Loans - Credit risk profile by risk grade of commercial loans (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Loans
Amortized Cost Basis by Origination Year - 2020	$ 5,784,801
Amortized Cost Basis by Origination Year - 2019	4,630,110
Amortized Cost Basis by Origination Year - 2018	3,375,501
Amortized Cost Basis by Origination Year - 2017	2,645,052
Amortized Cost Basis by Origination Year - 2016	2,193,682
Amortized Cost Basis by Origination Year - Prior	4,924,682
Amortized Cost Basis by Origination Year - Revolving	1,683,987
Total loans - ASU 2016-13	25,237,815
Construction and land development
Loans
Total loans - ASU 2016-13	1,840,111
Other income producing property
Loans
Total loans - ASU 2016-13	629,497
Consumer Owner Occupied Loans
Loans
Total loans - ASU 2016-13	4,311,186
Other loans
Loans
Total loans - ASU 2016-13	7,540
Commercial loans
Loans
Amortized Cost Basis by Origination Year - 2020	4,598,750
Amortized Cost Basis by Origination Year - 2019	3,418,351
Amortized Cost Basis by Origination Year - 2018	2,506,587
Amortized Cost Basis by Origination Year - 2017	1,958,109
Amortized Cost Basis by Origination Year - 2016	1,689,471
Amortized Cost Basis by Origination Year - Prior	3,436,298
Amortized Cost Basis by Origination Year - Revolving	375,431
Total loans - ASU 2016-13	17,982,997
Commercial loans | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	4,529,533
Amortized Cost Basis by Origination Year - 2019	3,231,542
Amortized Cost Basis by Origination Year - 2018	2,357,867
Amortized Cost Basis by Origination Year - 2017	1,825,485
Amortized Cost Basis by Origination Year - 2016	1,572,742
Amortized Cost Basis by Origination Year - Prior	3,084,610
Amortized Cost Basis by Origination Year - Revolving	360,082
Total loans - ASU 2016-13	16,961,861
Commercial loans | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	62,176
Amortized Cost Basis by Origination Year - 2019	127,167
Amortized Cost Basis by Origination Year - 2018	127,435
Amortized Cost Basis by Origination Year - 2017	71,189
Amortized Cost Basis by Origination Year - 2016	57,971
Amortized Cost Basis by Origination Year - Prior	228,390
Amortized Cost Basis by Origination Year - Revolving	12,101
Total loans - ASU 2016-13	686,429
Commercial loans | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	7,041
Amortized Cost Basis by Origination Year - 2019	59,641
Amortized Cost Basis by Origination Year - 2018	21,284
Amortized Cost Basis by Origination Year - 2017	61,432
Amortized Cost Basis by Origination Year - 2016	58,755
Amortized Cost Basis by Origination Year - Prior	123,273
Amortized Cost Basis by Origination Year - Revolving	3,247
Total loans - ASU 2016-13	334,673
Commercial loans | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2019	1
Amortized Cost Basis by Origination Year - 2018	1
Amortized Cost Basis by Origination Year - 2017	3
Amortized Cost Basis by Origination Year - 2016	3
Amortized Cost Basis by Origination Year - Prior	25
Amortized Cost Basis by Origination Year - Revolving	1
Total loans - ASU 2016-13	34
Commercial loans | Construction and land development
Loans
Amortized Cost Basis by Origination Year - 2020	314,933
Amortized Cost Basis by Origination Year - 2019	445,069
Amortized Cost Basis by Origination Year - 2018	163,986
Amortized Cost Basis by Origination Year - 2017	91,391
Amortized Cost Basis by Origination Year - 2016	49,161
Amortized Cost Basis by Origination Year - Prior	75,311
Amortized Cost Basis by Origination Year - Revolving	17,572
Total loans - ASU 2016-13	1,157,423
Commercial loans | Construction and land development | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	310,705
Amortized Cost Basis by Origination Year - 2019	417,268
