Loans and Allowance for Credit Losses (Disaggregation of Credit Quality Disclosures) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	$ 18,434
Term Loans, Amortized Cost Basis by Origination Year, 2022	54,455
Term Loans, Amortized Cost Basis by Origination Year, 2021	32,893
Term Loans, Amortized Cost Basis by Origination Year, 2020	30,343
Term Loans, Amortized Cost Basis by Origination Year, 2019	7,487
Term Loans, Amortized Cost Basis by Origination Year, Prior	58,113
Revolving Loans	73,146
Revolving Loans Converted to Term Loans	2,196
Notes Receivable Gross	277,067
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	18,549,601	$ 18,444,094
Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	17,798,102	17,684,578
Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	455,978	457,620
Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	64,275	90,253
Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	231,246	211,643
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	173,266	632,397
Term Loans, Amortized Cost Basis by Origination Year, 2022	631,095	696,538
Term Loans, Amortized Cost Basis by Origination Year, 2021	803,134	519,421
Term Loans, Amortized Cost Basis by Origination Year, 2020	516,872	193,627
Term Loans, Amortized Cost Basis by Origination Year, 2019	188,842	109,755
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,013,546	937,720
Revolving Loans	3,038	3,147
Notes Receivable Gross	3,329,793	3,092,605
Residential Mortgages [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	173,196	631,339
Term Loans, Amortized Cost Basis by Origination Year, 2022	628,643	694,104
Term Loans, Amortized Cost Basis by Origination Year, 2021	800,082	518,705
Term Loans, Amortized Cost Basis by Origination Year, 2020	516,534	192,431
Term Loans, Amortized Cost Basis by Origination Year, 2019	187,232	107,675
Term Loans, Amortized Cost Basis by Origination Year, Prior	990,957	918,918
Revolving Loans	3,038	3,147
Notes Receivable Gross	3,299,682	3,066,319
Residential Mortgages [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	70	1,058
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,452	2,434
Term Loans, Amortized Cost Basis by Origination Year, 2021	3,052	716
Term Loans, Amortized Cost Basis by Origination Year, 2020	338	1,196
Term Loans, Amortized Cost Basis by Origination Year, 2019	1,610	2,080
Term Loans, Amortized Cost Basis by Origination Year, Prior	22,589	18,802
Notes Receivable Gross	30,111	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	20
Notes Receivable Gross	20
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	31,698	103,935
Term Loans, Amortized Cost Basis by Origination Year, 2022	83,478	58,446
Term Loans, Amortized Cost Basis by Origination Year, 2021	54,262	45,869
Term Loans, Amortized Cost Basis by Origination Year, 2020	41,453	63,473
Term Loans, Amortized Cost Basis by Origination Year, 2019	53,823	41,940
Term Loans, Amortized Cost Basis by Origination Year, Prior	73,826	43,830
Revolving Loans	1,182,270	1,213,417
Revolving Loans Converted to Term Loans	4,319	6,437
Notes Receivable Gross	1,525,129	1,577,347
Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	31,666	103,742
Term Loans, Amortized Cost Basis by Origination Year, 2022	83,306	58,248
Term Loans, Amortized Cost Basis by Origination Year, 2021	53,900	45,641
Term Loans, Amortized Cost Basis by Origination Year, 2020	40,880	62,715
Term Loans, Amortized Cost Basis by Origination Year, 2019	53,213	41,559
Term Loans, Amortized Cost Basis by Origination Year, Prior	69,745	40,489
Revolving Loans	1,182,108	1,212,958
Revolving Loans Converted to Term Loans	3,613	4,834
Notes Receivable Gross	1,518,431	1,570,186
Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	32	193
Term Loans, Amortized Cost Basis by Origination Year, 2022	172	198
Term Loans, Amortized Cost Basis by Origination Year, 2021	362	228
Term Loans, Amortized Cost Basis by Origination Year, 2020	573	758
Term Loans, Amortized Cost Basis by Origination Year, 2019	610	381
