Loans and Leases (Composition of the Loans and Leases Outstanding By Credit Rating) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 32,371,522	$ 32,791,975
SBA-PPP
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	493,800	2,410,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	6,413,587	8,459,531
2020	5,277,898	4,217,219
2019	3,358,724	2,787,346
2018	1,828,979	2,053,335
2017	1,477,828	1,647,878
Prior	2,304,991	2,238,335
Revolving	1,611,953	1,147,519
Revolving converted to term loans	6,328	6,897
Total loans and leases	22,280,288	22,558,060
Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	468,533	342,658
2020	374,393	341,862
2019	178,379	198,300
2018	24,985	56,118
2017	47,588	23,977
Prior	8,428	11,387
Revolving	9,491	11,122
Revolving converted to term loans	0	0
Total loans and leases	1,111,797	985,424
Commercial | Mortgage Receivable, Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	3,073,681	3,200,021
2020	3,058,161	2,240,919
2019	1,919,706	1,671,722
2018	1,225,963	1,334,727
2017	989,107	1,081,293
Prior	1,590,782	1,521,016
Revolving	135,040	115,109
Revolving converted to term loans	185	205
Total loans and leases	11,992,625	11,165,012
Commercial | Mortgage Receivable, Non-Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	635,569	868,982
2020	744,905	629,426
2019	600,969	401,226
2018	273,212	342,372
2017	270,351	302,018
Prior	410,541	410,223
Revolving	35,846	33,442
Revolving converted to term loans	0	0
Total loans and leases	2,971,393	2,987,689
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,785,254	1,641,579
2020	1,057,168	1,005,012
2019	659,670	516,098
2018	304,819	320,118
2017	170,782	240,590
Prior	295,240	295,709
Revolving	1,431,576	987,846
Revolving converted to term loans	6,143	6,692
Total loans and leases	5,710,652	5,013,644
Commercial | Pass | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	467,540	342,183
2020	374,206	341,233
2019	178,035	190,429
2018	23,546	50,776
2017	43,541	23,969
Prior	8,419	11,306
Revolving	9,491	10,969
Revolving converted to term loans	0	0
Total loans and leases	1,104,778	970,865
Commercial | Pass | Mortgage Receivable, Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	3,042,301	3,183,467
2020	3,016,532	2,201,165
2019	1,868,940	1,625,141
2018	1,193,126	1,301,412
2017	960,346	1,049,858
Prior	1,538,984	1,454,020
Revolving	125,025	101,556
Revolving converted to term loans	115	133
Total loans and leases	11,745,369	10,916,752
Commercial | Pass | Mortgage Receivable, Non-Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	628,953	865,514
2020	734,538	609,975
2019	577,953	378,136
2018	261,504	331,800
2017	261,946	282,810
Prior	388,956	391,517
Revolving	35,297	32,149
Revolving converted to term loans	0	0
Total loans and leases	2,889,147	2,891,901
Commercial | Pass | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,767,047	1,620,622
2020	1,042,730	983,852
2019	636,334	504,463
2018	298,326	310,468
2017	165,371	234,735
Prior	289,044	286,996
Revolving	1,338,162	899,978
Revolving converted to term loans	4,983	5,520
Total loans and leases	5,541,997	4,846,634
Commercial | Pass | SBA-PPP
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	450,550	2,406,291
2020	43,271	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	493,821	2,406,291
Commercial | Special mention | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	18	246
2020	152	0
2019	283	6,421
2018	0	5,342
2017	45	0
Prior	0	0
Revolving	0	153
Revolving converted to term loans	0	0
Total loans and leases	498	12,162
Commercial | Special mention | Mortgage Receivable, Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	2,924	6,274
2020	35,390	20,702
2019	35,949	36,739
2018	22,247	12,387
2017	11,399	17,699
Prior	20,233	25,693
Revolving	4,598	5,115
Revolving converted to term loans	70	72
Total loans and leases	132,810	124,681
Commercial | Special mention | Mortgage Receivable, Non-Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,252	569
2020	0	905
2019	262	10,794
2018	2,602	1,808
2017	32	5,121
Prior	5,083	3,279
Revolving	0	483
Revolving converted to term loans	0	0
Total loans and leases	9,231	22,959
Commercial | Special mention | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	2,455	3,146
2020	7,859	17,065
2019	20,225	7,265
2018	2,493	5,393
2017	3,769	3,307
Prior	3,517	4,912
Revolving	5,455	9,152
Revolving converted to term loans	296	189
Total loans and leases	46,069	50,429
Commercial | Substandard | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	975	229
2020	35	629
2019	61	1,450
2018	1,439	0
2017	4,002	8
Prior	9	81
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	6,521	2,397
Commercial | Substandard | Mortgage Receivable, Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	28,456	10,280
2020	6,239	19,052
2019	14,817	9,842
2018	10,590	20,928
2017	17,362	13,736
Prior	31,565	41,303
Revolving	5,417	8,438
Revolving converted to term loans	0	0
