Loans, Credit Risk Profile Based on Rating Category and Payment Activity and on Performing and Nonperforming Status, Segregated by Class (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Credit Risk Profile, Segregated by Class [Abstract]
Total	$ 3,448,493	$ 3,554,211
Consumer mortgage loans secured by real estate properties for which formal foreclosure proceedings are in process	2,100	2,900
Commercial [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	365,320	599,119
2020/2019	354,621	253,159
2019/2018	227,857	200,954
2018/2017	167,641	171,851
2017/2016	150,057	171,600
Prior	374,364	304,879
Revolving Loans	181,869	191,965
Total	1,821,729	1,893,527
Commercial [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	344,326	549,796
2020/2019	311,013	233,331
2019/2018	207,259	168,142
2018/2017	146,208	151,432
2017/2016	135,397	134,594
Prior	296,276	257,363
Revolving Loans	172,458	183,151
Total	$ 1,612,937	1,677,809
Commercial [Member] | Pass [Member] | Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Review period for loans	12 months
Commercial [Member] | Pass [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Review period for loans	18 months
Commercial [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	$ 13,204	33,686
2020/2019	33,356	8,273
2019/2018	14,185	12,009
2018/2017	12,712	11,985
2017/2016	10,077	24,744
Prior	47,886	24,369
Revolving Loans	8,775	8,290
Total	140,195	123,356
Commercial [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	1,946
2020/2019	238	4,241
2019/2018	0	15,023
2018/2017	223	323
2017/2016	139	496
Prior	283	3,382
Revolving Loans	20	239
Total	903	25,650
Commercial [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	7,790	13,691
2020/2019	10,014	7,314
2019/2018	6,413	5,780
2018/2017	8,498	8,111
2017/2016	4,444	11,766
Prior	29,887	19,737
Revolving Loans	616	285
Total	67,662	66,684
Commercial [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	32	28
Revolving Loans	0	0
Total	32	28
Commercial [Member] | Hotel/Motel [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	30,395	35,458
2020/2019	34,998	75,003
2019/2018	63,285	40,395
2018/2017	31,068	42,866
2017/2016	38,524	31,937
Prior	63,052	35,040
Revolving Loans	100	0
Total	261,422	260,699
Commercial [Member] | Hotel/Motel [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	20,997	11,507
2020/2019	11,388	70,504
2019/2018	56,087	27,453
2018/2017	27,773	39,651
2017/2016	34,688	6,357
Prior	25,390	22,372
Revolving Loans	100	0
Total	176,423	177,844
Commercial [Member] | Hotel/Motel [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	9,398	23,951
2020/2019	23,610	2,506
2019/2018	7,198	3,366
2018/2017	0	2,102
2017/2016	2,723	16,740
Prior	23,929	7,422
Revolving Loans		0
Total	66,858	56,087
Commercial [Member] | Hotel/Motel [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	1,993
2019/2018	0	9,576
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	11,569
Commercial [Member] | Hotel/Motel [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	3,295	1,113
2017/2016	1,113	8,840
Prior	13,733	5,246
Revolving Loans	0	0
Total	18,141	15,199
Commercial [Member] | Hotel/Motel [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Real Estate Residential [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	71,429	93,339
2020/2019	74,576	43,419
2019/2018	39,240	33,931
2018/2017	27,857	24,570
2017/2016	17,640	27,029
Prior	69,414	54,988
Revolving Loans	9,471	10,652
Total	309,627	287,928
Commercial [Member] | Commercial Real Estate Residential [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	66,812	85,403
2020/2019	68,379	39,238
2019/2018	35,387	29,179
2018/2017	23,791	17,390
2017/2016	14,006	21,272
Prior	55,669	46,419
Revolving Loans	9,278	10,470
Total	273,322	249,371
Commercial [Member] | Commercial Real Estate Residential [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	725	1,714
2020/2019	3,403	2,214
2019/2018	3,167	2,438
2018/2017	2,174	2,962
2017/2016	2,982	4,520
Prior	10,184	5,306
Revolving Loans	168	182
Total	22,803	19,336
Commercial [Member] | Commercial Real Estate Residential [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	1,921
2020/2019	238	1,361
2019/2018	0	323
2018/2017	202	142
2017/2016	139	129