Amortized Cost Basis by Origination Year - 2018	162,696
Amortized Cost Basis by Origination Year - 2017	87,830
Amortized Cost Basis by Origination Year - 2016	44,234
Amortized Cost Basis by Origination Year - Prior	62,987
Amortized Cost Basis by Origination Year - Revolving	17,572
Total loans - ASU 2016-13	1,103,292
Commercial loans | Construction and land development | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	3,873
Amortized Cost Basis by Origination Year - 2019	24,986
Amortized Cost Basis by Origination Year - 2018	434
Amortized Cost Basis by Origination Year - 2017	1,640
Amortized Cost Basis by Origination Year - 2016	4,273
Amortized Cost Basis by Origination Year - Prior	8,469
Total loans - ASU 2016-13	43,675
Commercial loans | Construction and land development | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	355
Amortized Cost Basis by Origination Year - 2019	2,815
Amortized Cost Basis by Origination Year - 2018	856
Amortized Cost Basis by Origination Year - 2017	1,921
Amortized Cost Basis by Origination Year - 2016	654
Amortized Cost Basis by Origination Year - Prior	3,847
Total loans - ASU 2016-13	10,448
Commercial loans | Construction and land development | Doubtful
Loans
Amortized Cost Basis by Origination Year - Prior	8
Total loans - ASU 2016-13	8
Commercial loans | Commercial non-owner occupied
Loans
Amortized Cost Basis by Origination Year - 2020	592,239
Amortized Cost Basis by Origination Year - 2019	1,232,236
Amortized Cost Basis by Origination Year - 2018	993,392
Amortized Cost Basis by Origination Year - 2017	779,502
Amortized Cost Basis by Origination Year - 2016	799,268
Amortized Cost Basis by Origination Year - Prior	1,480,293
Amortized Cost Basis by Origination Year - Revolving	59,442
Total loans - ASU 2016-13	5,936,372
Commercial loans | Commercial non-owner occupied | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	549,564
Amortized Cost Basis by Origination Year - 2019	1,105,865
Amortized Cost Basis by Origination Year - 2018	878,410
Amortized Cost Basis by Origination Year - 2017	705,532
Amortized Cost Basis by Origination Year - 2016	725,339
Amortized Cost Basis by Origination Year - Prior	1,303,140
Amortized Cost Basis by Origination Year - Revolving	59,442
Total loans - ASU 2016-13	5,327,292
Commercial loans | Commercial non-owner occupied | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	41,358
Amortized Cost Basis by Origination Year - 2019	76,702
Amortized Cost Basis by Origination Year - 2018	106,855
Amortized Cost Basis by Origination Year - 2017	46,660
Amortized Cost Basis by Origination Year - 2016	35,293
Amortized Cost Basis by Origination Year - Prior	131,472
Total loans - ASU 2016-13	438,340
Commercial loans | Commercial non-owner occupied | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	1,317
Amortized Cost Basis by Origination Year - 2019	49,669
Amortized Cost Basis by Origination Year - 2018	8,127
Amortized Cost Basis by Origination Year - 2017	27,310
Amortized Cost Basis by Origination Year - 2016	38,636
Amortized Cost Basis by Origination Year - Prior	45,677
Total loans - ASU 2016-13	170,736
Commercial loans | Commercial non-owner occupied | Doubtful
Loans
Amortized Cost Basis by Origination Year - Prior	4
Total loans - ASU 2016-13	4
Commercial loans | Commercial owner occupied real estate loan
Loans
Amortized Cost Basis by Origination Year - 2020	632,415
Amortized Cost Basis by Origination Year - 2019	998,596
Amortized Cost Basis by Origination Year - 2018	770,908
Amortized Cost Basis by Origination Year - 2017	665,438
Amortized Cost Basis by Origination Year - 2016	518,897
Amortized Cost Basis by Origination Year - Prior	1,223,610
Amortized Cost Basis by Origination Year - Revolving	36,156
