Loans and Allowance for Credit Losses (Disaggregation of Credit Quality Disclosures) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	$ 18,589,081	$ 18,444,094
Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	17,881,759	17,684,578
Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	433,630	457,620
Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	59,315	90,253
Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	214,377	211,643
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	439,585	632,397
Term Loans, Amortized Cost Basis by Origination Year, 2022	912,594	696,538
Term Loans, Amortized Cost Basis by Origination Year, 2021	953,660	519,421
Term Loans, Amortized Cost Basis by Origination Year, 2020	489,992	193,627
Term Loans, Amortized Cost Basis by Origination Year, 2019	178,407	109,755
Term Loans, Amortized Cost Basis by Origination Year, Prior	908,219	937,720
Revolving Loans	3,615	3,147
Notes Receivable Gross	3,886,072	3,092,605
Residential Mortgages [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	439,024	631,339
Term Loans, Amortized Cost Basis by Origination Year, 2022	910,361	694,104
Term Loans, Amortized Cost Basis by Origination Year, 2021	950,400	518,705
Term Loans, Amortized Cost Basis by Origination Year, 2020	489,262	192,431
Term Loans, Amortized Cost Basis by Origination Year, 2019	176,041	107,675
Term Loans, Amortized Cost Basis by Origination Year, Prior	891,232	918,918
Revolving Loans	3,615	3,147
Notes Receivable Gross	3,859,935	3,066,319
Residential Mortgages [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	561	1,058
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,233	2,434
Term Loans, Amortized Cost Basis by Origination Year, 2021	3,260	716
Term Loans, Amortized Cost Basis by Origination Year, 2020	730	1,196
Term Loans, Amortized Cost Basis by Origination Year, 2019	2,366	2,080
Term Loans, Amortized Cost Basis by Origination Year, Prior	16,987	18,802
Notes Receivable Gross	26,137	26,286
Residential Mortgages [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, Prior	55
Notes Receivable Gross	55
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	75,791	103,935
Term Loans, Amortized Cost Basis by Origination Year, 2022	59,691	58,446
Term Loans, Amortized Cost Basis by Origination Year, 2021	36,938	45,869
Term Loans, Amortized Cost Basis by Origination Year, 2020	28,514	63,473
Term Loans, Amortized Cost Basis by Origination Year, 2019	32,247	41,940
Term Loans, Amortized Cost Basis by Origination Year, Prior	41,678	43,830
Revolving Loans	1,144,770	1,213,417
Revolving Loans Converted to Term Loans	27,135	6,437
Notes Receivable Gross	1,446,764	1,577,347
Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	75,615	103,742
Term Loans, Amortized Cost Basis by Origination Year, 2022	59,454	58,248
Term Loans, Amortized Cost Basis by Origination Year, 2021	36,693	45,641
Term Loans, Amortized Cost Basis by Origination Year, 2020	28,076	62,715
Term Loans, Amortized Cost Basis by Origination Year, 2019	31,802	41,559
Term Loans, Amortized Cost Basis by Origination Year, Prior	39,150	40,489
Revolving Loans	1,144,401	1,212,958
Revolving Loans Converted to Term Loans	23,018	4,834
Notes Receivable Gross	1,438,209	1,570,186
Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	176	193
Term Loans, Amortized Cost Basis by Origination Year, 2022	237	198
Term Loans, Amortized Cost Basis by Origination Year, 2021	245	228
Term Loans, Amortized Cost Basis by Origination Year, 2020	438	758
Term Loans, Amortized Cost Basis by Origination Year, 2019	445	381
Term Loans, Amortized Cost Basis by Origination Year, Prior	2,528	3,341
Revolving Loans	369	459
Revolving Loans Converted to Term Loans	4,117	1,603
Notes Receivable Gross	8,555	7,161
Consumer [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	567
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,388
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,473
Term Loans, Amortized Cost Basis by Origination Year, 2020	215
Term Loans, Amortized Cost Basis by Origination Year, 2019	573
Term Loans, Amortized Cost Basis by Origination Year, Prior	824
Revolving Loans	7,735
Revolving Loans Converted to Term Loans	1,618
Notes Receivable Gross	15,393
