v3.25.2
Loans and Allowance for Credit Losses on Loans - Loans by Investment Grade (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year $ 1,150,823   $ 2,305,541
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 2,212,681   2,161,134
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 2,087,713   3,438,876
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 3,175,423   1,314,739
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 1,144,568   334,555
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 1,056,112   1,055,959
Revolving lines of credit 13,154,960   11,901,022
Revolving lines of credit converted to term loans 43,914   30,997
Total 24,026,194   22,542,823
Financing receivable, excluding accrued interest, year one, originated, current fiscal year, writeoff 0   994
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year, writeoff 259   7,543
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year, writeoff 116   550
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year, writeoff 4,451   4,037
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year, writeoff 28   537
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year, writeoff 858   8,784
Revolving lines of credit, writeoff 18,436   23,566
Revolving line of credit converted to term loans, writeoff 0   44
Financing receivable, excluding accrued interest, allowance for credit loss, writeoff 24,148 $ 22,977 46,055
Commercial      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 773,234   1,636,271
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 1,483,177   1,238,889
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 1,105,416   1,450,224
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 1,204,055   337,071
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 307,619   77,512
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 221,091   203,360
Revolving lines of credit 6,805,606   6,190,224
Revolving lines of credit converted to term loans 30,470   12,040
Total 11,930,668   11,145,591
Financing receivable, excluding accrued interest, allowance for credit loss, writeoff 23,217 17,541  
Commercial | Pass      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 750,086   1,612,695
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 1,440,357   1,156,414
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 1,018,302   1,256,539
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 1,048,253   307,590
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 263,885   76,821
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 196,156   169,974
Revolving lines of credit 6,689,345   6,027,177
Revolving lines of credit converted to term loans 30,470   12,040
Total 11,436,854   10,619,250
Commercial | Special mention      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 1,380   22,953
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 32,844   28,354
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 19,174   134,092
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 112,767   21,626
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 6,576   30
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 5,120   6,369
Revolving lines of credit 41,666   91,423
Revolving lines of credit converted to term loans 0   0
Total 219,527   304,847
Commercial | Substandard - accruing      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 188   623
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 9,531   44,901
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 59,314   51,536
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 14,722   7,855
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 37,158   301
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 7,437   3,309
Revolving lines of credit 55,580   37,405
Revolving lines of credit converted to term loans 0   0
Total 183,930   145,930
Commercial | Non-accrual      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 21,580   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 445   9,220
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 8,626   8,057
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 28,313   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   360
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 12,378   23,708
Revolving lines of credit 19,015   34,219
Revolving lines of credit converted to term loans 0   0
Total 90,357   75,564
Mortgage finance      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 5,889,589   5,215,574
Revolving lines of credit converted to term loans 0   0
Total 5,889,589   5,215,574
Financing receivable, excluding accrued interest, allowance for credit loss, writeoff 0 0  
Mortgage finance | Pass      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 5,889,589   5,215,574
Revolving lines of credit converted to term loans 0   0
Total 5,889,589   5,215,574
Mortgage finance | Special mention      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 0   0
Total 0   0
Mortgage finance | Substandard - accruing      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 0   0
Total 0   0
Mortgage finance | Non-accrual      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 0   0
Total 0   0
Commercial real estate      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 357,920   624,918
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 687,712   893,956
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 952,591   1,934,504
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 1,918,247   901,744
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 762,803   216,376
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 716,872   752,164
Revolving lines of credit 255,511   273,663
Revolving lines of credit converted to term loans 13,444   18,957
Total 5,665,100   5,616,282
Financing receivable, excluding accrued interest, allowance for credit loss, writeoff 931 5,436  
Commercial real estate | Pass      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 357,920   599,301
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 662,180   889,603
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 943,876   1,843,706
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 1,836,390   885,913
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 743,688   216,077
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 714,679   704,288
Revolving lines of credit 255,511   273,663
Revolving lines of credit converted to term loans 12,625   18,085
Total 5,526,869   5,430,636
Commercial real estate | Special mention      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   25,532
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 25,532   4,353
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 5,681   70,161
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 61,943   15,831
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 19,115   299
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 1,889   13,731
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 819   872
Total 114,979   130,779
Commercial real estate | Substandard - accruing      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   20,230
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 0   0
Total 0   20,230
Commercial real estate | Non-accrual      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   85
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 3,034   20,637
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 19,914   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 304   13,915
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 0   0
Total 23,252   34,637
Consumer      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 19,669   44,352
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 41,792   28,289
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 29,706   54,148
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 53,121   75,924
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 74,146   40,667
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 118,149   100,435
Revolving lines of credit 204,254   221,561
Revolving lines of credit converted to term loans 0   0
Total 540,837   565,376
Financing receivable, excluding accrued interest, allowance for credit loss, writeoff 0 $ 0  
Consumer | Pass      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 19,669   44,352
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 39,075   28,289
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 29,706   54,148
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 53,121   75,924
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 74,146   40,667
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 118,149   99,471
Revolving lines of credit 201,554   220,561
Revolving lines of credit converted to term loans 0   0
Total 535,420   563,412
Consumer | Special mention      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 2,717   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 2,700   0
Revolving lines of credit converted to term loans 0   0
Total 5,417   0
Consumer | Substandard - accruing      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   0
Revolving lines of credit 0   1,000
Revolving lines of credit converted to term loans 0   0
Total 0   1,000
Consumer | Non-accrual      
Financing Receivable, Recorded Investment [Line Items]      
Financing receivable, excluding accrued interest, year one, originated, current fiscal year 0   0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year 0   0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year 0   0
Financing receivable, excluding accrued interest, originated, more than five years before current fiscal year 0   964
Revolving lines of credit 0   0
Revolving lines of credit converted to term loans 0   0
Total $ 0   $ 964