Loans, Credit Quality Indicator by Vintage Year (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 42,495
Financing Receivable, Revolving	3,087,058
Financing Receivable, Originated in Current Fiscal Year	5,587,409
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,477,639
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,637,599
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,265,196
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,968,437
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,980,415
Total	25,003,753
Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	112
Financing Receivable, Revolving	9,832
Financing Receivable, Originated in Current Fiscal Year	82,219
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	117,150
Financing Receivable, Originated Two Years before Latest Fiscal Year	86,344
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,017
Financing Receivable, Originated Four Years before Latest Fiscal Year	46,275
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,524
Total	363,361
Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	17,787
Financing Receivable, Revolving	3,060,738
Financing Receivable, Originated in Current Fiscal Year	5,441,532
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,256,737
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,433,706
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,177,524
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,868,608
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,877,164
Total	24,116,009
Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,089
Financing Receivable, Revolving	15,659
Financing Receivable, Originated in Current Fiscal Year	58,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	44,595
Financing Receivable, Originated Two Years before Latest Fiscal Year	94,850
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,793
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,724
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45,996
Total	292,794
Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	21,507
Financing Receivable, Revolving	829
Financing Receivable, Originated in Current Fiscal Year	5,482
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	59,157
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,698
Financing Receivable, Originated Three Years before Latest Fiscal Year	53,861
Financing Receivable, Originated Four Years before Latest Fiscal Year	39,830
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	49,731
Total	231,590
Oil and Gas Portfolio Segment [Member] | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	60,000
Oil and Gas Portfolio Segment [Member] | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	8,000
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	30,912
Financing Receivable, Revolving	2,309,277
Financing Receivable, Originated in Current Fiscal Year	3,988,275
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,838,112
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,923,428
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,121,672
Financing Receivable, Originated Four Years before Latest Fiscal Year	924,038
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	936,352
Total	16,041,154
Total commercial | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	9,424
Financing Receivable, Originated in Current Fiscal Year	81,534
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	117,150
Financing Receivable, Originated Two Years before Latest Fiscal Year	86,307
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,017
Financing Receivable, Originated Four Years before Latest Fiscal Year	46,272
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,758
Total	361,463
Total commercial | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,290
Financing Receivable, Revolving	2,285,626
Financing Receivable, Originated in Current Fiscal Year	3,846,490
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,621,580
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,725,863
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,042,603
Financing Receivable, Originated Four Years before Latest Fiscal Year	835,055
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	874,918
Total	15,232,134
Total commercial | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,089
Financing Receivable, Revolving	14,027
Financing Receivable, Originated in Current Fiscal Year	57,482
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	43,931
Financing Receivable, Originated Two Years before Latest Fiscal Year	94,713
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,793
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,518
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45,301
Total	288,766
Total commercial | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	20,533
Financing Receivable, Revolving	200
Financing Receivable, Originated in Current Fiscal Year	2,769
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	55,451
Financing Receivable, Originated Two Years before Latest Fiscal Year	16,546
Financing Receivable, Originated Three Years before Latest Fiscal Year	45,259
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,193
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,374
Total	158,792
Total commercial | PPP
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,022,217
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	1,022,217
Total commercial | PPP | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	7,409
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	7,409
Total commercial | PPP | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	995,646
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	995,646
Total commercial | PPP | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	19,161
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	19,161
Total commercial | Commercial And Industrial Financing Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8,562
Financing Receivable, Revolving	2,051,948
Financing Receivable, Originated in Current Fiscal Year	1,138,680
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,667,475
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,575,701
Financing Receivable, Originated Three Years before Latest Fiscal Year	593,255
Financing Receivable, Originated Four Years before Latest Fiscal Year	377,868
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	528,478
Total	7,933,404
Total commercial | Commercial And Industrial Financing Receivable [Member] | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	9,424
Financing Receivable, Originated in Current Fiscal Year	13,594
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	61,594
Financing Receivable, Originated Two Years before Latest Fiscal Year	48,357
Financing Receivable, Originated Three Years before Latest Fiscal Year	22
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,783
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	146,774
