Loans and Leases - Allowance for Loan and Leases Losses Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Payment deferral offering period			15 years
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 47,562	$ 54,070	$ 53,709	$ 22,602
Loans and leases charged-off	(3,364)	(4,051)	(4,454)	(8,439)
Recoveries collected	973	652	1,421	968
PCL on loans and leases	(6,008)	4,303	(11,513)	36,637
Ending balance	39,163	54,974	39,163	54,974
Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				3,206
Real estate loans | CRE - nonowner-occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15,777	13,329	19,382	7,960
Loans and leases charged-off	0	0	0	0
Recoveries collected	0	4	0	6
PCL on loans and leases	(3,875)	1,998	(7,480)	7,832
Ending balance	11,902	15,331	11,902	15,331
Real estate loans | CRE - nonowner-occupied | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(467)
Real estate loans | CRE - owner-occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,845	4,192	6,982	2,825
Loans and leases charged-off	(5)	(1,234)	(194)	(1,233)
Recoveries collected	475	0	475	0
PCL on loans and leases	(1,769)	2,125	(2,717)	3,475
Ending balance	4,546	5,083	4,546	5,083
Real estate loans | CRE - owner-occupied | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				16
Real estate loans | Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,280	2,748	1,406	1,114
Loans and leases charged-off	(46)	0	(46)	(114)
Recoveries collected	0	4	0	4
PCL on loans and leases	(204)	(1,125)	(330)	669
Ending balance	1,030	1,627	1,030	1,627
Real estate loans | Home equity lines of credit | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(46)
Real estate loans | Residential mortgage | 1st liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,638	8,316	7,782	2,501
Loans and leases charged-off	(24)	(556)	(25)	(1,284)
Recoveries collected	1	136	1	137
PCL on loans and leases	(995)	302	(3,138)	4,436
Ending balance	4,620	8,198	4,620	8,198
Real estate loans | Residential mortgage | 1st liens | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				2,408
Real estate loans | Residential mortgage | Junior liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	439	517	382	338
Loans and leases charged-off	0	0	0	0
Recoveries collected	0	0	0	0
PCL on loans and leases	(59)	4	(2)	104
Ending balance	380	521	380	521
Real estate loans | Residential mortgage | Junior liens | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				79
Real estate loans | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,124	6,984	2,707	1,230
Loans and leases charged-off	(116)	0	(116)	0
Recoveries collected	1	1	2	2
PCL on loans and leases	(734)	(924)	(318)	5,188
Ending balance	2,275	6,061	2,275	6,061
Real estate loans | Construction | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(359)
Commercial & Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,611	8,734	8,087	3,835
Loans and leases charged-off	(2,592)	(522)	(2,720)	(1,149)
Recoveries collected	269	22	451	37
PCL on loans and leases	2,582	(246)	3,052	5,424
Ending balance	8,870	7,988	8,870	7,988
Commercial & Industrial | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(159)
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	381	341	325	438
Loans and leases charged-off	(156)	(296)	(278)	(590)
Recoveries collected	11	57	26	90
PCL on loans and leases	131	338	294	362
Ending balance	367	440	367	440
Consumer | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				140
Leases
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,467	8,909	6,656	2,361
Loans and leases charged-off	(425)	(1,443)	(1,075)	(4,069)
Recoveries collected	216	428	466	692
PCL on loans and leases	(1,085)	1,831	(874)	9,147
Ending balance	$ 5,173	$ 9,725	$ 5,173	9,725
Leases | Cumulative-effect adjustment due to the adoption of ASU No. 2016-13 | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				$ 1,594