Loans and Allowance for Credit Losses (Disaggregation of Credit Quality Disclosures) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	$ 18,524,222	$ 18,589,081
Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	17,693,926	17,881,759
Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	450,496	433,630
Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	65,046	59,315
Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	314,754	214,377
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	112,301	439,585
Term Loans, Amortized Cost Basis by Origination Year, 2023	423,292	912,594
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,055,904	953,660
Term Loans, Amortized Cost Basis by Origination Year, 2021	924,738	489,992
Term Loans, Amortized Cost Basis by Origination Year, 2020	468,140	178,407
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,012,293	908,219
Revolving Loans	3,333	3,615
Revolving Loans Converted to Term Loans	210
Notes Receivable Gross	4,000,211	3,886,072
Residential Mortgages [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	112,301	439,024
Term Loans, Amortized Cost Basis by Origination Year, 2023	420,889	910,361
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,051,549	950,400
Term Loans, Amortized Cost Basis by Origination Year, 2021	921,491	489,262
Term Loans, Amortized Cost Basis by Origination Year, 2020	467,352	176,041
Term Loans, Amortized Cost Basis by Origination Year, Prior	994,793	891,232
Revolving Loans	3,333	3,615
Revolving Loans Converted to Term Loans	210
Notes Receivable Gross	3,971,918	3,859,935
Residential Mortgages [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024		561
Term Loans, Amortized Cost Basis by Origination Year, 2023	2,403	2,233
Term Loans, Amortized Cost Basis by Origination Year, 2022	4,355	3,260
Term Loans, Amortized Cost Basis by Origination Year, 2021	3,247	730
Term Loans, Amortized Cost Basis by Origination Year, 2020	788	2,366
Term Loans, Amortized Cost Basis by Origination Year, Prior	17,500	16,987
Notes Receivable Gross	28,293	26,137
Residential Mortgages [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2021	2
Term Loans, Amortized Cost Basis by Origination Year, Prior	65	55
Notes Receivable Gross	67	55
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	38,817	75,791
Term Loans, Amortized Cost Basis by Origination Year, 2023	50,055	59,691
Term Loans, Amortized Cost Basis by Origination Year, 2022	47,790	36,938
Term Loans, Amortized Cost Basis by Origination Year, 2021	28,985	28,514
Term Loans, Amortized Cost Basis by Origination Year, 2020	22,826	32,247
Term Loans, Amortized Cost Basis by Origination Year, Prior	64,001	41,678
Revolving Loans	1,115,357	1,144,770
Revolving Loans Converted to Term Loans	19,352	27,135
Notes Receivable Gross	1,387,183	1,446,764
Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	38,760	75,615
Term Loans, Amortized Cost Basis by Origination Year, 2023	49,970	59,454
Term Loans, Amortized Cost Basis by Origination Year, 2022	47,310	36,693
Term Loans, Amortized Cost Basis by Origination Year, 2021	28,197	28,076
Term Loans, Amortized Cost Basis by Origination Year, 2020	21,997	31,802
Term Loans, Amortized Cost Basis by Origination Year, Prior	59,552	39,150
Revolving Loans	1,115,136	1,144,401
Revolving Loans Converted to Term Loans	16,289	23,018
Notes Receivable Gross	1,377,211	1,438,209
Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	57	176
Term Loans, Amortized Cost Basis by Origination Year, 2023	85	237
Term Loans, Amortized Cost Basis by Origination Year, 2022	480	245
Term Loans, Amortized Cost Basis by Origination Year, 2021	788	438
Term Loans, Amortized Cost Basis by Origination Year, 2020	829	445
Term Loans, Amortized Cost Basis by Origination Year, Prior	4,449	2,528
Revolving Loans	221	369
Revolving Loans Converted to Term Loans	3,063	4,117
Notes Receivable Gross	9,972	8,555
Consumer [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	4	567
Term Loans, Amortized Cost Basis by Origination Year, 2023	901	2,388
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,458	1,473
Term Loans, Amortized Cost Basis by Origination Year, 2021	637	215
Term Loans, Amortized Cost Basis by Origination Year, 2020	114	573