Total loans - ASU 2016-13	4,846,020
Commercial loans | Commercial owner occupied real estate loan | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	623,490
Amortized Cost Basis by Origination Year - 2019	979,946
Amortized Cost Basis by Origination Year - 2018	752,860
Amortized Cost Basis by Origination Year - 2017	627,298
Amortized Cost Basis by Origination Year - 2016	489,093
Amortized Cost Basis by Origination Year - Prior	1,122,413
Amortized Cost Basis by Origination Year - Revolving	35,709
Total loans - ASU 2016-13	4,630,809
Commercial loans | Commercial owner occupied real estate loan | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	4,836
Amortized Cost Basis by Origination Year - 2019	13,658
Amortized Cost Basis by Origination Year - 2018	14,252
Amortized Cost Basis by Origination Year - 2017	14,814
Amortized Cost Basis by Origination Year - 2016	14,729
Amortized Cost Basis by Origination Year - Prior	48,751
Amortized Cost Basis by Origination Year - Revolving	97
Total loans - ASU 2016-13	111,137
Commercial loans | Commercial owner occupied real estate loan | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	4,089
Amortized Cost Basis by Origination Year - 2019	4,992
Amortized Cost Basis by Origination Year - 2018	3,796
Amortized Cost Basis by Origination Year - 2017	23,326
Amortized Cost Basis by Origination Year - 2016	15,075
Amortized Cost Basis by Origination Year - Prior	52,441
Amortized Cost Basis by Origination Year - Revolving	350
Total loans - ASU 2016-13	104,069
Commercial loans | Commercial owner occupied real estate loan | Doubtful
Loans
Amortized Cost Basis by Origination Year - Prior	5
Total loans - ASU 2016-13	5
Commercial loans | Commercial and industrial
Loans
Amortized Cost Basis by Origination Year - 2020	2,954,310
Amortized Cost Basis by Origination Year - 2019	637,979
Amortized Cost Basis by Origination Year - 2018	495,399
Amortized Cost Basis by Origination Year - 2017	355,288
Amortized Cost Basis by Origination Year - 2016	243,873
Amortized Cost Basis by Origination Year - Prior	490,207
Amortized Cost Basis by Origination Year - Revolving	242,064
Total loans - ASU 2016-13	5,419,120
Commercial loans | Commercial and industrial | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	2,944,353
Amortized Cost Basis by Origination Year - 2019	630,152
Amortized Cost Basis by Origination Year - 2018	484,117
Amortized Cost Basis by Origination Year - 2017	339,940
Amortized Cost Basis by Origination Year - 2016	237,691
Amortized Cost Basis by Origination Year - Prior	456,125
Amortized Cost Basis by Origination Year - Revolving	227,613
Total loans - ASU 2016-13	5,319,991
Commercial loans | Commercial and industrial | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	9,431
Amortized Cost Basis by Origination Year - 2019	6,959
Amortized Cost Basis by Origination Year - 2018	3,768
Amortized Cost Basis by Origination Year - 2017	7,772
Amortized Cost Basis by Origination Year - 2016	2,791
Amortized Cost Basis by Origination Year - Prior	26,921
Amortized Cost Basis by Origination Year - Revolving	11,600
Total loans - ASU 2016-13	69,242
Commercial loans | Commercial and industrial | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	526
Amortized Cost Basis by Origination Year - 2019	867
Amortized Cost Basis by Origination Year - 2018	7,513
Amortized Cost Basis by Origination Year - 2017	7,573
Amortized Cost Basis by Origination Year - 2016	3,388
Amortized Cost Basis by Origination Year - Prior	7,159
Amortized Cost Basis by Origination Year - Revolving	2,850
Total loans - ASU 2016-13	29,876
Commercial loans | Commercial and industrial | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2019	1