Total commercial | Commercial And Industrial Financing Receivable [Member] | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,904
Financing Receivable, Revolving	2,031,744
Financing Receivable, Originated in Current Fiscal Year	1,102,032
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,581,019
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,430,036
Financing Receivable, Originated Three Years before Latest Fiscal Year	545,931
Financing Receivable, Originated Four Years before Latest Fiscal Year	326,862
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	518,950
Total	7,536,572
Total commercial | Commercial And Industrial Financing Receivable [Member] | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,089
Financing Receivable, Revolving	10,580
Financing Receivable, Originated in Current Fiscal Year	21,483
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	18,101
Financing Receivable, Originated Two Years before Latest Fiscal Year	81,580
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,369
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,031
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,015
Total	144,159
Total commercial | Commercial And Industrial Financing Receivable [Member] | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	568
Financing Receivable, Revolving	200
Financing Receivable, Originated in Current Fiscal Year	1,571
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,761
Financing Receivable, Originated Two Years before Latest Fiscal Year	15,728
Financing Receivable, Originated Three Years before Latest Fiscal Year	44,933
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,193
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,513
Total	105,899
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,150
Financing Receivable, Revolving	21,505
Financing Receivable, Originated in Current Fiscal Year	123,426
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	247,142
Financing Receivable, Originated Two Years before Latest Fiscal Year	140,499
Financing Receivable, Originated Three Years before Latest Fiscal Year	108,323
Financing Receivable, Originated Four Years before Latest Fiscal Year	162,821
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	101,280
Total	904,997
Total commercial | Commercial real estate — owner occupied | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	2,420
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,410
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,106
Financing Receivable, Originated Three Years before Latest Fiscal Year	556
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,671
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,236
Total	14,398
Total commercial | Commercial real estate — owner occupied | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,150
Financing Receivable, Revolving	18,912
Financing Receivable, Originated in Current Fiscal Year	120,161
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	236,928
Financing Receivable, Originated Two Years before Latest Fiscal Year	137,669
Financing Receivable, Originated Three Years before Latest Fiscal Year	106,305
Financing Receivable, Originated Four Years before Latest Fiscal Year	155,023
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	90,750
Total	865,748
Total commercial | Commercial real estate — owner occupied | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	2,593
Financing Receivable, Originated in Current Fiscal Year	678
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,804
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,354
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,135
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,127
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,117
Total	22,808
Total commercial | Commercial real estate — owner occupied | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	168
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	371
Financing Receivable, Originated Three Years before Latest Fiscal Year	326
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,177
Total	2,043
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,712
Financing Receivable, Revolving	2,073,453
Financing Receivable, Originated in Current Fiscal Year	2,284,323
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,914,617
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,716,200
Financing Receivable, Originated Three Years before Latest Fiscal Year	701,578
Financing Receivable, Originated Four Years before Latest Fiscal Year	540,690
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	629,759
Total	9,860,618
Total commercial | Commercial and business lending | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	9,424
Financing Receivable, Originated in Current Fiscal Year	23,423
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	64,004
Financing Receivable, Originated Two Years before Latest Fiscal Year	49,462
Financing Receivable, Originated Three Years before Latest Fiscal Year	578
Financing Receivable, Originated Four Years before Latest Fiscal Year	16,454
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,236
Total	168,582
Total commercial | Commercial and business lending | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	6,054
Financing Receivable, Revolving	2,050,656
Financing Receivable, Originated in Current Fiscal Year	2,217,839
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,817,947
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,567,704
Financing Receivable, Originated Three Years before Latest Fiscal Year	652,236
Financing Receivable, Originated Four Years before Latest Fiscal Year	481,885
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	609,700
Total	9,397,966
Total commercial | Commercial and business lending | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,089
Financing Receivable, Revolving	13,173
Financing Receivable, Originated in Current Fiscal Year	41,323
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	25,905
Financing Receivable, Originated Two Years before Latest Fiscal Year	82,934
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,504
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,158
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,132
Total	186,129
Total commercial | Commercial and business lending | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	568
Financing Receivable, Revolving	200
Financing Receivable, Originated in Current Fiscal Year	1,739
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,761
Financing Receivable, Originated Two Years before Latest Fiscal Year	16,099
Financing Receivable, Originated Three Years before Latest Fiscal Year	45,259
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,193
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,690
Total	107,941
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	20,049
Financing Receivable, Revolving	190,477
Financing Receivable, Originated in Current Fiscal Year	1,157,543
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,150,634
Financing Receivable, Originated Two Years before Latest Fiscal Year	805,870