Term Loans, Amortized Cost Basis by Origination Year, Prior	520	824
Revolving Loans	4,151	7,735
Revolving Loans Converted to Term Loans	1,117	1,618
Notes Receivable Gross	8,902	15,393
Residential Mortgage and Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	5,387,394	5,332,836
Residential Mortgage and Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	5,349,129	5,298,144
Residential Mortgage and Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	38,265	34,692
Commercial Non-Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	863,865	1,636,237
Term Loans, Amortized Cost Basis by Origination Year, 2023	1,464,318	1,926,982
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,601,935	1,146,981
Term Loans, Amortized Cost Basis by Origination Year, 2021	980,958	500,069
Term Loans, Amortized Cost Basis by Origination Year, 2020	425,747	406,719
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,129,012	934,756
Revolving Loans	3,224,514	3,337,514
Revolving Loans Converted to Term Loans	157,410	68,026
Notes Receivable Gross	9,847,759	9,957,284
Commercial Non-Real Estate [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	829,743	1,557,202
Term Loans, Amortized Cost Basis by Origination Year, 2023	1,357,524	1,812,370
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,498,085	1,106,433
Term Loans, Amortized Cost Basis by Origination Year, 2021	927,024	483,739
Term Loans, Amortized Cost Basis by Origination Year, 2020	393,960	398,626
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,098,853	923,143
Revolving Loans	3,074,946	3,186,189
Revolving Loans Converted to Term Loans	114,292	56,316
Notes Receivable Gross	9,294,427	9,524,018
Commercial Non-Real Estate [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	2,516	30,360
Term Loans, Amortized Cost Basis by Origination Year, 2023	70,201	60,228
Term Loans, Amortized Cost Basis by Origination Year, 2022	32,390	20,730
Term Loans, Amortized Cost Basis by Origination Year, 2021	28,224	8,245
Term Loans, Amortized Cost Basis by Origination Year, 2020	24,170	4,988
Term Loans, Amortized Cost Basis by Origination Year, Prior	26,446	9,117
Revolving Loans	65,735	94,252
Revolving Loans Converted to Term Loans	3,894	6,291
Notes Receivable Gross	253,576	234,211
Commercial Non-Real Estate [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	10,545	411
Term Loans, Amortized Cost Basis by Origination Year, 2023	9,528	6,206
Term Loans, Amortized Cost Basis by Origination Year, 2022	460	936
Term Loans, Amortized Cost Basis by Origination Year, 2021	10	27
Term Loans, Amortized Cost Basis by Origination Year, 2020	19	26
Term Loans, Amortized Cost Basis by Origination Year, Prior	775	836
Revolving Loans	12,558	2,620
Revolving Loans Converted to Term Loans	19,022	424
Notes Receivable Gross	52,917	11,486
Commercial Non-Real Estate [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	21,061	48,264
Term Loans, Amortized Cost Basis by Origination Year, 2023	27,065	48,178
Term Loans, Amortized Cost Basis by Origination Year, 2022	71,000	18,882
Term Loans, Amortized Cost Basis by Origination Year, 2021	25,700	8,058
Term Loans, Amortized Cost Basis by Origination Year, 2020	7,598	3,079
Term Loans, Amortized Cost Basis by Origination Year, Prior	2,938	1,660
Revolving Loans	71,275	54,453
Revolving Loans Converted to Term Loans	20,202	4,995
Notes Receivable Gross	246,839	187,569
Commercial Non-Real Estate [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	1	7,885
Term Loans, Amortized Cost Basis by Origination Year, 2023	4,140	1,179
Term Loans, Amortized Cost Basis by Origination Year, 2022	3,185	1,484
Term Loans, Amortized Cost Basis by Origination Year, 2021	201	27,000
Term Loans, Amortized Cost Basis by Origination Year, 2020	162	81
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,792	1,750
Revolving Loans	5,586	11,971
Revolving Loans Converted to Term Loans	2,237	8,480
Notes Receivable Gross	17,304	59,830
Commercial Real Estate - Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	142,774	380,199
Term Loans, Amortized Cost Basis by Origination Year, 2023	364,422	704,169
Term Loans, Amortized Cost Basis by Origination Year, 2022	701,928	631,510
Term Loans, Amortized Cost Basis by Origination Year, 2021	606,176	505,800