Amortized Cost Basis by Origination Year - 2018	1
Amortized Cost Basis by Origination Year - 2017	3
Amortized Cost Basis by Origination Year - 2016	3
Amortized Cost Basis by Origination Year - Prior	2
Amortized Cost Basis by Origination Year - Revolving	1
Total loans - ASU 2016-13	11
Commercial loans | Other income producing property
Loans
Amortized Cost Basis by Origination Year - 2020	90,173
Amortized Cost Basis by Origination Year - 2019	95,518
Amortized Cost Basis by Origination Year - 2018	81,896
Amortized Cost Basis by Origination Year - 2017	65,979
Amortized Cost Basis by Origination Year - 2016	76,702
Amortized Cost Basis by Origination Year - Prior	164,792
Amortized Cost Basis by Origination Year - Revolving	6,572
Total loans - ASU 2016-13	581,632
Commercial loans | Other income producing property | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	86,891
Amortized Cost Basis by Origination Year - 2019	93,360
Amortized Cost Basis by Origination Year - 2018	79,172
Amortized Cost Basis by Origination Year - 2017	64,528
Amortized Cost Basis by Origination Year - 2016	74,821
Amortized Cost Basis by Origination Year - Prior	138,341
Amortized Cost Basis by Origination Year - Revolving	6,425
Total loans - ASU 2016-13	543,538
Commercial loans | Other income producing property | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	2,649
Amortized Cost Basis by Origination Year - 2019	1,249
Amortized Cost Basis by Origination Year - 2018	1,875
Amortized Cost Basis by Origination Year - 2017	238
Amortized Cost Basis by Origination Year - 2016	885
Amortized Cost Basis by Origination Year - Prior	12,637
Amortized Cost Basis by Origination Year - Revolving	100
Total loans - ASU 2016-13	19,633
Commercial loans | Other income producing property | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	633
Amortized Cost Basis by Origination Year - 2019	909
Amortized Cost Basis by Origination Year - 2018	849
Amortized Cost Basis by Origination Year - 2017	1,213
Amortized Cost Basis by Origination Year - 2016	996
Amortized Cost Basis by Origination Year - Prior	13,808
Amortized Cost Basis by Origination Year - Revolving	47
Total loans - ASU 2016-13	18,455
Commercial loans | Other income producing property | Doubtful
Loans
Amortized Cost Basis by Origination Year - Prior	6
Total loans - ASU 2016-13	6
Commercial loans | Consumer Owner Occupied Loans
Loans
Amortized Cost Basis by Origination Year - 2020	7,140
Amortized Cost Basis by Origination Year - 2019	8,953
Amortized Cost Basis by Origination Year - 2018	1,006
Amortized Cost Basis by Origination Year - 2017	511
Amortized Cost Basis by Origination Year - 2016	1,570
Amortized Cost Basis by Origination Year - Prior	2,085
Amortized Cost Basis by Origination Year - Revolving	13,625
Total loans - ASU 2016-13	34,890
Commercial loans | Consumer Owner Occupied Loans | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	6,990
Amortized Cost Basis by Origination Year - 2019	4,951
Amortized Cost Basis by Origination Year - 2018	612
Amortized Cost Basis by Origination Year - 2017	357
Amortized Cost Basis by Origination Year - 2016	1,564
Amortized Cost Basis by Origination Year - Prior	1,604
Amortized Cost Basis by Origination Year - Revolving	13,321
Total loans - ASU 2016-13	29,399
Commercial loans | Consumer Owner Occupied Loans | Special mention
Loans
Amortized Cost Basis by Origination Year - 2020	29
Amortized Cost Basis by Origination Year - 2019	3,613
Amortized Cost Basis by Origination Year - 2018	251
Amortized Cost Basis by Origination Year - 2017	65
Amortized Cost Basis by Origination Year - Prior	140
Amortized Cost Basis by Origination Year - Revolving	304
Total loans - ASU 2016-13	4,402
