Loans, Credit Risk Profile Based on Rating Category and Payment Activity and on Performing and Nonperforming Status, Segregated by Class (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Credit Risk Profile, Segregated by Class [Abstract]
Total	$ 3,398,229	$ 3,554,211
Consumer mortgage loans secured by real estate properties for which formal foreclosure proceedings are in process	1,400	2,900
Commercial [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	457,363	599,119
2020/2019	269,648	253,159
2019/2018	221,388	200,954
2018/2017	152,046	171,851
2017/2016	144,065	171,600,000
Prior	340,810	304,879
Revolving Loans	177,481	191,965
Total	1,762,801	1,893,527
Commercial [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	422,008	549,796
2020/2019	237,811	233,331
2019/2018	200,102	168,142
2018/2017	129,487	151,432
2017/2016	132,317	134,594
Prior	272,847	257,363
Revolving Loans	163,713	183,151
Total	$ 1,558,285	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	$ 22,616	33,686
2020/2019	21,750	8,273
2019/2018	16,051	12,009
2018/2017	15,801	11,985
2017/2016	7,446	24,744
Prior	53,345	24,369
Revolving Loans	12,712	8,290
Total	149,721	123,356
Commercial [Member] | OAEM [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	1,946
2020/2019	0	4,241
2019/2018	551	15,023
2018/2017	389	323
2017/2016	154	496
Prior	272	3,382
Revolving Loans	502	239
Total	1,868	25,650
Commercial [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	12,739	13,691
2020/2019	10,087	7,314
2019/2018	4,684	5,780
2018/2017	6,369	8,111
2017/2016	4,148	11,766
Prior	14,315	19,737
Revolving Loans	554	285
Total	52,896	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	31	28
Revolving Loans	0	0
Total	31	28
Commercial [Member] | Hotel/Motel [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	37,959	35,458
2020/2019	25,434	75,003
2019/2018	63,059	40,395
2018/2017	31,112	42,866
2017/2016	38,120	31,937
Prior	57,177	35,040
Revolving Loans	90	0
Total	252,951	260,699
Commercial [Member] | Hotel/Motel [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	28,642	11,507
2020/2019	11,297	70,504
2019/2018	54,177	27,453
2018/2017	18,893	39,651
2017/2016	34,319	6,357
Prior	25,001	22,372
Revolving Loans	90	0
Total	172,419	177,844
Commercial [Member] | Hotel/Motel [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	9,317	23,951
2020/2019	14,137	2,506
2019/2018	8,882	3,366
2018/2017	8,850	2,102
2017/2016	2,702	16,740
Prior	32,176	7,422
Revolving Loans	0	0
Total	76,064	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	3,369	1,113
2017/2016	1,099	8,840
Prior	0	5,246
Revolving Loans	0	0
Total	4,468	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	114,554	93,339
2020/2019	63,681	43,419
2019/2018	36,888	33,931
2018/2017	25,521	24,570
2017/2016	15,989	27,029
Prior	64,207	54,988
Revolving Loans	9,820	10,652
Total	330,660	287,928
Commercial [Member] | Commercial Real Estate Residential [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	107,880	85,403
2020/2019	59,176	39,238
2019/2018	34,280	29,179
2018/2017	21,489	17,390
2017/2016	14,686	21,272
Prior	53,399	46,419
Revolving Loans	9,628	10,470
Total	300,538	249,371
Commercial [Member] | Commercial Real Estate Residential [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	2,367	1,714
2020/2019	2,385	2,214
2019/2018	1,976	2,438
2018/2017	2,169	2,962
2017/2016	681	4,520
Prior	7,683	5,306
Revolving Loans	167	182
Total	17,428	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	0	1,361
2019/2018	0	323
2018/2017	0	142
2017/2016	138	129
Prior	0	0
Revolving Loans	0	0
Total	138	3,876
Commercial [Member] | Commercial Real Estate Residential [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	4,307	4,301
2020/2019	2,120	606
2019/2018	632	1,991
2018/2017	1,863	4,076
2017/2016	484	1,108
Prior	3,125	3,263
Revolving Loans	25	0
Total	12,556	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	153,445	137,592
2020/2019	112,158	107,418
2019/2018	100,512	86,299
2018/2017	63,423	89,244
2017/2016	79,177	105,118
Prior	202,721	191,112
Revolving Loans	21,006	26,455
Total	732,442	743,238
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	143,376	125,205
2020/2019	102,955	97,204
2019/2018	93,085	77,685
2018/2017	58,540	80,416
2017/2016	73,293	100,740
Prior	179,541	165,839
Revolving Loans	19,996	25,524
Total	670,786	672,613
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	3,743	5,133
2020/2019	2,943	3,175
2019/2018	3,584	5,075
2018/2017	3,910	6,366
2017/2016	3,654	3,020
Prior	12,305	11,046
Revolving Loans	788	601
Total	30,927	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	0	0
2017/2016	0	0
Prior	272	3,382
Revolving Loans	20	115
Total	292	4,452
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	6,326	7,254
2020/2019	6,260	6,152
2019/2018	3,843	3,471
2018/2017	973	2,462
2017/2016	2,230	1,358
Prior	10,572	10,817
Revolving Loans	202	215
Total	30,406	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	31	28
Revolving Loans	0	0
Total	31	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	61,423	69,087
Total	61,423	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	61,068	68,610
Total	61,068	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	355	477
Total	355	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	67,200	80,063
2020/2019	53,464	27,319
2019/2018	20,929	40,329
2018/2017	31,990	15,171