Term Loans, Amortized Cost Basis by Origination Year, 2020	488,972	293,517
Term Loans, Amortized Cost Basis by Origination Year, Prior	740,321	523,745
Revolving Loans	46,149	42,236
Revolving Loans Converted to Term Loans	3,516	12,587
Notes Receivable Gross	3,094,258	3,093,763
Commercial Real Estate - Owner Occupied [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	127,741	374,466
Term Loans, Amortized Cost Basis by Origination Year, 2023	360,670	689,626
Term Loans, Amortized Cost Basis by Origination Year, 2022	671,915	620,272
Term Loans, Amortized Cost Basis by Origination Year, 2021	595,514	501,054
Term Loans, Amortized Cost Basis by Origination Year, 2020	482,610	284,032
Term Loans, Amortized Cost Basis by Origination Year, Prior	708,227	493,707
Revolving Loans	45,024	40,533
Revolving Loans Converted to Term Loans	1,445	12,587
Notes Receivable Gross	2,993,146	3,016,277
Commercial Real Estate - Owner Occupied [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	15,033	2,574
Term Loans, Amortized Cost Basis by Origination Year, 2023	2,833	9,587
Term Loans, Amortized Cost Basis by Origination Year, 2022	23,790	9,654
Term Loans, Amortized Cost Basis by Origination Year, 2021	8,887	3,451
Term Loans, Amortized Cost Basis by Origination Year, 2020	5,227	8,791
Term Loans, Amortized Cost Basis by Origination Year, Prior	13,293	17,581
Revolving Loans	682	389
Revolving Loans Converted to Term Loans	2,071
Notes Receivable Gross	71,816	52,027
Commercial Real Estate - Owner Occupied [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024		837
Term Loans, Amortized Cost Basis by Origination Year, 2022		617
Term Loans, Amortized Cost Basis by Origination Year, 2021	708
Term Loans, Amortized Cost Basis by Origination Year, 2020		110
Term Loans, Amortized Cost Basis by Origination Year, Prior	4,605	5,083
Revolving Loans	150
Notes Receivable Gross	5,463	6,647
Commercial Real Estate - Owner Occupied [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024		2,322
Term Loans, Amortized Cost Basis by Origination Year, 2023	919	4,956
Term Loans, Amortized Cost Basis by Origination Year, 2022	6,223	967
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,067	1,295
Term Loans, Amortized Cost Basis by Origination Year, 2020	1,135	584
Term Loans, Amortized Cost Basis by Origination Year, Prior	14,196	7,374
Revolving Loans	293	1,314
Notes Receivable Gross	23,833	18,812
Commercial Real Estate - Income Producing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	161,708	470,045
Term Loans, Amortized Cost Basis by Origination Year, 2023	482,842	990,741
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,051,813	970,574
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,005,500	693,539
Term Loans, Amortized Cost Basis by Origination Year, 2020	686,258	347,293
Term Loans, Amortized Cost Basis by Origination Year, Prior	632,963	398,341
Revolving Loans	31,329	67,486
Revolving Loans Converted to Term Loans	1,399	48,924
Notes Receivable Gross	4,053,812	3,986,943
Commercial Real Estate - Income Producing [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	139,849	456,334
Term Loans, Amortized Cost Basis by Origination Year, 2023	474,323	953,501
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,007,715	966,402
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,002,586	618,003
Term Loans, Amortized Cost Basis by Origination Year, 2020	615,869	323,344
Term Loans, Amortized Cost Basis by Origination Year, Prior	614,519	367,010
Revolving Loans	31,329	65,486
Revolving Loans Converted to Term Loans	1,399	48,924
Notes Receivable Gross	3,887,589	3,799,004
Commercial Real Estate - Income Producing [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	19,989	9,469
Term Loans, Amortized Cost Basis by Origination Year, 2023	3,987	3,064
Term Loans, Amortized Cost Basis by Origination Year, 2022	11,858	3,886
Term Loans, Amortized Cost Basis by Origination Year, 2021	2,914	75,182
Term Loans, Amortized Cost Basis by Origination Year, 2020	70,389	23,827
Term Loans, Amortized Cost Basis by Origination Year, Prior	11,680	22,504
Revolving Loans		2,000
Notes Receivable Gross	120,817	139,932
Commercial Real Estate - Income Producing [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024		156