Commercial loans | Consumer Owner Occupied Loans | Substandard
Loans
Amortized Cost Basis by Origination Year - 2020	121
Amortized Cost Basis by Origination Year - 2019	389
Amortized Cost Basis by Origination Year - 2018	143
Amortized Cost Basis by Origination Year - 2017	89
Amortized Cost Basis by Origination Year - 2016	6
Amortized Cost Basis by Origination Year - Prior	341
Total loans - ASU 2016-13	1,089
Commercial loans | Other loans
Loans
Amortized Cost Basis by Origination Year - 2020	7,540
Total loans - ASU 2016-13	7,540
Commercial loans | Other loans | Pass
Loans
Amortized Cost Basis by Origination Year - 2020	7,540
Total loans - ASU 2016-13	7,540
Consumer
Loans
Amortized Cost Basis by Origination Year - 2020	1,186,051
Amortized Cost Basis by Origination Year - 2019	1,211,759
Amortized Cost Basis by Origination Year - 2018	868,914
Amortized Cost Basis by Origination Year - 2017	686,943
Amortized Cost Basis by Origination Year - 2016	504,211
Amortized Cost Basis by Origination Year - Prior	1,488,384
Amortized Cost Basis by Origination Year - Revolving	1,308,556
Total loans - ASU 2016-13	7,254,818
Consumer | Current
Loans
Amortized Cost Basis by Origination Year - 2020	1,185,454
Amortized Cost Basis by Origination Year - 2019	1,210,503
Amortized Cost Basis by Origination Year - 2018	865,838
Amortized Cost Basis by Origination Year - 2017	684,585
Amortized Cost Basis by Origination Year - 2016	502,098
Amortized Cost Basis by Origination Year - Prior	1,470,455
Amortized Cost Basis by Origination Year - Revolving	1,303,511
Total loans - ASU 2016-13	7,222,444
Consumer | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	268
Amortized Cost Basis by Origination Year - 2019	389
Amortized Cost Basis by Origination Year - 2018	480
Amortized Cost Basis by Origination Year - 2017	522
Amortized Cost Basis by Origination Year - 2016	199
Amortized Cost Basis by Origination Year - Prior	3,998
Amortized Cost Basis by Origination Year - Revolving	2,771
Total loans - ASU 2016-13	8,627
Consumer | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	282
Amortized Cost Basis by Origination Year - 2019	380
Amortized Cost Basis by Origination Year - 2018	1,892
Amortized Cost Basis by Origination Year - 2017	239
Amortized Cost Basis by Origination Year - 2016	538
Amortized Cost Basis by Origination Year - Prior	2,187
Amortized Cost Basis by Origination Year - Revolving	618
Total loans - ASU 2016-13	6,136
Consumer | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	47
Amortized Cost Basis by Origination Year - 2019	487
Amortized Cost Basis by Origination Year - 2018	704
Amortized Cost Basis by Origination Year - 2017	1,597
Amortized Cost Basis by Origination Year - 2016	1,376
Amortized Cost Basis by Origination Year - Prior	11,744
Amortized Cost Basis by Origination Year - Revolving	1,656
Total loans - ASU 2016-13	17,611
Consumer | Construction and land development
Loans
Amortized Cost Basis by Origination Year - 2020	262,580
Amortized Cost Basis by Origination Year - 2019	269,667
Amortized Cost Basis by Origination Year - 2018	86,778
Amortized Cost Basis by Origination Year - 2017	24,277
Amortized Cost Basis by Origination Year - 2016	7,238
Amortized Cost Basis by Origination Year - Prior	32,148
Total loans - ASU 2016-13	682,688
Consumer | Construction and land development | Current
Loans
Amortized Cost Basis by Origination Year - 2020	262,567
Amortized Cost Basis by Origination Year - 2019	269,667
Amortized Cost Basis by Origination Year - 2018	86,778
Amortized Cost Basis by Origination Year - 2017	24,277
Amortized Cost Basis by Origination Year - 2016	7,238
Amortized Cost Basis by Origination Year - Prior	31,980
Total loans - ASU 2016-13	682,507
