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LOANS AND LEASES - Commercial and Consumer Credit Exposure by Risk Attribute (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 9,591,884 $ 9,302,798
Loans and Leases Receivable, Net of Deferred Income 11,205,120 10,933,176
Gross loans and leases, excluding accrued interest 11,205,120 10,933,176
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 11,137 40,315
Financing Receivable Allowance For Credit Losses Write Offs Revolving 794 1,173
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 10,343 39,142
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 5,918 4,304
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 893 1,143
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 725 11,883
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 2,332 15,467
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 475 6,167
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 178
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 2,367,667 2,275,641
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,302,178 2,255,789
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,431,342 1,477,690
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 908,295 951,457
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,221,521 935,194
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 360,881 1,407,027
Financing Receivable, Excluding Accrued Interest, Revolving 1,613,236 1,630,378
Commercial    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 2,695 19,175
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 2,695  
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 1,333 929
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 65 936
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 82 7,055
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 1,046 7,267
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 169 2,978
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 10
Credit card    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 794 1,173
Financing Receivable Allowance For Credit Losses Write Offs Revolving 794 1,173
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Installment    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 2,236 6,442
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 2,236 6,442
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 30 23
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 40 5
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 624 154
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 1,261 2,903
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 281 3,189
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 168
Home Equity Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Net of Deferred Income 4,036 3,476
Home equity    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 25 340
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 25 340
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 0 159
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 0 174
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 0 7
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 25 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Residential Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Net of Deferred Income 12,836 14,067
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 65 39
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 65 39
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 24 3
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 0 27
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 16 1
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 25 8
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Commercial real estate-owner    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 0 2,715
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 0 2,715
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 0 71
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 0 1
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 0 2,643
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Commercial real estate - investor    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Net of Deferred Income 17,365 22,694
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 5,319 6,008
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 5,319 6,008
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 4,531 3,119
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 788 0
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 0 2,030
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 0 859
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Construction real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 0  
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Lease financing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Net of Deferred Income 3,794 3,610
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year Including Revolving 3 4,423
Financing Receivable Allowance For Credit Losses Write Offs Revolving 0 0
Financing Receivable Allowance For Credit Losses Write Offs By Origination Year 3 4,423
Financing Receivable Allowance For Credit Losses Write Offs in Five or More Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Four Years Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs Three Years Before Latest Fiscal Year 3 0
Financing Receivable Allowance For Credit Losses Write Offs Two Years Before Latest Fiscal Year 0 4,423
Financing Receivable Allowance For Credit Losses Write Offs In Fiscal Year Before Latest Fiscal Year 0 0
Financing Receivable Allowance For Credit Losses Write Offs In Current Fiscal Year 0 0
Commercial    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 2,789,549 2,692,982
Loans and Leases Receivable, Net of Deferred Income 3,591,428 3,501,221
Gross loans and leases, excluding accrued interest 3,591,428 3,501,221
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 856,060 851,581
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 848,395 771,091
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 397,902 430,913
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 251,745 267,230
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 337,875 133,879
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 97,572 238,288
Financing Receivable, Excluding Accrued Interest, Revolving 801,879 808,239
Commercial | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 2,705,328 2,604,530
Gross loans and leases, excluding accrued interest 3,468,869 3,378,610
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 851,420 848,448
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 813,714 736,213
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 381,849 414,460
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 250,566 265,143
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 310,397 113,296
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 97,382 226,970
Financing Receivable, Excluding Accrued Interest, Revolving 763,541 774,080
Commercial | Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 30,328 40,113
Gross loans and leases, excluding accrued interest 40,521 48,995
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,428 0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 11,177 13,373
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 810 4,970
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 774 882
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 16,139 19,560
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 1,328
Financing Receivable, Excluding Accrued Interest, Revolving 10,193 8,882
Commercial | Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 53,893 48,339
Gross loans and leases, excluding accrued interest 82,038 73,616
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 3,212 3,133
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 23,504 21,505
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 15,243 11,483
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 405 1,205
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 11,339 1,023
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 190 9,990