Residential Mortgage and Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	5,332,836	4,669,952
Residential Mortgage and Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	5,298,144	4,636,505
Residential Mortgage and Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	34,692	33,447
Commercial Non-Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	1,636,237	2,728,906
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,926,982	1,517,070
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,146,981	725,405
Term Loans, Amortized Cost Basis by Origination Year, 2020	500,069	607,672
Term Loans, Amortized Cost Basis by Origination Year, 2019	406,719	288,376
Term Loans, Amortized Cost Basis by Origination Year, Prior	934,756	815,603
Revolving Loans	3,337,514	3,324,505
Revolving Loans Converted to Term Loans	68,026	138,916
Notes Receivable Gross	9,957,284	10,146,453
Commercial Non-Real Estate [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	1,557,202	2,600,656
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,812,370	1,450,689
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,106,433	679,355
Term Loans, Amortized Cost Basis by Origination Year, 2020	483,739	569,842
Term Loans, Amortized Cost Basis by Origination Year, 2019	398,626	267,025
Term Loans, Amortized Cost Basis by Origination Year, Prior	923,143	763,122
Revolving Loans	3,186,189	3,193,769
Revolving Loans Converted to Term Loans	56,316	116,659
Notes Receivable Gross	9,524,018	9,641,117
Commercial Non-Real Estate [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	30,360	68,307
Term Loans, Amortized Cost Basis by Origination Year, 2022	60,228	38,949
Term Loans, Amortized Cost Basis by Origination Year, 2021	20,730	31,841
Term Loans, Amortized Cost Basis by Origination Year, 2020	8,245	11,757
Term Loans, Amortized Cost Basis by Origination Year, 2019	4,988	8,237
Term Loans, Amortized Cost Basis by Origination Year, Prior	9,117	49,577
Revolving Loans	94,252	66,339
Revolving Loans Converted to Term Loans	6,291	9,836
Notes Receivable Gross	234,211	284,843
Commercial Non-Real Estate [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	411	30,276
Term Loans, Amortized Cost Basis by Origination Year, 2022	6,206	13,625
Term Loans, Amortized Cost Basis by Origination Year, 2021	936	2,443
Term Loans, Amortized Cost Basis by Origination Year, 2020	27	4,406
Term Loans, Amortized Cost Basis by Origination Year, 2019	26	322
Term Loans, Amortized Cost Basis by Origination Year, Prior	836	1,654
Revolving Loans	2,620	25,184
Revolving Loans Converted to Term Loans	424	2,070
Notes Receivable Gross	11,486	79,980
Commercial Non-Real Estate [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	48,264	29,667
Term Loans, Amortized Cost Basis by Origination Year, 2022	48,178	13,807
Term Loans, Amortized Cost Basis by Origination Year, 2021	18,882	11,766
Term Loans, Amortized Cost Basis by Origination Year, 2020	8,058	21,667
Term Loans, Amortized Cost Basis by Origination Year, 2019	3,079	12,792
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,660	1,250
Revolving Loans	54,453	39,213
Revolving Loans Converted to Term Loans	4,995	10,351
Notes Receivable Gross	187,569	140,513
Commercial Non-Real Estate [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	7,885
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,179
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,484
Term Loans, Amortized Cost Basis by Origination Year, 2020	27,000
Term Loans, Amortized Cost Basis by Origination Year, 2019	81
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,750
Revolving Loans	11,971
Revolving Loans Converted to Term Loans	8,480
Notes Receivable Gross	59,830
Commercial Real Estate - Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	380,199	657,149
Term Loans, Amortized Cost Basis by Origination Year, 2022	704,169	656,588
Term Loans, Amortized Cost Basis by Origination Year, 2021	631,510	548,851
Term Loans, Amortized Cost Basis by Origination Year, 2020	505,800	350,150
Term Loans, Amortized Cost Basis by Origination Year, 2019	293,517	285,083
Term Loans, Amortized Cost Basis by Origination Year, Prior	523,745	480,548
Revolving Loans	42,236	48,623
Revolving Loans Converted to Term Loans	12,587	6,066
Notes Receivable Gross	3,093,763	3,033,058