Term Loans, Amortized Cost Basis by Origination Year, Prior	4,081	3,341
Revolving Loans	162	459
Revolving Loans Converted to Term Loans	706	1,603
Notes Receivable Gross	6,698	7,161
Consumer [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2022	294
Term Loans, Amortized Cost Basis by Origination Year, 2021	329
Term Loans, Amortized Cost Basis by Origination Year, 2020	43
Term Loans, Amortized Cost Basis by Origination Year, 2019	152
Term Loans, Amortized Cost Basis by Origination Year, Prior	236
Revolving Loans	2,013
Revolving Loans Converted to Term Loans	296
Notes Receivable Gross	3,363
Residential Mortgage and Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	4,854,922	4,669,952
Residential Mortgage and Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	4,818,113	4,636,505
Residential Mortgage and Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	36,809	33,447
Commercial Non-Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	515,536	2,728,906
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,466,985	1,517,070
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,409,547	725,405
Term Loans, Amortized Cost Basis by Origination Year, 2020	655,851	607,672
Term Loans, Amortized Cost Basis by Origination Year, 2019	538,466	288,376
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,029,679	815,603
Revolving Loans	3,344,407	3,324,505
Revolving Loans Converted to Term Loans	53,011	138,916
Notes Receivable Gross	10,013,482	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	443,067	2,600,656
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,385,284	1,450,689
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,362,105	679,355
Term Loans, Amortized Cost Basis by Origination Year, 2020	592,762	569,842
Term Loans, Amortized Cost Basis by Origination Year, 2019	505,331	267,025
Term Loans, Amortized Cost Basis by Origination Year, Prior	958,298	763,122
Revolving Loans	3,214,349	3,193,769
Revolving Loans Converted to Term Loans	49,851	116,659
Notes Receivable Gross	9,511,047	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		68,307
Term Loans, Amortized Cost Basis by Origination Year, 2022		38,949
Term Loans, Amortized Cost Basis by Origination Year, 2021		31,841
Term Loans, Amortized Cost Basis by Origination Year, 2020		11,757
Term Loans, Amortized Cost Basis by Origination Year, 2019		8,237
Term Loans, Amortized Cost Basis by Origination Year, Prior		49,577
Revolving Loans		66,339
Revolving Loans Converted to Term Loans		9,836
Notes Receivable Gross		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	32,611	30,276
Term Loans, Amortized Cost Basis by Origination Year, 2022	5,560	13,625
Term Loans, Amortized Cost Basis by Origination Year, 2021	522	2,443
Term Loans, Amortized Cost Basis by Origination Year, 2020	1,837	4,406
Term Loans, Amortized Cost Basis by Origination Year, 2019	4,198	322
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,145	1,654
Revolving Loans	8,984	25,184
Revolving Loans Converted to Term Loans	141	2,070
Notes Receivable Gross	54,998	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	21,424	29,667
Term Loans, Amortized Cost Basis by Origination Year, 2022	21,686	13,807
Term Loans, Amortized Cost Basis by Origination Year, 2021	14,027	11,766
Term Loans, Amortized Cost Basis by Origination Year, 2020	30,909	21,667
Term Loans, Amortized Cost Basis by Origination Year, 2019	21,450	12,792
Term Loans, Amortized Cost Basis by Origination Year, Prior	12,123	1,250
Revolving Loans	47,928	39,213
Revolving Loans Converted to Term Loans	823	10,351
Notes Receivable Gross	170,370	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, 2022	309
Term Loans, Amortized Cost Basis by Origination Year, 2021	170
Term Loans, Amortized Cost Basis by Origination Year, 2020	463
Term Loans, Amortized Cost Basis by Origination Year, 2019	12
Term Loans, Amortized Cost Basis by Origination Year, Prior	33
Revolving Loans	2,993
Revolving Loans Converted to Term Loans	548
Notes Receivable Gross	4,528