Total loans and leases	114,446	123,579
Commercial | Substandard | Mortgage Receivable, Non-Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	5,364	2,899
2020	10,367	18,546
2019	22,754	12,296
2018	9,106	8,764
2017	6,973	14,087
Prior	16,502	15,427
Revolving	549	810
Revolving converted to term loans	0	0
Total loans and leases	71,615	72,829
Commercial | Substandard | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	15,752	17,811
2020	6,579	4,095
2019	3,111	4,370
2018	4,000	4,257
2017	1,642	2,548
Prior	2,679	3,801
Revolving	15,911	22,384
Revolving converted to term loans	864	983
Total loans and leases	50,538	60,249
Commercial | Doubtful | Mortgage Receivable, Non-Owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	1,400
Prior	0
Revolving	0
Revolving converted to term loans	0
Total loans and leases	1,400
Commercial | Doubtful | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Revolving	1
Revolving converted to term loans	0
Total loans and leases	1
Commercial | Ungraded | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	72,047	56,332
Revolving converted to term loans	0	0
Total loans and leases	72,047	56,332
Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	2,940,962	2,679,097
2020	2,055,757	1,444,947
2019	842,404	929,030
2018	494,957	728,918
2017	398,111	536,569
Prior	859,913	951,150
Revolving	2,043,550	2,339,505
Revolving converted to term loans	117,956	161,817
Total loans and leases	9,753,610	9,771,033
Consumer Portfolio Segment | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	241,747	215,112
2020	122,544	86,127
2019	20,809	24,981
2018	6,665	10,648
2017	4,846	6,093
Prior	1,681	2,637
Revolving	1,278	2,525
Revolving converted to term loans	0	0
Total loans and leases	399,570	348,123
Consumer Portfolio Segment | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,967,306	1,885,273
2020	1,563,679	987,802
2019	610,344	671,657
2018	364,094	605,545
2017	341,954	476,855
Prior	811,720	909,361
Revolving	20,822	25,193
Revolving converted to term loans	0	0
Total loans and leases	5,679,919	5,561,686
Consumer Portfolio Segment | Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	1,677,049	1,891,037
Revolving converted to term loans	117,956	161,817
Total loans and leases	1,795,005	2,052,854
Consumer Portfolio Segment | Consumer Auto Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	598,560	524,393
2020	345,526	343,683
2019	200,172	221,383
2018	119,794	105,530
2017	48,949	50,627
Prior	18,387	9,786
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	1,331,388	1,255,402
Consumer Portfolio Segment | Consumer Loan, Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	133,349	54,319
2020	24,008	27,335
2019	11,079	11,009
2018	4,404	7,195
2017	2,362	2,994
Prior	28,125	29,366
Revolving	344,401	420,750
Revolving converted to term loans	0	0
Total loans and leases	547,728	552,968
Consumer And PCD Portfolio Segments
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	9,354,549	11,172,270
2020	7,357,392	5,690,922
2019	4,222,487	3,749,427
2018	2,345,334	2,812,829
2017	1,898,267	2,215,777
Prior	3,387,885	3,458,369
Revolving	3,665,601	3,500,512
Revolving converted to term loans	140,007	191,869
Total loans and leases	32,371,522	32,791,975
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	33,642
2020	23,737	28,756
2019	21,359	33,051
2018	21,398	30,576
2017	22,328	31,330
Prior	222,981	268,884
Revolving	10,098	13,488
Revolving converted to term loans	15,723	23,155
Total loans and leases	337,624	462,882
Current | Consumer Portfolio Segment | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	241,692	215,112
2020	122,259	85,707
2019	20,782	24,860
2018	6,665	10,269
2017	4,835	6,093
Prior	1,630	2,218
Revolving	1,278	2,525
Revolving converted to term loans	0	0
Total loans and leases	399,141	346,784
Current | Consumer Portfolio Segment | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,964,807	1,882,683
2020	1,561,214	978,298
2019	607,551	655,798
2018	359,581	596,309
2017	339,318	461,719
Prior	789,770	878,634
Revolving	20,822	24,973
Revolving converted to term loans	0	0
Total loans and leases	5,643,063	5,478,414
Current | Consumer Portfolio Segment | Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	1,671,148	1,879,968
Revolving converted to term loans	111,713	150,868
Total loans and leases	1,782,861	2,030,836
Current | Consumer Portfolio Segment | Consumer Auto Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	596,617	521,719
2020	343,230	340,594
2019	198,455	219,597
2018	118,540	104,280
2017	48,405	49,872
Prior	18,165	9,604
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	1,323,412	1,245,666
Current | Consumer Portfolio Segment | Consumer Loan, Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	132,402	53,842
2020	23,856	27,117
2019	11,019	10,911
2018	4,402	7,159
2017	2,362	2,980
Prior	28,099	29,336
Revolving	340,086	415,044
Revolving converted to term loans	0	0