Financing Receivable, Excluding Accrued Interest, Revolving 28,145 25,277
Commercial | Doubtful    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 0  
Gross loans and leases, excluding accrued interest 0  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Lease financing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 492,862 474,817
Loans and Leases Receivable, Net of Deferred Income 492,862 474,817
Gross loans and leases, excluding accrued interest 492,862 474,817
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 301,152 267,232
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 134,678 197,005
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 16,078 6,501
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 8,620 1,189
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 6,676 2,367
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 25,658 523
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Lease financing | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 476,925 458,399
Gross loans and leases, excluding accrued interest 476,925 458,399
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 296,467 261,064
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 126,286 186,997
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 15,991 6,404
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 8,620 1,189
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 3,903 2,222
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 25,658 523
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Lease financing | Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 12,143 12,808
Gross loans and leases, excluding accrued interest 12,143 12,808
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 4,515 4,761
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 7,628 8,047
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
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Lease financing | Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 3,794 3,610
Gross loans and leases, excluding accrued interest 3,794 3,610
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 170 1,407
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 764 1,961
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 87 97
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 2,773 145
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Construction real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 640,525 545,557
Loans and Leases Receivable, Net of Deferred Income 641,596 564,832
Gross loans and leases, excluding accrued interest 641,596 564,832
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 207,191 170,259
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 262,016 208,446
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 116,097 108,886
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 17,629 44,017
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 18,503 7,784
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 19,089 6,165
Financing Receivable, Excluding Accrued Interest, Revolving 1,071 19,275
Construction real estate | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 611,562 529,226
Gross loans and leases, excluding accrued interest 612,633 548,501
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 207,191 170,259
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 262,016 208,446
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 116,097 108,886
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,041 27,686
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 6,128 7,784
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 19,089 6,165
Financing Receivable, Excluding Accrued Interest, Revolving 1,071 19,275
Construction real estate | Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 28,963 16,331
Gross loans and leases, excluding accrued interest 28,963 16,331
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 16,588 16,331
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 12,375 0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Construction real estate | Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 0 0
Gross loans and leases, excluding accrued interest 0 0
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
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Commercial real estate - investor    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 3,170,013 3,098,961
Loans and Leases Receivable, Net of Deferred Income 3,200,152 3,138,629
Gross loans and leases, excluding accrued interest 3,200,152 3,138,629
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 475,608 476,473
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 604,340 604,768
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 466,738 485,459
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 264,548 268,142
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,206,443 587,649
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 152,336 676,470
Financing Receivable, Excluding Accrued Interest, Revolving 30,139 39,668
Commercial real estate - investor | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 3,063,692 2,990,612
Gross loans and leases, excluding accrued interest 3,093,831 3,030,280
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 475,608 468,579
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 593,740 595,423
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 457,647 473,325
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 258,943 261,794
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,125,418 554,893
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 152,336 636,598
Financing Receivable, Excluding Accrued Interest, Revolving 30,139 39,668
Commercial real estate - investor | Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 70,378 76,443
Gross loans and leases, excluding accrued interest 70,378 76,443
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 7,894
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 10,600 9,345
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 9,091 12,134
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 280 110
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 50,407 32,756
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 14,204
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Commercial real estate - investor | Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 35,943 31,906
Gross loans and leases, excluding accrued interest 35,943 31,906
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 5,325 6,238
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 30,618 0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 25,668
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Commercial real estate - investor | Doubtful    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 0  
Gross loans and leases, excluding accrued interest 0  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Commercial real estate-owner    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 925,232 919,671
Loans and Leases Receivable, Net of Deferred Income 945,817 942,310
Gross loans and leases, excluding accrued interest 945,817 942,310
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 138,580 139,328
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 173,395 175,381
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 131,680 134,338
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 140,932 142,157
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 306,658 87,968
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 33,987 240,499
Financing Receivable, Excluding Accrued Interest, Revolving 20,585 22,639
Commercial real estate-owner | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 887,617 885,067
Gross loans and leases, excluding accrued interest 908,202 907,706
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 138,580 138,932
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 173,395 175,336
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 122,326 130,240
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 138,745 138,919
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 280,584 86,182