Commercial Real Estate - Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	106,497	657,149
Term Loans, Amortized Cost Basis by Origination Year, 2022	659,286	656,588
Term Loans, Amortized Cost Basis by Origination Year, 2021	646,839	548,851
Term Loans, Amortized Cost Basis by Origination Year, 2020	538,318	350,150
Term Loans, Amortized Cost Basis by Origination Year, 2019	336,202	285,083
Term Loans, Amortized Cost Basis by Origination Year, Prior	714,567	480,548
Revolving Loans	36,191	48,623
Revolving Loans Converted to Term Loans	12,848	6,066
Notes Receivable Gross	3,050,748	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	86,006	630,121
Term Loans, Amortized Cost Basis by Origination Year, 2022	643,498	650,742
Term Loans, Amortized Cost Basis by Origination Year, 2021	641,601	537,849
Term Loans, Amortized Cost Basis by Origination Year, 2020	526,654	328,364
Term Loans, Amortized Cost Basis by Origination Year, 2019	315,352	265,437
Term Loans, Amortized Cost Basis by Origination Year, Prior	677,090	447,707
Revolving Loans	34,237	46,730
Revolving Loans Converted to Term Loans	12,848	5,107
Notes Receivable Gross	2,937,286	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	1,985	7,129
Term Loans, Amortized Cost Basis by Origination Year, 2022	8,785	5,299
Term Loans, Amortized Cost Basis by Origination Year, 2021	4,558	3,743
Term Loans, Amortized Cost Basis by Origination Year, 2020	3,668	13,301
Term Loans, Amortized Cost Basis by Origination Year, 2019	15,513	10,872
Term Loans, Amortized Cost Basis by Origination Year, Prior	17,228	7,706
Revolving Loans	954	893
Revolving Loans Converted to Term Loans		150
Notes Receivable Gross	52,691	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, 2022	46
Term Loans, Amortized Cost Basis by Origination Year, 2021		544
Term Loans, Amortized Cost Basis by Origination Year, 2020	543	822
Term Loans, Amortized Cost Basis by Origination Year, 2019	603	1,231
Term Loans, Amortized Cost Basis by Origination Year, Prior	6,360	3,670
Notes Receivable Gross	7,552	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	18,506	19,899
Term Loans, Amortized Cost Basis by Origination Year, 2022	6,957	547
Term Loans, Amortized Cost Basis by Origination Year, 2021	680	6,715
Term Loans, Amortized Cost Basis by Origination Year, 2020	7,453	7,663
Term Loans, Amortized Cost Basis by Origination Year, 2019	4,734	7,543
Term Loans, Amortized Cost Basis by Origination Year, Prior	13,889	21,465
Revolving Loans	1,000	1,000
Revolving Loans Converted to Term Loans		809
Notes Receivable Gross	53,219	65,641
Commercial Real Estate - Income Producing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	145,771	896,199
Term Loans, Amortized Cost Basis by Origination Year, 2022	889,469	813,448
Term Loans, Amortized Cost Basis by Origination Year, 2021	890,316	721,984
Term Loans, Amortized Cost Basis by Origination Year, 2020	766,516	443,633
Term Loans, Amortized Cost Basis by Origination Year, 2019	420,958	245,617
Term Loans, Amortized Cost Basis by Origination Year, Prior	530,212	319,156
Revolving Loans	115,148	113,954
Revolving Loans Converted to Term Loans	65	7,000
Notes Receivable Gross	3,758,455	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	122,528	894,522
Term Loans, Amortized Cost Basis by Origination Year, 2022	887,881	795,378
Term Loans, Amortized Cost Basis by Origination Year, 2021	889,960	660,235
Term Loans, Amortized Cost Basis by Origination Year, 2020	705,277	420,435
Term Loans, Amortized Cost Basis by Origination Year, 2019	398,028	232,145
Term Loans, Amortized Cost Basis by Origination Year, Prior	514,955	317,446
Revolving Loans	114,746	113,487
Revolving Loans Converted to Term Loans	65	7,000
Notes Receivable Gross	3,633,440	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	18,723	1,027
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,191	18,070
Term Loans, Amortized Cost Basis by Origination Year, 2021	37	58,256
Term Loans, Amortized Cost Basis by Origination Year, 2020	59,847	20,865