2017/2016	10,779	7,516
Prior	16,705	23,739
Revolving Loans	85,142	85,771
Total	286,209	279,908
Commercial [Member] | Commercial Other [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	57,905	75,014
2020/2019	49,472	26,385
2019/2018	18,560	33,825
2018/2017	30,565	13,975
2017/2016	10,019	6,225
Prior	14,906	22,733
Revolving Loans	72,931	78,547
Total	254,358	256,704
Commercial [Member] | Commercial Other [Member] | Watch [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	7,189	2,888
2020/2019	2,285	378
2019/2018	1,609	1,130
2018/2017	872	555
2017/2016	409	464
Prior	1,181	595
Revolving Loans	11,402	7,030
Total	24,947	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	551	5,056
2018/2017	389	181
2017/2016	16	367
Prior	0	0
Revolving Loans	482	124
Total	1,438	5,753
Commercial [Member] | Commercial Other [Member] | Substandard [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	2,106	2,136
2020/2019	1,707	556
2019/2018	209	318
2018/2017	164	460
2017/2016	335	460
Prior	618	411
Revolving Loans	327	70
Total	5,466	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	84,205	252,667
2020/2019	14,911	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	99,116	252,667
Commercial [Member] | Commercial Unsecured SBA PPP [Member] | Pass [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	84,205	252,667
2020/2019	14,911	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	99,116	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	143,400	214,629
2020/2019	178,922	119,737
2019/2018	83,373	57,115
2018/2017	41,371	61,229
2017/2016	46,577	48,628
Prior	281,634	295,878
Revolving Loans	92,735	91,113
Total	868,012	888,329
Residential [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	143,400	214,629
2020/2019	178,922	119,301
2019/2018	83,055	56,812
2018/2017	41,138	60,915
2017/2016	46,078	48,276
Prior	273,637	287,932
Revolving Loans	92,326	90,724
Total	858,556	878,589
Residential [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	0
2020/2019	0	436
2019/2018	318	303
2018/2017	233	314
2017/2016	499	352
Prior	7,997	7,946
Revolving Loans	409	389
Total	9,456	9,740
Residential [Member] | Real Estate Mortgage [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	143,400	214,629
2020/2019	178,922	119,737
2019/2018	83,373	57,115
2018/2017	41,371	61,229
2017/2016	46,577	48,605
Prior	269,362	283,244
Revolving Loans	0	0
Total	763,005	784,559
Residential [Member] | Real Estate Mortgage [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	143,400	214,629
2020/2019	178,922	119,301
2019/2018	83,055	56,812
2018/2017	41,138	60,915
2017/2016	46,078	48,253
Prior	261,915	275,883
Revolving Loans	0	0
Total	754,508	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	318	303
2018/2017	233	314
2017/2016	499	352
Prior	7,447	7,361
Revolving Loans	0	0
Total	8,497	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	12,272	12,634
Revolving Loans	92,735	91,113
Total	105,007	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	11,722	12,049
Revolving Loans	92,326	90,724
Total	104,048	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	550	585
Revolving Loans	409	389
Total	959	974
Consumer [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	256,210	374,205
2020/2019	261,929	168,288
2019/2018	113,389	119,061
2018/2017	76,398	59,881
2017/2016	34,013	30,388
Prior	25,477	20,532
Revolving Loans	0	0
Total	767,416	772,355
Consumer [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	256,200	374,171
2020/2019	261,763	168,116
2019/2018	113,322	118,943
2018/2017	76,370	59,822
2017/2016	33,989	30,358
Prior	25,452	20,521
Revolving Loans	0	0
Total	767,096	771,931
Consumer [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	10	34
2020/2019	166	172
2019/2018	67	118
2018/2017	28	59
2017/2016	24	30
Prior	25	11
Revolving Loans	0	0
Total	320	424
Consumer [Member] | Consumer Direct [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	56,175	72,684
2020/2019	47,105	33,050
2019/2018	21,186	18,461
2018/2017	12,154	9,164
2017/2016	5,183	6,581
Prior	13,219	12,364
Revolving Loans	0	0
Total	155,022	152,304
Consumer [Member] | Consumer Direct [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	56,175	72,677
2020/2019	46,993	32,993
2019/2018	21,184	18,461
2018/2017	12,154	9,157
2017/2016	5,183	6,581
Prior	13,219	12,364
Revolving Loans	0	0
Total	154,908	152,233
Consumer [Member] | Consumer Direct [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	0	7
2020/2019	112	57
2019/2018	2	0
2018/2017	0	7
2017/2016	0	0
Prior	0	0
Revolving Loans	0	0
Total	114	71
Consumer [Member] | Consumer Indirect [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	200,035	301,521
2020/2019	214,824	135,238
2019/2018	92,203	100,600
2018/2017	64,244	50,717
2017/2016	28,830	23,807
Prior	12,258	8,168
Revolving Loans	0	0
Total	612,394	620,051
Consumer [Member] | Consumer Indirect [Member] | Performing [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	200,025	301,494
2020/2019	214,770	135,123
2019/2018	92,138	100,482
2018/2017	64,216	50,665
2017/2016	28,806	23,777
Prior	12,233	8,157
Revolving Loans	0	0
Total	612,188	619,698
Consumer [Member] | Consumer Indirect [Member] | Nonperforming [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021/2020	10	27
2020/2019	54	115
2019/2018	65	118
2018/2017	28	52
2017/2016	24	30
Prior	25	11
Revolving Loans	0	0
Total	$ 206	$ 353