Loans and Leases and Allowance for Credit Losses - Risk category of term loans by vintage year (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	$ 4,181,120	$ 4,219,098
Originated in prior year	2,679,991	1,865,899
Originated two years prior	1,302,346	1,433,719
Originated three years prior	785,543	874,745
Originated four years prior	529,286	759,094
Originated five or more years prior	869,486	789,304
Revolvers	1,352,903	1,368,554
Revolvers converted to term loans	59,671	60,402
Total loans	11,760,346	11,370,815
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	4,056,001	4,093,543
Originated in prior year	2,613,439	1,773,077
Originated two years prior	1,230,851	1,352,195
Originated three years prior	686,372	815,046
Originated four years prior	467,977	669,394
Originated five or more years prior	805,770	753,530
Revolvers	1,345,755	1,338,027
Revolvers converted to term loans	54,067	52,038
Total loans	11,260,232	10,846,850
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	87,231	67,047
Originated in prior year	48,922	63,506
Originated two years prior	54,403	47,167
Originated three years prior	49,742	47,185
Originated four years prior	36,461	47,536
Originated five or more years prior	24,876	16,559
Revolvers	2,490	6,564
Revolvers converted to term loans	286	1,681
Total loans	304,411	297,245
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	37,888	58,508
Originated in prior year	17,630	29,316
Originated two years prior	17,092	34,357
Originated three years prior	49,429	12,514
Originated four years prior	24,848	42,164
Originated five or more years prior	38,840	19,215
Revolvers	4,658	23,963
Revolvers converted to term loans	5,318	6,683
Total loans	195,703	226,720
Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	2,892,353	3,343,874
Originated in prior year	2,197,828	1,521,690
Originated two years prior	1,109,201	1,208,471
Originated three years prior	614,611	685,027
Originated four years prior	391,842	540,614
Originated five or more years prior	573,932	508,536
Revolvers	636,889	620,686
Revolvers converted to term loans	35,014	28,924
Total loans	8,451,670	8,457,822
Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	87,231	67,047
Originated in prior year	48,922	63,506
Originated two years prior	54,403	47,167
Originated three years prior	49,742	47,185
Originated four years prior	36,461	47,536
Originated five or more years prior	24,876	16,559
Revolvers	2,490	6,564
Revolvers converted to term loans	286	1,681
Total loans	304,411	297,245
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	34,105	56,353
Originated in prior year	16,029	27,076
Originated two years prior	14,227	31,080
Originated three years prior	46,123	11,081
Originated four years prior	23,621	41,283
Originated five or more years prior	33,740	12,877
Revolvers	4,326	23,698
Revolvers converted to term loans	2,304	2,373
Total loans	174,475	205,821
Commercial | Owner occupied commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	643,151	707,501
Originated in prior year	674,124	368,615
Originated two years prior	278,702	231,316
Originated three years prior	153,233	197,778
Originated four years prior	139,584	201,362
Originated five or more years prior	267,460	229,667
Revolvers	68,354	56,273
Revolvers converted to term loans	17,150	9,072
Total loans	2,241,758	2,001,584
Commercial | Owner occupied commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	7,772	8,759
Originated in prior year	2,979	4,088
Originated two years prior	16,639	4,221
Originated three years prior	4,374	10,025
Originated four years prior	6,007	11,138
Originated five or more years prior	2,641	4,728
Revolvers	248	100
Revolvers converted to term loans	286	0
Total loans	40,946	43,059
Commercial | Owner occupied commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	11,987	6,586
Originated in prior year	1,049	10,473
Originated two years prior	4,216	7,596
Originated three years prior	3,712	3,717
Originated four years prior	5,829	6,753
Originated five or more years prior	11,088	8,473
Revolvers	0	1,528
Revolvers converted to term loans	1,100	674
Total loans	38,981	45,800
Commercial | Income producing commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	668,322	815,799
Originated in prior year	678,487	376,911
Originated two years prior	333,911	361,539
Originated three years prior	221,218	277,769
Originated four years prior	165,563	206,068
Originated five or more years prior	219,459	198,080
Revolvers	41,157	28,542
Revolvers converted to term loans	11,830	12,128
Total loans	2,339,947	2,276,836
Commercial | Income producing commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	64,139	35,471
Originated in prior year	27,875	42,831
Originated two years prior	21,875	39,954
Originated three years prior	22,292	13,238
Originated four years prior	18,415	24,164
Originated five or more years prior	21,880	11,337
Revolvers	0	0
Revolvers converted to term loans	0	1,681
Total loans	176,476	168,676
Commercial | Income producing commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	15,485	45,125
Originated in prior year	12,618	8,940
Originated two years prior	3,779	2,179
Originated three years prior	29,212	5,034
Originated four years prior	6,726	31,211
Originated five or more years prior	16,531	2,652
Revolvers	0	0
Revolvers converted to term loans	84	97
Total loans	84,435	95,238
Commercial | Commercial & industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	638,567	1,092,767
Originated in prior year	270,150	287,857
Originated two years prior	178,944	263,439
Originated three years prior	136,281	115,790
Originated four years prior	50,567	92,968
Originated five or more years prior	72,904	58,359
Revolvers	514,750	515,593
Revolvers converted to term loans	4,361	3,777