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 33,987 215,458
Financing Receivable, Excluding Accrued Interest, Revolving 20,585 22,639
Commercial real estate-owner | Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 18,749 23,292
Gross loans and leases, excluding accrued interest 18,749 23,292
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 396
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 45
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,407 179
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 85 2,403
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 15,257 462
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 19,807
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Commercial real estate-owner | Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 18,866 11,312
Gross loans and leases, excluding accrued interest 18,866 11,312
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 5,947 3,919
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,102 835
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 10,817 1,324
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 5,234
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Commercial real estate-owner | Doubtful    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss   0
Gross loans and leases, excluding accrued interest   0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   0
Financing Receivable, Excluding Accrued Interest, Revolving   0
Residential Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 1,344,677 1,333,674
Loans and Leases Receivable, Net of Deferred Income 1,344,677 1,333,674
Gross loans and leases, excluding accrued interest 1,344,677 1,333,674
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 347,245 325,547
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 221,267 235,500
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 254,813 258,548
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 189,462 191,708
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 310,162 103,823
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 21,728 218,548
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Residential Portfolio Segment [Member] | Performing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 1,328,709 1,316,309
Gross loans and leases, excluding accrued interest 1,328,709 1,316,309
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 347,008 325,304
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 220,697 234,583
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 251,735 255,964
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 185,921 188,212
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 301,620 101,663
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 21,728 210,583
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Residential Portfolio Segment [Member] | Nonperforming    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 15,968 17,365
Gross loans and leases, excluding accrued interest 15,968 17,365
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 237 243
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 570 917
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,078 2,584
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,541 3,496
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 8,542 2,160
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 7,965
Financing Receivable, Excluding Accrued Interest, Revolving 0 0
Home equity    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 148,099 147,421
Loans and Leases Receivable, Net of Deferred Income 773,811 758,676
Gross loans and leases, excluding accrued interest 773,811 758,676
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 28,026 28,999
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 22,530 23,244
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 28,510 29,342
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 32,021 33,079
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 30,306 10,021
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,706 22,736
Financing Receivable, Excluding Accrued Interest, Revolving 625,712 611,255
Home equity | Performing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 147,238 146,457
Gross loans and leases, excluding accrued interest 767,070 752,640
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 28,006 28,979
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 22,443 23,175
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 28,145 29,084
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 31,994 32,917
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 29,944 9,883
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,706 22,419
Financing Receivable, Excluding Accrued Interest, Revolving 619,832 606,183
Home equity | Nonperforming    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 861 964
Gross loans and leases, excluding accrued interest 6,741 6,036
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 20 20
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 87 69
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 365 258
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 27 162
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 362 138
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 317
Financing Receivable, Excluding Accrued Interest, Revolving 5,880 5,072
Installment    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 80,927 89,715
Loans and Leases Receivable, Net of Deferred Income 153,838 159,078
Gross loans and leases, excluding accrued interest 153,838 159,078
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 13,805 16,222
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 35,557 40,354
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 19,524 23,703
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,338 3,935
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 4,898 1,703
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,805 3,798
Financing Receivable, Excluding Accrued Interest, Revolving 72,911 69,363
Installment | Performing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 79,048 87,581
Gross loans and leases, excluding accrued interest 151,338 156,254
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 13,676 16,026
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 34,337 39,212
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 19,054 22,961
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,315 3,923
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 4,887 1,691
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,779 3,768
Financing Receivable, Excluding Accrued Interest, Revolving 72,290 68,673
Installment | Nonperforming    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 1,879 2,134
Gross loans and leases, excluding accrued interest 2,500 2,824
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 129 196
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,220 1,142
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 470 742
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 23 12
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 11 12
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 26 30
Financing Receivable, Excluding Accrued Interest, Revolving 621 690
Credit card    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 0 0
Loans and Leases Receivable, Net of Deferred Income 60,939 59,939
Gross loans and leases, excluding accrued interest 60,939 59,939
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
Financing Receivable, Excluding Accrued Interest, Revolving 60,939 59,939
Credit card | Performing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 0 0
Gross loans and leases, excluding accrued interest 60,737 59,438
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
Financing Receivable, Excluding Accrued Interest, Revolving 60,737 59,438
Credit card | Nonperforming    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, before Allowance for Credit Loss 0 0
Gross loans and leases, excluding accrued interest 202 501
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
Financing Receivable, Excluding Accrued Interest, Revolving $ 202 $ 501