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) $ in Thousands	Dec. 31, 2020 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 3,669,902
2019	1,701,148
2018	1,078,600
2017	879,110
2016	932,627
Prior	1,545,761
Revolving Loans	2,091,726
Revolving Loans Converted to Term Loans	41,146
Total Loans and Leases	11,940,020
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,078,659
2019	764,275
2018	531,323
2017	315,087
2016	343,502
Prior	568,609
Revolving Loans	498,207
Revolving Loans Converted to Term Loans	1,024
Total Loans and Leases	5,100,686
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2020	988,373
2019	150,800
2018	151,734
2017	50,162
2016	52,483
Prior	87,530
Revolving Loans	393,187
Revolving Loans Converted to Term Loans	1,024
Total Loans and Leases	1,875,293
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	944,463
2019	149,024
2018	149,468
2017	49,385
2016	52,354
Prior	68,269
Revolving Loans	342,339
Revolving Loans Converted to Term Loans	847
Total Loans and Leases	1,756,149
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	11,702
2019	42
2018	0
2017	0
2016	110
Prior	95
Revolving Loans	32,319
Revolving Loans Converted to Term Loans	52
Total Loans and Leases	44,320
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	32,208
2019	1,734
2018	2,266
2017	777
2016	19
Prior	19,166
Revolving Loans	18,529
Revolving Loans Converted to Term Loans	125
Total Loans and Leases	74,824
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
2020	963,839
2019	487,545
2018	353,437
2017	252,548
2016	281,267
Prior	439,324
Revolving Loans	76,869
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	2,854,829
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	847,676
2019	458,472
2018	350,363
2017	245,157
2016	267,860
Prior	425,157
Revolving Loans	76,869
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	2,671,554
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	66,523
2019	28,418
2018	291
2017	7,117
2016	8,665
Prior	5,035
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	116,049
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	49,640
2019	655
2018	2,783
2017	274
2016	4,742
Prior	9,132
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	67,226
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
2020	106,508
2019	105,731
2018	11,275
2017	8,133
2016	0
Prior	0
Revolving Loans	28,151
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	259,798
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	106,508
2019	105,731
2018	11,275
2017	8,133
2016	0
Prior	0
Revolving Loans	28,151
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	259,798
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
2020	19,939
2019	20,199
2018	14,877
2017	4,244
2016	9,752
Prior	41,755
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	110,766
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	19,906
2019	20,132
2018	13,785
2017	4,202
2016	9,657
Prior	41,755
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	109,437
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	33
2019	67
2018	1,092
2017	42
2016	95
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	1,329
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,591,243
2019	936,873
2018	547,277
2017	564,023
2016	589,125
Prior	977,152
Revolving Loans	1,593,519
Revolving Loans Converted to Term Loans	40,122
Total Loans and Leases	6,839,334
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,300,831
2019	576,746
2018	295,522
2017	455,197
2016	545,798
Prior	956,419
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	4,130,513
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,300,831
2019	576,452
2018	295,522
2017	454,165
2016	545,798
Prior	954,120
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	4,126,888
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	294
2018	0
2017	1,032
2016	0
Prior	2,299
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	3,625
Consumer | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	4,537
Revolving Loans	1,561,364
Revolving Loans Converted to Term Loans	38,637
Total Loans and Leases	1,604,538
Consumer | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	4,449
Revolving Loans	1,556,671
Revolving Loans Converted to Term Loans	37,559
Total Loans and Leases	1,598,679
Consumer | Home Equity Loan | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	88
Revolving Loans	4,693
Revolving Loans Converted to Term Loans	1,078
Total Loans and Leases	5,859
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2020	219,319
2019	214,159
2018	158,387
2017	68,889
2016	34,060
Prior	13,986
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	708,800
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	219,218
2019	213,914
2018	158,216
2017	68,776
2016	33,899
Prior	13,850
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	707,873
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	101
2019	245
2018	171
2017	113
2016	161
Prior	136
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	927
Consumer | Other Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	71,093
2019	145,968
2018	93,368
2017	39,937
2016	9,267
Prior	2,210
Revolving Loans	32,155
Revolving Loans Converted to Term Loans	1,485
Total Loans and Leases	395,483
Consumer | Other Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	71,042
2019	145,549
2018	92,993
2017	39,770
2016	9,225
Prior	2,189
Revolving Loans	32,070
Revolving Loans Converted to Term Loans	1,485
Total Loans and Leases	394,323
Consumer | Other Loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	51
2019	419
2018	375
2017	167
2016	42
Prior	21
Revolving Loans	85
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	$ 1,160