738
Revolving Loans Converted to Term Loans     0
Total     2,803
Home Equity | Pass      
Credit Quality Information      
Year one 4,367    
Year two 2,000    
Year three 1,936    
Year four 7,072    
Year five 7,419    
Prior 34,354    
Revolving Loans 588,235    
Revolving Loans Converted to Term Loans 6,552    
Total 651,935    
Home Equity | OAEM      
Credit Quality Information      
Year one 0    
Year two 0    
Year three 0    
Year four 0    
Year five 0    
Prior 27    
Revolving Loans 356    
Revolving Loans Converted to Term Loans 0    
Total 383    
Home Equity | Substandard      
Credit Quality Information      
Year one 18    
Year two 41    
Year three 29    
Year four 205    
Year five 0    
Prior 268    
Revolving Loans 2,961    
Revolving Loans Converted to Term Loans 397    
Total 3,919    
Other Consumer      
Credit Quality Information      
Year one 3,940   10,748
Year two 8,053   19,594
Year three 18,037   19,616
Year four 17,478   7,843
Year five 6,822   3,317
Prior 6,677   4,278
Revolving Loans 69,973   75,953
Revolving Loans Converted to Term Loans 8   14
Total 130,988   141,363
Current-period gross writeoffs      
Year one 0   27
Year two 9   14
Year three 38   11
Year four 18   1
Year five 8   0
Prior 15   19
Revolving Loans 0   62
Revolving Loans Converted to Term Loans 0   0
Total 88   134
Other Consumer | Pass      
Credit Quality Information      
Year one 3,940   10,735
Year two 8,027   19,553
Year three 18,015   19,614
Year four 17,430   7,792
Year five 6,804   3,311
Prior 6,636   4,270
Revolving Loans 69,886   75,916
Revolving Loans Converted to Term Loans 8   14
Total 130,746   141,205
Other Consumer | OAEM      
Credit Quality Information      
Year one 0   12
Year two 7   0
Year three 2   0
Year four 23   5
Year five 1   0
Prior 0   1
Revolving Loans 3   5
Revolving Loans Converted to Term Loans 0   0
Total 36   23
Other Consumer | Substandard      
Credit Quality Information      
Year one 0   1
Year two 19   41
Year three 20   2
Year four 25   46
Year five 17   6
Prior 41   7
Revolving Loans 84   32
Revolving Loans Converted to Term Loans 0   0
Total 206   135
Total      
Credit Quality Information      
Year one 362,875   1,408,141
Year two 1,767,975   1,358,728
Year three 1,689,340   1,643,597
Year four 2,168,002   2,672,327
Year five 3,168,015   1,786,141
Prior 6,523,415   3,780,937
Revolving Loans 2,178,813   1,401,895
Revolving Loans Converted to Term Loans 65,721   49,054
Total 17,924,156   14,100,820
Total | Pass      
Credit Quality Information      
Year one 353,599   1,393,391
Year two 1,758,790   1,320,305
Year three 1,672,437   1,567,954
Year four 2,099,099   2,464,166
Year five 2,874,945   1,715,272
Prior 6,244,905   3,616,915
Revolving Loans 2,067,759   1,313,037
Revolving Loans Converted to Term Loans 54,995   36,089
Total 17,126,529   13,427,129
Total | OAEM      
Credit Quality Information      
Year one 9,258   14,611
Year two 8,719   1,506
Year three 5,866   53,656
Year four 55,924   112,855
Year five 142,199   44,049
Prior 145,248   42,109
Revolving Loans 18,999   35,869
Revolving Loans Converted to Term Loans 9,551   726
Total 395,764   305,381
Total | Substandard      
Credit Quality Information      
Year one 18   139
Year two 466   36,917
Year three 11,037   21,803
Year four 12,795   93,388
Year five 150,871   26,820
Prior 133,262   121,908
Revolving Loans 92,055   52,989
Revolving Loans Converted to Term Loans 1,175   12,239
Total 401,679   366,203
Total | Doubtful      
Credit Quality Information      
Year one 0   0
Year two 0   0
Year three 0   184
Year four 184   1,918
Year five 0   0
Prior 0   5
Revolving Loans 0   0
Revolving Loans Converted to Term Loans 0   0
Total $ 184   $ 2,107