Loans and Leases - Credit Quality (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 876,707	$ 2,001,595
2020	1,415,068	723,898
2019	659,739	395,275
2018	307,382	362,654
2017	316,264	205,604
Prior	354,292	254,149
Revolving loans amortized cost basis	527,130	516,936
Total	4,456,582	4,460,111
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	874,073	1,966,242
2020	1,353,635	707,620
2019	628,808	390,152
2018	301,563	350,602
2017	313,094	201,130
Prior	340,465	238,726
Revolving loans amortized cost basis	512,643	499,565
Total	4,324,281	4,354,037
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,509	31,522
2020	28,288	10,859
2019	26,745	4,002
2018	3,917	577
2017	1,250	2,202
Prior	9,006	7,144
Revolving loans amortized cost basis	7,545	9,565
Total	79,260	65,871
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	125	3,831
2020	33,145	5,419
2019	4,186	1,121
2018	1,902	11,475
2017	1,920	2,272
Prior	4,821	8,279
Revolving loans amortized cost basis	6,942	7,806
Total	53,041	40,203
Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	106	678
2020	651	182
2019	20	259
2018	558	205
2017	10	7
Prior	1,138	1,431
Revolving loans amortized cost basis	624	1,028
Total	3,107	3,790
Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	170,613	267,150
2020	240,610	110,092
2019	83,048	88,792
2018	54,460	64,197
2017	40,056	43,329
Prior	105,126	89,160
Revolving loans amortized cost basis	173,711	180,220
Total	867,624	842,940
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	113,565	165,270
2020	119,795	95,180
2019	78,417	75,400
2018	65,844	39,434
2017	31,737	18,148
Prior	60,602	57,824
Revolving loans amortized cost basis	450,661	441,409
Total	920,621	892,665
Commercial Financial And Agricultural [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	113,440	162,547
2020	117,162	93,967
2019	77,601	74,722
2018	65,416	38,906
2017	31,339	17,371
Prior	58,679	56,053
Revolving loans amortized cost basis	438,655	427,336
Total	902,292	870,902
Commercial Financial And Agricultural [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	2,723
2020	2,633	783
2019	782	316
2018	285	500
2017	383	777
Prior	1,610	1,144
Revolving loans amortized cost basis	6,264	8,318
Total	11,957	14,561
Commercial Financial And Agricultural [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	125	0
2020	0	430
2019	34	362
2018	143	28
2017	15	0
Prior	313	627
Revolving loans amortized cost basis	5,742	5,755
Total	6,372	7,202
Paycheck Protection Program Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2021	165,540	483,773
2020	87,309	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Total	252,849	483,773
Paycheck Protection Program Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	165,540	483,773
2020	87,309	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Total	252,849	483,773
Paycheck Protection Program Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Total	0	0
Paycheck Protection Program Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Total	0	0
Real-Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	411,443	1,094,180
2020	995,788	496,071
2019	475,377	227,853
2018	185,607	279,619
2017	247,648	145,498
Prior	244,663	170,063
Revolving loans amortized cost basis	40,393	45,588
Total	2,600,919	2,458,872
Real-Estate Commercial [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	408,934	1,084,157
2020	957,849	481,997
2019	446,367	223,646
2018	180,449	268,236
2017	245,775	143,041
Prior	236,338	157,503
Revolving loans amortized cost basis	38,710	43,008
Total	2,514,422	2,401,588
Real-Estate Commercial [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,509	6,220
2020	4,794	10,076
2019	25,742	3,498
2018	3,447	0
2017	0	1,250
Prior	5,751	5,870
Revolving loans amortized cost basis	1,281	1,247
Total	43,524	28,161
Real-Estate Commercial [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	3,803
2020	33,145	3,998
2019	3,268	709
2018	1,711	11,383
2017	1,873	1,207
Prior	2,574	6,690
Revolving loans amortized cost basis	402	1,333
Total	42,973	29,123
Real-Estate Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	85,521	138,065
2020	114,873	59,507
2019	46,937	39,009
2018	15,797	113
2017	991	2,950
Prior	3,020	0
Revolving loans amortized cost basis	7,390	3,711
Total	274,529	243,355
Real-Estate Construction [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	85,521	116,840