Prior	0	0
Revolving Loans	0	0
Total	579	3,876
Commercial [Member] | Commercial Real Estate Residential [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	3,892	4,301
2020/2019	2,556	606
2019/2018	686	1,991
2018/2017	1,690	4,076
2017/2016	513	1,108
Prior	3,561	3,263
Revolving Loans	25	0
Total	12,923	15,345
Commercial [Member] | Commercial Real Estate Residential [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Real Estate Nonresidential [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	96,946	137,592
2020/2019	121,842	107,418
2019/2018	102,286	86,299
2018/2017	70,670	89,244
2017/2016	81,349	105,118
Prior	223,250	191,112
Revolving Loans	21,995	26,455
Total	718,338	743,238
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	92,543	125,205
2020/2019	110,759	97,204
2019/2018	94,095	77,685
2018/2017	63,201	80,416
2017/2016	75,158	100,740
Prior	198,595	165,839
Revolving Loans	21,221	25,524
Total	655,572	672,613
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	2,081	5,133
2020/2019	4,721	3,175
2019/2018	2,778	5,075
2018/2017	4,170	6,366
2017/2016	3,759	3,020
Prior	12,479	11,046
Revolving Loans	550	601
Total	30,538	34,416
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	887
2019/2018	0	68
2018/2017	17	0
2017/2016	0	0
Prior	283	3,382
Revolving Loans	20	115
Total	320	4,452
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	2,322	7,254
2020/2019	6,362	6,152
2019/2018	5,413	3,471
2018/2017	3,282	2,462
2017/2016	2,432	1,358
Prior	11,861	10,817
Revolving Loans	204	215
Total	31,876	31,729
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	32	28
Revolving Loans	0	0
Total	32	28
Commercial [Member] | Dealer Floorplans [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	67,466	69,087
Total	67,466	69,087
Commercial [Member] | Dealer Floorplans [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	67,175	68,610
Total	67,175	68,610
Commercial [Member] | Dealer Floorplans [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	291	477
Total	291	477
Commercial [Member] | Dealer Floorplans [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Dealer Floorplans [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Dealer Floorplans [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Other [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	54,735	80,063
2020/2019	59,037	27,319
2019/2018	23,046	40,329
2018/2017	38,046	15,171
2017/2016	12,544	7,516
Prior	18,648	23,739
Revolving Loans	82,837	85,771
Total	288,893	279,908
Commercial [Member] | Commercial Other [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	52,159	75,014
2020/2019	56,319	26,385
2019/2018	21,690	33,825
2018/2017	31,443	13,975
2017/2016	11,545	6,225
Prior	16,622	22,733
Revolving Loans	74,684	78,547
Total	264,462	256,704
Commercial [Member] | Commercial Other [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	1,000	2,888
2020/2019	1,622	378
2019/2018	1,042	1,130
2018/2017	6,368	555
2017/2016	613	464
Prior	1,294	595
Revolving Loans	7,766	7,030
Total	19,705	13,040
Commercial [Member] | Commercial Other [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	25
2020/2019	0	0
2019/2018	0	5,056
2018/2017	4	181
2017/2016	0	367
Prior	0	0
Revolving Loans	0	124
Total	4	5,753
Commercial [Member] | Commercial Other [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	1,576	2,136
2020/2019	1,096	556
2019/2018	314	318
2018/2017	231	460
2017/2016	386	460
Prior	732	411
Revolving Loans	387	70
Total	4,722	4,411
Commercial [Member] | Commercial Other [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Unsecured SBA PPP [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	111,815	252,667
2020/2019	64,168	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	175,983	252,667
Commercial [Member] | Commercial Unsecured SBA PPP [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	111,815	252,667
2020/2019	64,168	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	175,983	252,667
Commercial [Member] | Commercial Unsecured SBA PPP [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Unsecured SBA PPP [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Unsecured SBA PPP [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial [Member] | Commercial Unsecured SBA PPP [Member] | Doubtful [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Residential [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	92,685	214,629