Commercial Real Estate - Owner Occupied [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	374,466	630,121
Term Loans, Amortized Cost Basis by Origination Year, 2022	689,626	650,742
Term Loans, Amortized Cost Basis by Origination Year, 2021	620,272	537,849
Term Loans, Amortized Cost Basis by Origination Year, 2020	501,054	328,364
Term Loans, Amortized Cost Basis by Origination Year, 2019	284,032	265,437
Term Loans, Amortized Cost Basis by Origination Year, Prior	493,707	447,707
Revolving Loans	40,533	46,730
Revolving Loans Converted to Term Loans	12,587	5,107
Notes Receivable Gross	3,016,277	2,912,057
Commercial Real Estate - Owner Occupied [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	2,574	7,129
Term Loans, Amortized Cost Basis by Origination Year, 2022	9,587	5,299
Term Loans, Amortized Cost Basis by Origination Year, 2021	9,654	3,743
Term Loans, Amortized Cost Basis by Origination Year, 2020	3,451	13,301
Term Loans, Amortized Cost Basis by Origination Year, 2019	8,791	10,872
Term Loans, Amortized Cost Basis by Origination Year, Prior	17,581	7,706
Revolving Loans	389	893
Revolving Loans Converted to Term Loans		150
Notes Receivable Gross	52,027	49,093
Commercial Real Estate - Owner Occupied [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	837
Term Loans, Amortized Cost Basis by Origination Year, 2021	617	544
Term Loans, Amortized Cost Basis by Origination Year, 2020		822
Term Loans, Amortized Cost Basis by Origination Year, 2019	110	1,231
Term Loans, Amortized Cost Basis by Origination Year, Prior	5,083	3,670
Notes Receivable Gross	6,647	6,267
Commercial Real Estate - Owner Occupied [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	2,322	19,899
Term Loans, Amortized Cost Basis by Origination Year, 2022	4,956	547
Term Loans, Amortized Cost Basis by Origination Year, 2021	967	6,715
Term Loans, Amortized Cost Basis by Origination Year, 2020	1,295	7,663
Term Loans, Amortized Cost Basis by Origination Year, 2019	584	7,543
Term Loans, Amortized Cost Basis by Origination Year, Prior	7,374	21,465
Revolving Loans	1,314	1,000
Revolving Loans Converted to Term Loans		809
Notes Receivable Gross	18,812	65,641
Commercial Real Estate - Income Producing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	470,045	896,199
Term Loans, Amortized Cost Basis by Origination Year, 2022	990,741	813,448
Term Loans, Amortized Cost Basis by Origination Year, 2021	970,574	721,984
Term Loans, Amortized Cost Basis by Origination Year, 2020	693,539	443,633
Term Loans, Amortized Cost Basis by Origination Year, 2019	347,293	245,617
Term Loans, Amortized Cost Basis by Origination Year, Prior	398,341	319,156
Revolving Loans	67,486	113,954
Revolving Loans Converted to Term Loans	48,924	7,000
Notes Receivable Gross	3,986,943	3,560,991
Commercial Real Estate - Income Producing [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	456,334	894,522
Term Loans, Amortized Cost Basis by Origination Year, 2022	953,501	795,378
Term Loans, Amortized Cost Basis by Origination Year, 2021	966,402	660,235
Term Loans, Amortized Cost Basis by Origination Year, 2020	618,003	420,435
Term Loans, Amortized Cost Basis by Origination Year, 2019	323,344	232,145
Term Loans, Amortized Cost Basis by Origination Year, Prior	367,010	317,446
Revolving Loans	65,486	113,487
Revolving Loans Converted to Term Loans	48,924	7,000
Notes Receivable Gross	3,799,004	3,440,648
Commercial Real Estate - Income Producing [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	9,469	1,027
Term Loans, Amortized Cost Basis by Origination Year, 2022	3,064	18,070
Term Loans, Amortized Cost Basis by Origination Year, 2021	3,886	58,256
Term Loans, Amortized Cost Basis by Origination Year, 2020	75,182	20,865
Term Loans, Amortized Cost Basis by Origination Year, 2019	23,827	12,066
Term Loans, Amortized Cost Basis by Origination Year, Prior	22,504	836
Revolving Loans	2,000	467
Notes Receivable Gross	139,932	111,587
Commercial Real Estate - Income Producing [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	156	235
Term Loans, Amortized Cost Basis by Origination Year, 2022	32,255
Term Loans, Amortized Cost Basis by Origination Year, 2021		708
Term Loans, Amortized Cost Basis by Origination Year, 2020	354	2,325
Term Loans, Amortized Cost Basis by Origination Year, 2019		166