Total loans	1,866,524	2,430,550
Commercial | Commercial & industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	1,037	1,451
Originated in prior year	1,831	16,315
Originated two years prior	2,740	2,176
Originated three years prior	597	630
Originated four years prior	273	459
Originated five or more years prior	303	17
Revolvers	2,242	6,464
Revolvers converted to term loans	0	0
Total loans	9,023	27,512
Commercial | Commercial & industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	2,741	1,545
Originated in prior year	1,615	5,536
Originated two years prior	5,284	6,193
Originated three years prior	12,685	1,684
Originated four years prior	1,232	1,292
Originated five or more years prior	5,863	1,485
Revolvers	4,326	22,170
Revolvers converted to term loans	869	593
Total loans	34,615	40,498
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	378,695	314,154
Originated in prior year	303,154	217,643
Originated two years prior	149,740	226,308
Originated three years prior	40,625	53,708
Originated four years prior	22,983	30,812
Originated five or more years prior	13,206	21,985
Revolvers	12,628	20,278
Revolvers converted to term loans	1,673	3,947
Total loans	922,704	888,835
Commercial | Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	14,283	21,366
Originated in prior year	16,237	272
Originated two years prior	13,149	816
Originated three years prior	22,479	23,292
Originated four years prior	11,766	11,775
Originated five or more years prior	52	477
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	77,966	57,998
Commercial | Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	3,464	2,466
Originated in prior year	157	735
Originated two years prior	272	13,741
Originated three years prior	11	340
Originated four years prior	9,750	1,931
Originated five or more years prior	255	250
Revolvers	0	0
Revolvers converted to term loans	251	1,009
Total loans	14,160	20,472
Commercial | Equipment financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	563,618	413,653
Originated in prior year	271,913	270,664
Originated two years prior	167,904	125,869
Originated three years prior	63,254	39,982
Originated four years prior	13,145	9,404
Originated five or more years prior	903	445
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	1,080,737	860,017
Commercial | Equipment financing | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	0	0
Commercial | Equipment financing | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	428	631
Originated in prior year	590	1,392
Originated two years prior	676	1,371
Originated three years prior	503	306
Originated four years prior	84	96
Originated five or more years prior	3	17
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	2,284	3,813
Residential | Residential mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	781,007	468,945
Originated in prior year	370,092	195,213
Originated two years prior	108,091	125,492
Originated three years prior	64,346	120,944
Originated four years prior	71,552	122,013
Originated five or more years prior	221,131	230,771
Revolvers	9	18
Revolvers converted to term loans	3,915	5,393
Total loans	1,620,143	1,268,789
Residential | Residential mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	0	0
Residential | Residential mortgage | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	3,339	2,049
Originated in prior year	1,585	2,106
Originated two years prior	2,813	3,174
Originated three years prior	3,229	1,369
Originated four years prior	1,205	679
Originated five or more years prior	4,744	5,860
Revolvers	0	0
Revolvers converted to term loans	827	894
Total loans	17,742	16,131
Residential | HELOC | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	676,545	675,878
Revolvers converted to term loans	14,994	17,581
Total loans	691,539	693,459
Residential | HELOC | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	0	0
Residential | HELOC | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	329	265
Revolvers converted to term loans	2,166	3,393
Total loans	2,495	3,658
Residential | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	325,111	225,727
Originated in prior year	16,301	30,646
Originated two years prior	2,802	4,026
Originated three years prior	2,278	4,544
Originated four years prior	3,144	3,172
Originated five or more years prior	9,352	12,546
Revolvers	0	0
Revolvers converted to term loans	33	64
Total loans	359,021	280,725
Residential | Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	0	0
Residential | Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	407	106
Originated in prior year	0	37
Originated two years prior	30	54
Originated three years prior	51	4
Originated four years prior	0	124
Originated five or more years prior	306	380
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	794	705
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	57,530	54,997
Originated in prior year	29,218	25,528
Originated two years prior	10,757	14,206
Originated three years prior	5,137	4,531
Originated four years prior	1,439	3,595
Originated five or more years prior	1,355	1,677
Revolvers	32,312	41,445
Revolvers converted to term loans	111	76
Total loans	137,859	146,055
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0	0
Originated in prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated five or more years prior	0	0
Revolvers	0	0
Revolvers converted to term loans	0	0
Total loans	0	0
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	37	0
Originated in prior year	16	97
Originated two years prior	22	49
Originated three years prior	26	60
Originated four years prior	22	78
Originated five or more years prior	50	98
Revolvers	3	0
Revolvers converted to term loans	21	23
Total loans	$ 197	$ 405