2020/2019	192,722	119,737
2019/2018	91,334	57,115
2018/2017	46,437	61,229
2017/2016	49,870	48,628
Prior	301,312	295,878
Revolving Loans	90,840	91,113
Total	865,200	888,329
Residential [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	92,685	214,629
2020/2019	192,722	119,301
2019/2018	91,023	56,812
2018/2017	46,189	60,915
2017/2016	49,610	48,276
Prior	293,850	287,932
Revolving Loans	90,350	90,724
Total	856,429	878,589
Residential [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	436
2019/2018	311	303
2018/2017	248	314
2017/2016	260	352
Prior	7,462	7,946
Revolving Loans	490	389
Total	8,771	9,740
Residential [Member] | Real Estate Mortgage [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	92,685	214,629
2020/2019	192,722	119,737
2019/2018	91,334	57,115
2018/2017	46,437	61,229
2017/2016	49,870	48,605
Prior	289,601	283,244
Revolving Loans	0	0
Total	762,649	784,559
Residential [Member] | Real Estate Mortgage [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	92,685	214,629
2020/2019	192,722	119,301
2019/2018	91,023	56,812
2018/2017	46,189	60,915
2017/2016	49,610	48,253
Prior	282,639	275,883
Revolving Loans	0	0
Total	754,868	775,793
Residential [Member] | Real Estate Mortgage [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	436
2019/2018	311	303
2018/2017	248	314
2017/2016	260	352
Prior	6,962	7,361
Revolving Loans	0	0
Total	7,781	8,766
Residential [Member] | Home Equity Lines [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	23
Prior	11,711	12,634
Revolving Loans	90,840	91,113
Total	102,551	103,770
Residential [Member] | Home Equity Lines [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	23
Prior	11,211	12,049
Revolving Loans	90,350	90,724
Total	101,561	102,796
Residential [Member] | Home Equity Lines [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	500	585
Revolving Loans	490	389
Total	990	974
Consumer [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	172,990	374,205
2020/2019	295,483	168,288
2019/2018	130,184	119,061
2018/2017	89,189	59,881
2017/2016	41,345	30,388
Prior	32,373	20,532
Revolving Loans	0	0
Total	761,564	772,355
Consumer [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	172,976	374,171
2020/2019	295,469	168,116
2019/2018	130,160	118,943
2018/2017	89,155	59,822
2017/2016	41,334	30,358
Prior	32,362	20,521
Revolving Loans	0	0
Total	761,456	771,931
Consumer [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	14	34
2020/2019	14	172
2019/2018	24	118
2018/2017	34	59
2017/2016	11	30
Prior	11	11
Revolving Loans	0	0
Total	108	424
Consumer [Member] | Consumer Direct [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	38,010	72,684
2020/2019	54,098	33,050
2019/2018	24,490	18,461
2018/2017	13,786	9,164
2017/2016	6,099	6,581
Prior	15,056	12,364
Revolving Loans	0	0
Total	151,539	152,304
Consumer [Member] | Consumer Direct [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	38,010	72,677
2020/2019	54,089	32,993
2019/2018	24,466	18,461
2018/2017	13,752	9,157
2017/2016	6,099	6,581
Prior	15,056	12,364
Revolving Loans	0	0
Total	151,472	152,233
Consumer [Member] | Consumer Direct [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	7
2020/2019	9	57
2019/2018	24	0
2018/2017	34	7
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	67	71
Consumer [Member] | Consumer Indirect [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	134,980	301,521
2020/2019	241,385	135,238
2019/2018	105,694	100,600
2018/2017	75,403	50,717
2017/2016	35,246	23,807
Prior	17,317	8,168
Revolving Loans	0	0
Total	610,025	620,051
Consumer [Member] | Consumer Indirect [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	134,966	301,494
2020/2019	241,380	135,123
2019/2018	105,694	100,482
2018/2017	75,403	50,665
2017/2016	35,235	23,777
Prior	17,306	8,157
Revolving Loans	0	0
Total	609,984	619,698
Consumer [Member] | Consumer Indirect [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	14	27
2020/2019	5	115
2019/2018	0	118
2018/2017	0	52
2017/2016	11	30
Prior	11	11
Revolving Loans	0	0
Total	$ 41	$ 353