Term Loans, Amortized Cost Basis by Origination Year, Prior	8,061	376
Notes Receivable Gross	40,826	3,810
Commercial Real Estate - Income Producing [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	4,086	415
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,921
Term Loans, Amortized Cost Basis by Origination Year, 2021	286	2,785
Term Loans, Amortized Cost Basis by Origination Year, 2020		8
Term Loans, Amortized Cost Basis by Origination Year, 2019	122	1,240
Term Loans, Amortized Cost Basis by Origination Year, Prior	766	498
Notes Receivable Gross	7,181	4,946
Commercial Real Estate - Income Producing [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	73
Notes Receivable Gross	73
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,986,943	3,560,991
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,799,004	3,440,648
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	139,932	111,587
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	40,826	3,810
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	7,181	4,946
Construction and Land Development [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	391,814	672,003
Term Loans, Amortized Cost Basis by Origination Year, 2022	679,594	713,730
Term Loans, Amortized Cost Basis by Origination Year, 2021	248,959	149,222
Term Loans, Amortized Cost Basis by Origination Year, 2020	62,218	9,965
Term Loans, Amortized Cost Basis by Origination Year, 2019	6,207	15,620
Term Loans, Amortized Cost Basis by Origination Year, Prior	19,436	11,684
Revolving Loans	140,094	128,911
Revolving Loans Converted to Term Loans	2,769	2,457
Notes Receivable Gross	1,551,091	1,703,592
Construction and Land Development [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	388,453	663,735
Term Loans, Amortized Cost Basis by Origination Year, 2022	676,687	711,731
Term Loans, Amortized Cost Basis by Origination Year, 2021	248,036	148,579
Term Loans, Amortized Cost Basis by Origination Year, 2020	62,086	9,198
Term Loans, Amortized Cost Basis by Origination Year, 2019	6,008	15,360
Term Loans, Amortized Cost Basis by Origination Year, Prior	18,834	10,854
Revolving Loans	139,587	128,842
Revolving Loans Converted to Term Loans	2,769	2,457
Notes Receivable Gross	1,542,460	1,690,756
Construction and Land Development [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	3,067	8,233
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,820	1,944
Term Loans, Amortized Cost Basis by Origination Year, 2021	827	643
Term Loans, Amortized Cost Basis by Origination Year, 2020	83	559
Term Loans, Amortized Cost Basis by Origination Year, 2019	128	199
Term Loans, Amortized Cost Basis by Origination Year, Prior	323	450
Revolving Loans	212	69
Notes Receivable Gross	7,460	12,097
Construction and Land Development [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	294
Term Loans, Amortized Cost Basis by Origination Year, 2020		196
Term Loans, Amortized Cost Basis by Origination Year, 2019	62
Notes Receivable Gross	356	196
Construction and Land Development [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023		35
Term Loans, Amortized Cost Basis by Origination Year, 2022	87	55
Term Loans, Amortized Cost Basis by Origination Year, 2021	96
Term Loans, Amortized Cost Basis by Origination Year, 2020	49	12
Term Loans, Amortized Cost Basis by Origination Year, 2019	9	61
Term Loans, Amortized Cost Basis by Origination Year, Prior	279	380
Revolving Loans	295
Notes Receivable Gross	815	543
Construction and Land Development [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2022	7
Term Loans, Amortized Cost Basis by Origination Year, 2021	54
Term Loans, Amortized Cost Basis by Origination Year, Prior	11
Notes Receivable Gross	72
Construction and Land Development [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,551,091	1,703,592
Construction and Land Development [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,542,460	1,690,756
Construction and Land Development [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	7,460	12,097
Construction and Land Development [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	356	196
Construction and Land Development [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	$ 815	$ 543