Consumer | Construction and land development | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	13
Amortized Cost Basis by Origination Year - Prior	14
Total loans - ASU 2016-13	27
Consumer | Construction and land development | 60 days past due
Loans
Amortized Cost Basis by Origination Year - Prior	47
Total loans - ASU 2016-13	47
Consumer | Construction and land development | 90 days past due
Loans
Amortized Cost Basis by Origination Year - Prior	107
Total loans - ASU 2016-13	107
Consumer | Other income producing property
Loans
Amortized Cost Basis by Origination Year - 2020	3,226
Amortized Cost Basis by Origination Year - 2019	1,791
Amortized Cost Basis by Origination Year - 2018	2,441
Amortized Cost Basis by Origination Year - 2017	4,091
Amortized Cost Basis by Origination Year - 2016	3,065
Amortized Cost Basis by Origination Year - Prior	33,251
Total loans - ASU 2016-13	47,865
Consumer | Other income producing property | Current
Loans
Amortized Cost Basis by Origination Year - 2020	3,226
Amortized Cost Basis by Origination Year - 2019	1,791
Amortized Cost Basis by Origination Year - 2018	2,441
Amortized Cost Basis by Origination Year - 2017	4,091
Amortized Cost Basis by Origination Year - 2016	3,065
Amortized Cost Basis by Origination Year - Prior	33,236
Total loans - ASU 2016-13	47,850
Consumer | Other income producing property | 90 days past due
Loans
Amortized Cost Basis by Origination Year - Prior	15
Total loans - ASU 2016-13	15
Consumer | Consumer Owner Occupied Loans
Loans
Amortized Cost Basis by Origination Year - 2020	683,928
Amortized Cost Basis by Origination Year - 2019	703,312
Amortized Cost Basis by Origination Year - 2018	637,490
Amortized Cost Basis by Origination Year - 2017	581,670
Amortized Cost Basis by Origination Year - 2016	446,365
Amortized Cost Basis by Origination Year - Prior	1,223,531
Total loans - ASU 2016-13	4,276,296
Consumer | Consumer Owner Occupied Loans | Current
Loans
Amortized Cost Basis by Origination Year - 2020	683,682
Amortized Cost Basis by Origination Year - 2019	702,582
Amortized Cost Basis by Origination Year - 2018	635,065
Amortized Cost Basis by Origination Year - 2017	580,141
Amortized Cost Basis by Origination Year - 2016	444,876
Amortized Cost Basis by Origination Year - Prior	1,212,359
Total loans - ASU 2016-13	4,258,705
Consumer | Consumer Owner Occupied Loans | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2019	63
Amortized Cost Basis by Origination Year - 2018	237
Amortized Cost Basis by Origination Year - 2017	116
Amortized Cost Basis by Origination Year - 2016	68
Amortized Cost Basis by Origination Year - Prior	2,736
Total loans - ASU 2016-13	3,220
Consumer | Consumer Owner Occupied Loans | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	246
Amortized Cost Basis by Origination Year - 2019	330
Amortized Cost Basis by Origination Year - 2018	1,824
Amortized Cost Basis by Origination Year - 2017	134
Amortized Cost Basis by Origination Year - 2016	516
Amortized Cost Basis by Origination Year - Prior	1,445
Total loans - ASU 2016-13	4,495
Consumer | Consumer Owner Occupied Loans | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2019	337
Amortized Cost Basis by Origination Year - 2018	364
Amortized Cost Basis by Origination Year - 2017	1,279
Amortized Cost Basis by Origination Year - 2016	905
Amortized Cost Basis by Origination Year - Prior	6,991
Total loans - ASU 2016-13	9,876
Consumer | Home equity loans
Loans
Amortized Cost Basis by Origination Year - 2020	6,289
Amortized Cost Basis by Origination Year - 2019	7,046
Amortized Cost Basis by Origination Year - 2018	8,988
Amortized Cost Basis by Origination Year - 2017	2,204
Amortized Cost Basis by Origination Year - 2016	764