Financing Receivable, Originated Three Years before Latest Fiscal Year	349,513
Financing Receivable, Originated Four Years before Latest Fiscal Year	380,665
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	286,224
Total	4,320,926
Total commercial | Commercial real estate — investor | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	57,701
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	53,145
Financing Receivable, Originated Two Years before Latest Fiscal Year	12,408
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,439
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,818
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,506
Total	168,018
Total commercial | Commercial real estate — investor | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	84
Financing Receivable, Revolving	189,623
Financing Receivable, Originated in Current Fiscal Year	1,082,792
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,030,772
Financing Receivable, Originated Two Years before Latest Fiscal Year	781,592
Financing Receivable, Originated Three Years before Latest Fiscal Year	321,341
Financing Receivable, Originated Four Years before Latest Fiscal Year	350,582
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	245,290
Total	4,001,992
Total commercial | Commercial real estate — investor | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	854
Financing Receivable, Originated in Current Fiscal Year	16,032
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	18,026
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,424
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,733
Financing Receivable, Originated Four Years before Latest Fiscal Year	265
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	39,124
Total	100,459
Total commercial | Commercial real estate — investor | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	19,964
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,018
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	48,691
Financing Receivable, Originated Two Years before Latest Fiscal Year	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	304
Total	50,458
Total commercial | Real Estate Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,151
Financing Receivable, Revolving	45,347
Financing Receivable, Originated in Current Fiscal Year	546,409
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	772,861
Financing Receivable, Originated Two Years before Latest Fiscal Year	401,358
Financing Receivable, Originated Three Years before Latest Fiscal Year	70,582
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,683
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,369
Total	1,859,609
Total commercial | Real Estate Construction | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	24,437
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	16
Total	24,863
Total commercial | Real Estate Construction | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,151
Financing Receivable, Revolving	45,347
Financing Receivable, Originated in Current Fiscal Year	545,859
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	772,861
Financing Receivable, Originated Two Years before Latest Fiscal Year	376,567
Financing Receivable, Originated Three Years before Latest Fiscal Year	69,025
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,588
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	19,928
Total	1,832,176
Total commercial | Real Estate Construction | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	127
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	355
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,557
Financing Receivable, Originated Four Years before Latest Fiscal Year	95
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45
Total	2,178
Total commercial | Real Estate Construction | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	12
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	380
Total	392
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	21,200
Financing Receivable, Revolving	235,823
Financing Receivable, Originated in Current Fiscal Year	1,703,952
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,923,495
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,207,229
Financing Receivable, Originated Three Years before Latest Fiscal Year	420,095
Financing Receivable, Originated Four Years before Latest Fiscal Year	383,348
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	306,593
Total	6,180,536
Total commercial | Commercial Real Estate | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	58,112
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	53,145
Financing Receivable, Originated Two Years before Latest Fiscal Year	36,845
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,439
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,818
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,522
Total	192,881
Total commercial | Commercial Real Estate | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,236
Financing Receivable, Revolving	234,970
Financing Receivable, Originated in Current Fiscal Year	1,628,651
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,803,633
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,158,158
Financing Receivable, Originated Three Years before Latest Fiscal Year	390,366
Financing Receivable, Originated Four Years before Latest Fiscal Year	353,170
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	265,219
Total	5,834,167
Total commercial | Commercial Real Estate | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	854
Financing Receivable, Originated in Current Fiscal Year	16,159
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	18,026
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,779
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,289
Financing Receivable, Originated Four Years before Latest Fiscal Year	360
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	39,169
Total	102,637
Total commercial | Commercial Real Estate | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	19,964
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,030
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	48,691
Financing Receivable, Originated Two Years before Latest Fiscal Year	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	684
Total	50,850
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11,583
Financing Receivable, Revolving	777,781
Financing Receivable, Originated in Current Fiscal Year	1,599,134
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,639,527
Financing Receivable, Originated Two Years before Latest Fiscal Year	714,171
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,143,524
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,044,399
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,044,063
Total	8,962,599
Total consumer | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	112
Financing Receivable, Revolving	408
Financing Receivable, Originated in Current Fiscal Year	684
