Loans and Leases and the Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans and Leases by Credit Quality Indicator, Loan Class, and Year of Origination (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	$ 1,104,364	$ 3,669,902
2020	3,493,304	1,701,148
2019	1,501,891	1,078,600
2018	981,978	879,110
2017	774,103	932,627
Prior	2,232,261	1,545,761
Revolving Loans	2,014,375	2,091,726
Revolving Loans Converted to Term Loans	38,427	41,146
Total Loans and Leases	12,140,703	11,940,020
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	541,378	2,078,659
2020	1,969,730	764,275
2019	667,010	531,323
2018	499,724	315,087
2017	279,923	343,502
Prior	853,064	568,609
Revolving Loans	447,691	498,207
Revolving Loans Converted to Term Loans	851	1,024
Total Loans and Leases	5,259,371	5,100,686
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	339,006	988,373
2020	909,994	150,800
2019	118,943	151,734
2018	130,655	50,162
2017	43,264	52,483
Prior	125,694	87,530
Revolving Loans	345,574	393,187
Revolving Loans Converted to Term Loans	851	1,024
Total Loans and Leases	2,013,981	1,875,293
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	338,648	944,463
2020	868,969	149,024
2019	116,796	149,468
2018	116,999	49,385
2017	42,553	52,354
Prior	106,466	68,269
Revolving Loans	295,977	342,339
Revolving Loans Converted to Term Loans	720	847
Total Loans and Leases	1,887,128	1,756,149
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	88	11,702
2020	32,548	42
2019	2,040	0
2018	0	0
2017	0	110
Prior	364	95
Revolving Loans	27,586	32,319
Revolving Loans Converted to Term Loans	40	52
Total Loans and Leases	62,666	44,320
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	270	32,208
2020	8,477	1,734
2019	107	2,266
2018	13,656	777
2017	711	19
Prior	18,864	19,166
Revolving Loans	22,011	18,529
Revolving Loans Converted to Term Loans	91	125
Total Loans and Leases	64,187	74,824
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	153,492	963,839
2020	933,839	487,545
2019	438,964	353,437
2018	343,980	252,548
2017	232,288	281,267
Prior	682,764	439,324
Revolving Loans	73,919	76,869
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	2,859,246	2,854,829
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	150,533	847,676
2020	830,847	458,472
2019	409,973	350,363
2018	340,907	245,157
2017	224,916	267,860
Prior	651,705	425,157
Revolving Loans	73,919	76,869
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	2,682,800	2,671,554
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	2,101	66,523
2020	87,109	28,418
2019	28,340	291
2018	3,073	7,117
2017	7,100	8,665
Prior	18,364	5,035
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	146,087	116,049
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	858	49,640
2020	15,883	655
2019	651	2,783
2018	0	274
2017	272	4,742
Prior	12,695	9,132
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	30,359	67,226
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	44,556	106,508
2020	106,654	105,731
2019	89,590	11,275
2018	11,272	8,133
2017	894	0
Prior	0	0
Revolving Loans	28,198	28,151
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	281,164	259,798
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	44,556	106,508
2020	106,654	105,731
2019	89,590	11,275
2018	11,272	8,133
2017	894	0
Prior	0	0
Revolving Loans	28,198	28,151
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	281,164	259,798
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	4,324	19,939
2020	19,243	20,199
2019	19,513	14,877
2018	13,817	4,244
2017	3,477	9,752
Prior	44,606	41,755
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	104,980	110,766
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	4,324	19,906
2020	19,212	20,132
2019	19,450	13,785
2018	12,764	4,202
2017	3,441	9,657
Prior	44,528	41,755
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	103,719	109,437
Commercial | Lease Financing | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0
2020	31
2019	47
2018	92
2017	36
Prior	78
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	284
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	33
2020	0	67
2019	16	1,092
2018	961	42
2017	0	95
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	977	1,329
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	562,986	1,591,243
2020	1,523,574	936,873
2019	834,881	547,277
2018	482,254	564,023
2017	494,180	589,125
Prior	1,379,197	977,152
Revolving Loans	1,566,684	1,593,519
Revolving Loans Converted to Term Loans	37,576	40,122
Total Loans and Leases	6,881,332	6,839,334
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	461,424	1,300,831
2020	1,258,849	576,746
2019	507,378	295,522
2018	260,167	455,197
2017	402,453	545,798
Prior	1,326,705	956,419
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,216,976	4,130,513
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	461,424	1,300,831
2020	1,258,849	576,452
2019	507,084	295,522
2018	259,764	454,165
2017	401,540	545,798
Prior	1,325,854	954,120
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,214,515	4,126,888
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	294
2019	294	0
2018	403	1,032
2017	913	0
Prior	851	2,299
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	2,461	3,625
Consumer | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	4,307	4,537
Revolving Loans	1,537,043	1,561,364
Revolving Loans Converted to Term Loans	36,150	38,637
Total Loans and Leases	1,577,500	1,604,538
Consumer | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	4,233	4,449
Revolving Loans	1,531,403	1,556,671
Revolving Loans Converted to Term Loans	35,016	37,559
Total Loans and Leases	1,570,652	1,598,679
Consumer | Home Equity Loan | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	74	88
Revolving Loans	5,640	4,693
Revolving Loans Converted to Term Loans	1,134	1,078
Total Loans and Leases	6,848	5,859
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	78,416	219,319
2020	198,956	214,159
2019	194,479	158,387
2018	140,847	68,889
2017	59,088	34,060
Prior	38,621	13,986
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	710,407	708,800
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	78,416	219,218
2020	198,814	213,914
2019	194,351	158,216
2018	140,735	68,776
2017	58,966	33,899
Prior	38,521	13,850
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	709,803	707,873
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	101
2020	142	245
2019	128	171
2018	112	113
2017	122	161
Prior	100	136
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	604	927
Consumer | Other Loans
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	23,146	71,093
2020	65,769	145,968
2019	133,024	93,368
2018	81,240	39,937
2017	32,639	9,267
Prior	9,564	2,210
Revolving Loans	29,641	32,155
Revolving Loans Converted to Term Loans	1,426	1,485
Total Loans and Leases	376,449	395,483
Consumer | Other Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	23,146	71,042
2020	65,620	145,549
2019	132,730	92,993
2018	81,022	39,770
2017	32,567	9,225
Prior	9,534	2,189
Revolving Loans	29,581	32,070
Revolving Loans Converted to Term Loans	1,421	1,485
Total Loans and Leases	375,621	394,323
Consumer | Other Loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	51
2020	149	419
2019	294	375
2018	218	167
2017	72	42
Prior	30	21
Revolving Loans	60	85
Revolving Loans Converted to Term Loans	5	0
Total Loans and Leases	$ 828	$ 1,160