Term Loans, Amortized Cost Basis by Origination Year, 2023	446	32,255
Term Loans, Amortized Cost Basis by Origination Year, 2021		354
Term Loans, Amortized Cost Basis by Origination Year, Prior	6,220	8,061
Notes Receivable Gross	6,666	40,826
Commercial Real Estate - Income Producing [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	1,870	4,086
Term Loans, Amortized Cost Basis by Origination Year, 2023	4,086	1,921
Term Loans, Amortized Cost Basis by Origination Year, 2022	32,240	286
Term Loans, Amortized Cost Basis by Origination Year, 2020		122
Term Loans, Amortized Cost Basis by Origination Year, Prior	544	766
Notes Receivable Gross	38,740	7,181
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, 2024		73
Term Loans, Amortized Cost Basis by Origination Year, 2022	8,819
Notes Receivable Gross	8,819	73
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	4,053,812	3,986,943
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,887,589	3,799,004
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	120,817	139,932
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	6,666	40,826
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	38,740	7,181
Construction and Land Development [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	125,469	391,814
Term Loans, Amortized Cost Basis by Origination Year, 2023	455,172	679,594
Term Loans, Amortized Cost Basis by Origination Year, 2022	577,631	248,959
Term Loans, Amortized Cost Basis by Origination Year, 2021	155,721	62,218
Term Loans, Amortized Cost Basis by Origination Year, 2020	35,758	6,207
Term Loans, Amortized Cost Basis by Origination Year, Prior	17,767	19,436
Revolving Loans	158,041	140,094
Revolving Loans Converted to Term Loans	2,834	2,769
Notes Receivable Gross	1,528,393	1,551,091
Construction and Land Development [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	125,166	388,453
Term Loans, Amortized Cost Basis by Origination Year, 2023	453,843	676,687
Term Loans, Amortized Cost Basis by Origination Year, 2022	574,481	248,036
Term Loans, Amortized Cost Basis by Origination Year, 2021	151,676	62,086
Term Loans, Amortized Cost Basis by Origination Year, 2020	35,654	6,008
Term Loans, Amortized Cost Basis by Origination Year, Prior	17,271	18,834
Revolving Loans	157,839	139,587
Revolving Loans Converted to Term Loans	2,834	2,769
Notes Receivable Gross	1,518,764	1,542,460
Construction and Land Development [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024	303	3,067
Term Loans, Amortized Cost Basis by Origination Year, 2023	1,078	2,820
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,983	827
Term Loans, Amortized Cost Basis by Origination Year, 2021	432	83
Term Loans, Amortized Cost Basis by Origination Year, 2020	32	128
Term Loans, Amortized Cost Basis by Origination Year, Prior	257	323
Revolving Loans	202	212
Notes Receivable Gross	4,287	7,460
Construction and Land Development [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2024		294
Term Loans, Amortized Cost Basis by Origination Year, 2020		62
Notes Receivable Gross		356
Construction and Land Development [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	251	87
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,167	96
Term Loans, Amortized Cost Basis by Origination Year, 2021	3,613	49
Term Loans, Amortized Cost Basis by Origination Year, 2020	72	9
Term Loans, Amortized Cost Basis by Origination Year, Prior	239	279
Revolving Loans		295
Notes Receivable Gross	5,342	815
Construction and Land Development [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	113	7
Term Loans, Amortized Cost Basis by Origination Year, 2022	85	54
Term Loans, Amortized Cost Basis by Origination Year, Prior	20	11
Revolving Loans Converted to Term Loans	7
Notes Receivable Gross	225	72
Construction and Land Development [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,528,393	1,551,091
Construction and Land Development [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,518,764	1,542,460
Construction and Land Development [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	4,287	7,460
Construction and Land Development [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	0	356
Construction and Land Development [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	$ 5,342	$ 815