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	37
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	3
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	766
Total	1,898
Total consumer | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	10,497
Financing Receivable, Revolving	775,112
Financing Receivable, Originated in Current Fiscal Year	1,595,042
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,635,157
Financing Receivable, Originated Two Years before Latest Fiscal Year	707,843
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,134,922
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,033,553
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,002,246
Total	8,883,875
Total consumer | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	1,632
Financing Receivable, Originated in Current Fiscal Year	695
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	663
Financing Receivable, Originated Two Years before Latest Fiscal Year	137
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	206
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	694
Total	4,028
Total consumer | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	974
Financing Receivable, Revolving	629
Financing Receivable, Originated in Current Fiscal Year	2,713
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,706
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,153
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,602
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,638
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	40,357
Total	72,798
Total consumer | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,589,374
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,612,918
Financing Receivable, Originated Two Years before Latest Fiscal Year	691,182
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,127,490
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,035,918
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,828,640
Total	7,885,523
Total consumer | Residential mortgage | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	684
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	37
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	392
Total	1,113
Total consumer | Residential mortgage | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,585,703
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,608,973
Financing Receivable, Originated Two Years before Latest Fiscal Year	685,384
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,119,248
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,025,378
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,794,997
Total	7,819,683
Total consumer | Residential mortgage | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	695
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	663
Financing Receivable, Originated Two Years before Latest Fiscal Year	137
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	206
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	694
Total	2,396
Total consumer | Residential mortgage | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	2,292
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,282
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,624
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,243
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,334
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,557
Total	62,331
Total consumer | Home Equity Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11,549
Financing Receivable, Revolving	612,936
Financing Receivable, Originated in Current Fiscal Year	2,462
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	15,040
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,545
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,768
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,930
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	91,912
Total	761,593
Total consumer | Home Equity Loan | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	107
Financing Receivable, Revolving	39
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	369
Total	408
Total consumer | Home Equity Loan | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	10,470
Financing Receivable, Revolving	610,660
Financing Receivable, Originated in Current Fiscal Year	2,041
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	14,679
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,022
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,415
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,700
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	83,761
Total	749,277
Total consumer | Home Equity Loan | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	1,632
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	1,632
Total consumer | Home Equity Loan | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	972
Financing Receivable, Revolving	606
Financing Receivable, Originated in Current Fiscal Year	421
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	361
Financing Receivable, Originated Two Years before Latest Fiscal Year	523
Financing Receivable, Originated Three Years before Latest Fiscal Year	353
Financing Receivable, Originated Four Years before Latest Fiscal Year	230
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,782
Total	10,277
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	34
Financing Receivable, Revolving	164,845
Financing Receivable, Originated in Current Fiscal Year	7,298
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,568
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,443
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,265
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,551
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	123,511
Total	315,483
Total consumer | Other consumer | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5
Financing Receivable, Revolving	369
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	3
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5
Total	377
Total consumer | Other consumer | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	27
Financing Receivable, Revolving	164,453
Financing Receivable, Originated in Current Fiscal Year	7,298
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,505
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,438
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,259
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,475
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	123,487
Total	314,916
Total consumer | Other consumer | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2
Financing Receivable, Revolving	23
Financing Receivable, Originated in Current Fiscal Year	1
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	63
Financing Receivable, Originated Two Years before Latest Fiscal Year	5
Financing Receivable, Originated Three Years before Latest Fiscal Year	6
Financing Receivable, Originated Four Years before Latest Fiscal Year	74
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	19
Total	$ 190