2020	94,373	59,507
2019	46,937	39,009
2018	15,797	113
2017	199	2,950
Prior	3,020	0
Revolving loans amortized cost basis	7,390	3,711
Total	253,237	222,130
Real-Estate Construction [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	21,225
2020	20,500	0
2019	0	0
2018	0	0
2017	792	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Total	21,292	21,225
Real-Estate Construction [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Total	0	0
Real Estate Residential Secured For Business Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	100,638	120,307
2020	97,303	73,140
2019	59,008	53,013
2018	40,134	43,488
2017	35,888	39,008
Prior	46,007	26,262
Revolving loans amortized cost basis	28,686	26,228
Total	407,664	381,446
Real Estate Residential Secured For Business Purpose [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	100,638	118,925
2020	96,942	72,149
2019	57,903	52,775
2018	39,901	43,347
2017	35,781	37,768
Prior	42,428	25,170
Revolving loans amortized cost basis	27,888	25,510
Total	401,481	375,644
Real Estate Residential Secured For Business Purpose [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	1,354
2020	361	0
2019	221	188
2018	185	77
2017	75	175
Prior	1,645	130
Revolving loans amortized cost basis	0	0
Total	2,487	1,924
Real Estate Residential Secured For Business Purpose [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	28
2020	0	991
2019	884	50
2018	48	64
2017	32	1,065
Prior	1,934	962
Revolving loans amortized cost basis	798	718
Total	3,696	3,878
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	130,477	192,653
2020	176,418	61,880
2019	43,250	56,370
2018	30,866	50,983
2017	31,029	38,975
Prior	100,473	85,502
Revolving loans amortized cost basis	817	1,237
Total	513,330	487,600
Real Estate Residential Secured For Personal Purpose [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	106	666
2020	651	0
2019	0	56
2018	373	0
2017	0	0
Prior	1,030	1,364
Revolving loans amortized cost basis	0	0
Total	2,160	2,086
Real Estate Residential Secured For Personal Purpose [Member] | Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	130,371	191,987
2020	175,767	61,880
2019	43,250	56,314
2018	30,493	50,983
2017	31,029	38,975
Prior	99,443	84,138
Revolving loans amortized cost basis	817	1,237
Total	511,170	485,514
Real Estate Home Equity Secured For Personal Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	665	1,195
2020	1,017	815
2019	528	1,027
2018	728	1,160
2017	963	518
Prior	2,133	2,225
Revolving loans amortized cost basis	153,984	159,669
Total	160,018	166,609
Real Estate Home Equity Secured For Personal Purpose [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	198
2018	183	0
2017	0	0
Prior	28	36
Revolving loans amortized cost basis	624	866
Total	835	1,100
Real Estate Home Equity Secured For Personal Purpose [Member] | Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	665	1,195
2020	1,017	815
2019	528	829
2018	545	1,160
2017	963	518
Prior	2,105	2,189
Revolving loans amortized cost basis	153,360	158,803
Total	159,183	165,509
Loans to Individuals [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,089	1,795
2020	1,150	1,425
2019	1,013	970
2018	670	441
2017	247	220
Prior	2,142	2,289
Revolving loans amortized cost basis	19,534	20,342
Total	25,845	27,482
Loans to Individuals [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	19	23
Revolving loans amortized cost basis	0	162
Total	19	185
Loans to Individuals [Member] | Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,089	1,795
2020	1,150	1,425
2019	1,013	970
2018	670	441
2017	247	220
Prior	2,123	2,266
Revolving loans amortized cost basis	19,534	20,180
Total	25,826	27,297
Lease Financings [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	38,488	72,185
2020	62,676	46,154
2019	38,277	30,684
2018	22,754	11,818
2017	7,827	3,623
Prior	1,516	575
Revolving loans amortized cost basis	0	0
Total	171,538	165,039
Lease Financings [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	12
2020	0	182
2019	20	5
2018	2	205
2017	10	7
Prior	61	8
Revolving loans amortized cost basis	0	0
Total	93	419
Lease Financings [Member] | Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	38,488	72,173
2020	62,676	45,972
2019	38,257	30,679
2018	22,752	11,613
2017	7,817	3,616
Prior	1,455	567
Revolving loans amortized cost basis	0	0
Total	$ 171,445	$ 164,620