Total loans and leases	542,226	546,389
Current | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	31,475
2020	22,154	25,425
2019	20,896	27,183
2018	20,486	27,955
2017	21,739	28,995
Prior	200,915	232,186
Revolving	10,070	13,212
Revolving converted to term loans	14,407	21,027
Total loans and leases	310,667	407,458
30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	71,053	121,499
30-59 days past due | Consumer Portfolio Segment | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	55	0
2020	285	420
2019	27	121
2018	0	370
2017	11	0
Prior	10	21
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	388	932
30-59 days past due | Consumer Portfolio Segment | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,809	2,278
2020	2,011	4,573
2019	2,045	11,463
2018	1,866	3,772
2017	1,385	8,613
Prior	9,469	12,299
Revolving	0	220
Revolving converted to term loans	0	0
Total loans and leases	18,585	43,218
30-59 days past due | Consumer Portfolio Segment | Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	3,688	8,241
Revolving converted to term loans	1,758	3,736
Total loans and leases	5,446	11,977
30-59 days past due | Consumer Portfolio Segment | Consumer Auto Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	1,331	2,175
2020	1,570	1,873
2019	1,265	1,257
2018	879	842
2017	409	544
Prior	174	134
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	5,628	6,825
30-59 days past due | Consumer Portfolio Segment | Consumer Loan, Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	205	322
2020	125	114
2019	23	77
2018	1	18
2017	0	11
Prior	25	7
Revolving	1,956	3,061
Revolving converted to term loans	0	0
Total loans and leases	2,335	3,610
30-59 days past due | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	999
2020	798	925
2019	98	801
2018	479	718
2017	164	1,341
Prior	9,173	12,637
Revolving	0	156
Revolving converted to term loans	186	745
Total loans and leases	10,898	18,322
60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	16,462	26,043
60-89 days past due | Consumer Portfolio Segment | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	9
2017	0	0
Prior	0	68
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	0	77
60-89 days past due | Consumer Portfolio Segment | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	465	30
2020	26	100
2019	67	1,246
2018	649	1,449
2017	507	834
Prior	2,352	4,705
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	4,066	8,364
60-89 days past due | Consumer Portfolio Segment | Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	256	527
Revolving converted to term loans	1,830	2,099
Total loans and leases	2,086	2,626
60-89 days past due | Consumer Portfolio Segment | Consumer Auto Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	184	329
2020	429	689
2019	296	312
2018	147	351
2017	48	109
Prior	30	45
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	1,134	1,835
60-89 days past due | Consumer Portfolio Segment | Consumer Loan, Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	697	102
2020	20	20
2019	36	13
2018	0	18
2017	0	3
Prior	1	23
Revolving	1,259	1,285
Revolving converted to term loans	0	0
Total loans and leases	2,013	1,464
60-89 days past due | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	447
2020	302	81
2019	143	312
2018	158	695
2017	22	97
Prior	2,196	4,098
Revolving	0	9
Revolving converted to term loans	78	337
Total loans and leases	2,899	6,076
90 days or greater
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	51,869	97,943
90 days or greater | Consumer Portfolio Segment | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	41	330
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	41	330
90 days or greater | Consumer Portfolio Segment | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	225	282
2020	428	4,831
2019	681	3,150
2018	1,998	4,015
2017	744	5,689
Prior	10,129	13,723
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	14,205	31,690
90 days or greater | Consumer Portfolio Segment | Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving	1,957	2,301
Revolving converted to term loans	2,655	5,114
Total loans and leases	4,612	7,415
90 days or greater | Consumer Portfolio Segment | Consumer Auto Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	428	170
2020	297	527
2019	156	217
2018	228	57
2017	87	102
Prior	18	3
Revolving	0	0
Revolving converted to term loans	0	0
Total loans and leases	1,214	1,076
90 days or greater | Consumer Portfolio Segment | Consumer Loan, Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	45	53
2020	7	84
2019	1	8
2018	1	0
2017	0	0
Prior	0	0
Revolving	1,100	1,360
Revolving converted to term loans	0	0
Total loans and leases	1,154	1,505
90 days or greater | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
2021	0	721
2020	483	2,325
2019	222	4,755
2018	275	1,208
2017	403	897
Prior	10,697	19,963
Revolving	28	111
Revolving converted to term loans	1,052	1,046
Total loans and leases	$ 13,160	$ 31,026