Term Loans, Amortized Cost Basis by Origination Year, 2019	22,922	12,066
Term Loans, Amortized Cost Basis by Origination Year, Prior	13,238	836
Revolving Loans	402	467
Notes Receivable Gross	116,360	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	985	235
Term Loans, Amortized Cost Basis by Origination Year, 2021		708
Term Loans, Amortized Cost Basis by Origination Year, 2020	178	2,325
Term Loans, Amortized Cost Basis by Origination Year, 2019		166
Term Loans, Amortized Cost Basis by Origination Year, Prior	371	376
Notes Receivable Gross	1,534	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	3,535	415
Term Loans, Amortized Cost Basis by Origination Year, 2022	397
Term Loans, Amortized Cost Basis by Origination Year, 2021	319	2,785
Term Loans, Amortized Cost Basis by Origination Year, 2020	1,214	8
Term Loans, Amortized Cost Basis by Origination Year, 2019	8	1,240
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,648	498
Notes Receivable Gross	7,121	4,946
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,758,455	3,560,991
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,633,440	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	116,360	111,587
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,534	3,810
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	7,121	4,946
Construction and Land Development [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	157,905	672,003
Term Loans, Amortized Cost Basis by Origination Year, 2022	751,389	713,730
Term Loans, Amortized Cost Basis by Origination Year, 2021	548,653	149,222
Term Loans, Amortized Cost Basis by Origination Year, 2020	103,279	9,965
Term Loans, Amortized Cost Basis by Origination Year, 2019	8,510	15,620
Term Loans, Amortized Cost Basis by Origination Year, Prior	25,275	11,684
Revolving Loans	126,526	128,911
Revolving Loans Converted to Term Loans	5,379	2,457
Notes Receivable Gross	1,726,916	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	155,497	663,735
Term Loans, Amortized Cost Basis by Origination Year, 2022	748,153	711,731
Term Loans, Amortized Cost Basis by Origination Year, 2021	545,932	148,579
Term Loans, Amortized Cost Basis by Origination Year, 2020	103,183	9,198
Term Loans, Amortized Cost Basis by Origination Year, 2019	7,786	15,360
Term Loans, Amortized Cost Basis by Origination Year, Prior	24,241	10,854
Revolving Loans	126,158	128,842
Revolving Loans Converted to Term Loans	5,379	2,457
Notes Receivable Gross	1,716,329	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	2,408	8,233
Term Loans, Amortized Cost Basis by Origination Year, 2022	3,185	1,944
Term Loans, Amortized Cost Basis by Origination Year, 2021	2,670	643
Term Loans, Amortized Cost Basis by Origination Year, 2020	96	559
Term Loans, Amortized Cost Basis by Origination Year, 2019	522	199
Term Loans, Amortized Cost Basis by Origination Year, Prior	611	450
Revolving Loans	368	69
Notes Receivable Gross	9,860	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, 2020		196
Term Loans, Amortized Cost Basis by Origination Year, 2019	191
Notes Receivable Gross	191	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	51	55
Term Loans, Amortized Cost Basis by Origination Year, 2021	51
Term Loans, Amortized Cost Basis by Origination Year, 2020		12
Term Loans, Amortized Cost Basis by Origination Year, 2019	11	61
Term Loans, Amortized Cost Basis by Origination Year, Prior	423	380
Notes Receivable Gross	536	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
Notes Receivable Gross	61
Construction and Land Development [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,726,916	1,703,592
Construction and Land Development [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,716,329	1,690,756
Construction and Land Development [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	9,860	12,097
Construction and Land Development [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	191	196
Construction and Land Development [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	$ 536	$ 543