Amortized Cost Basis by Origination Year - Prior	35,274
Amortized Cost Basis by Origination Year - Revolving	1,287,233
Total loans - ASU 2016-13	1,347,798
Consumer | Home equity loans | Current
Loans
Amortized Cost Basis by Origination Year - 2020	6,134
Amortized Cost Basis by Origination Year - 2019	6,972
Amortized Cost Basis by Origination Year - 2018	8,988
Amortized Cost Basis by Origination Year - 2017	1,758
Amortized Cost Basis by Origination Year - 2016	442
Amortized Cost Basis by Origination Year - Prior	31,746
Amortized Cost Basis by Origination Year - Revolving	1,282,226
Total loans - ASU 2016-13	1,338,266
Consumer | Home equity loans | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	155
Amortized Cost Basis by Origination Year - 2017	289
Amortized Cost Basis by Origination Year - 2016	7
Amortized Cost Basis by Origination Year - Prior	314
Amortized Cost Basis by Origination Year - Revolving	2,752
Total loans - ASU 2016-13	3,517
Consumer | Home equity loans | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2019	6
Amortized Cost Basis by Origination Year - Prior	49
Amortized Cost Basis by Origination Year - Revolving	600
Total loans - ASU 2016-13	655
Consumer | Home equity loans | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2019	68
Amortized Cost Basis by Origination Year - 2017	157
Amortized Cost Basis by Origination Year - 2016	315
Amortized Cost Basis by Origination Year - Prior	3,165
Amortized Cost Basis by Origination Year - Revolving	1,655
Total loans - ASU 2016-13	5,360
Consumer | Consumer
Loans
Amortized Cost Basis by Origination Year - 2020	230,028
Amortized Cost Basis by Origination Year - 2019	229,943
Amortized Cost Basis by Origination Year - 2018	133,217
Amortized Cost Basis by Origination Year - 2017	74,701
Amortized Cost Basis by Origination Year - 2016	46,779
Amortized Cost Basis by Origination Year - Prior	164,180
Amortized Cost Basis by Origination Year - Revolving	21,323
Total loans - ASU 2016-13	900,171
Consumer | Consumer | Current
Loans
Amortized Cost Basis by Origination Year - 2020	229,845
Amortized Cost Basis by Origination Year - 2019	229,491
Amortized Cost Basis by Origination Year - 2018	132,566
Amortized Cost Basis by Origination Year - 2017	74,318
Amortized Cost Basis by Origination Year - 2016	46,477
Amortized Cost Basis by Origination Year - Prior	161,134
Amortized Cost Basis by Origination Year - Revolving	21,285
Total loans - ASU 2016-13	895,116
Consumer | Consumer | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	100
Amortized Cost Basis by Origination Year - 2019	326
Amortized Cost Basis by Origination Year - 2018	243
Amortized Cost Basis by Origination Year - 2017	117
Amortized Cost Basis by Origination Year - 2016	124
Amortized Cost Basis by Origination Year - Prior	934
Amortized Cost Basis by Origination Year - Revolving	19
Total loans - ASU 2016-13	1,863
Consumer | Consumer | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	36
Amortized Cost Basis by Origination Year - 2019	44
Amortized Cost Basis by Origination Year - 2018	68
Amortized Cost Basis by Origination Year - 2017	105
Amortized Cost Basis by Origination Year - 2016	22
Amortized Cost Basis by Origination Year - Prior	646
Amortized Cost Basis by Origination Year - Revolving	18
Total loans - ASU 2016-13	939
Consumer | Consumer | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	47
Amortized Cost Basis by Origination Year - 2019	82
Amortized Cost Basis by Origination Year - 2018	340
Amortized Cost Basis by Origination Year - 2017	161
Amortized Cost Basis by Origination Year - 2016	156
Amortized Cost Basis by Origination Year - Prior	1,466
Amortized Cost Basis by Origination Year - Revolving	1
Total loans - ASU 2016-13	$ 2,253