Allowance for Credit Losses and Credit Quality of Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Minimum number of days past due for loans to be considered nonperforming	90 days
Credit Quality by Loan Class [Abstract]
2021/2020	$ 2,045,326	$ 1,927,429
2020/2019	1,179,768	1,312,819
2019/2018	993,265	949,810
2018/2017	680,836	750,728
2017/2016	528,706	515,688
Prior	1,294,841	1,262,066
Revolving Loans Amortized Cost Basis	703,846	749,657
Revolving Loans Converted to Term	71,871	30,688
Total	7,498,459	7,498,885
C&I [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	337,315	352,323
2020/2019	226,060	195,227
2019/2018	126,268	106,502
2018/2017	66,928	50,153
2017/2016	25,460	35,040
Prior	36,529	39,712
Revolving Loans Amortized Cost Basis	295,823	346,233
Revolving Loans Converted to Term	16,287	426
Total	1,130,670	1,125,616
C&I [Member] | Pass [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	335,685	331,921
2020/2019	219,931	182,329
2019/2018	114,617	91,230
2018/2017	64,310	41,856
2017/2016	20,137	32,625
Prior	32,146	32,609
Revolving Loans Amortized Cost Basis	280,476	322,674
Revolving Loans Converted to Term	15,731	412
Total	1,083,033	1,035,656
C&I [Member] | Special Mention [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	148	20,064
2020/2019	5,255	6,534
2019/2018	4,641	5,053
2018/2017	2,430	4,702
2017/2016	2,699	1,624
Prior	1,111	2,830
Revolving Loans Amortized Cost Basis	11,835	13,614
Revolving Loans Converted to Term	522	0
Total	28,641	54,421
C&I [Member] | Substandard [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	1,482	338
2020/2019	874	6,364
2019/2018	7,010	10,219
2018/2017	187	3,388
2017/2016	2,582	791
Prior	3,272	4,272
Revolving Loans Amortized Cost Basis	3,512	9,945
Revolving Loans Converted to Term	34	14
Total	18,953	35,331
C&I [Member] | Doubtful [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	1	207
2017/2016	42	0
Prior	0	1
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	43	208
CRE [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	490,089	472,506
2020/2019	435,769	412,425
2019/2018	386,151	296,712
2018/2017	252,752	342,604
2017/2016	278,885	255,045
Prior	534,088	496,867
Revolving Loans Amortized Cost Basis	142,891	115,926
Revolving Loans Converted to Term	44,362	20,200
Total	2,564,987	2,412,285
CRE [Member] | Pass [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	489,300	469,919
2020/2019	434,866	361,187
2019/2018	370,377	256,154
2018/2017	236,274	271,874
2017/2016	251,082	212,197
Prior	441,310	383,690
Revolving Loans Amortized Cost Basis	141,367	113,128
Revolving Loans Converted to Term	43,942	4,034
Total	2,408,518	2,072,183
CRE [Member] | Special Mention [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	789	2,051
2020/2019	826	44,034
2019/2018	11,235	22,260
2018/2017	3,544	55,039
2017/2016	15,379	36,830
Prior	53,372	43,537
Revolving Loans Amortized Cost Basis	780	1,297
Revolving Loans Converted to Term	420	11,524
Total	86,345	216,572
CRE [Member] | Substandard [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	0	536
2020/2019	77	5,307
2019/2018	4,539	18,298
2018/2017	12,934	15,691
2017/2016	12,424	6,018
Prior	34,563	62,168
Revolving Loans Amortized Cost Basis	744	1,501
Revolving Loans Converted to Term	0	4,642
Total	65,281	114,161
CRE [Member] | Doubtful [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	0	0
2020/2019	0	1,897
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	4,843	7,472
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	4,843	9,369
PPP [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	92,884	430,810
2020/2019	8,338	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	101,222	430,810
PPP [Member] | Pass [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	92,884	430,810
2020/2019	8,338	0
2019/2018	0	0
2018/2017	0	0
2017/2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	101,222	430,810
Auto [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	352,083	198,240
2020/2019	129,738	315,174
2019/2018	184,416	202,985
2018/2017	101,852	116,502
2017/2016	46,273	45,932
Prior	12,146	13,250
Revolving Loans Amortized Cost Basis	0	22
Revolving Loans Converted to Term	0	0
Total	826,508	892,105
Auto [Member] | Performing [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	351,778	197,881
2020/2019	129,419	314,034
2019/2018	183,959	201,850
2018/2017	101,441	115,977
2017/2016	46,007	45,495
Prior	12,064	13,250
Revolving Loans Amortized Cost Basis	0	22
Revolving Loans Converted to Term	0	0
Total	824,668	888,509
Auto [Member] | Nonperforming [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	305	359
2020/2019	319	1,140
2019/2018	457	1,135
2018/2017	411	525
2017/2016	266	437
Prior	82	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,840	3,596
Other Consumer [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	427,617	234,967
2020/2019	151,729	178,829
2019/2018	116,700	127,856
2018/2017	78,657	55,941
2017/2016	29,943	14,345
Prior	15,693	17,547
Revolving Loans Amortized Cost Basis	19,029	18,598
Revolving Loans Converted to Term	22	71
Total	839,390	648,154
Other Consumer [Member] | Performing [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	427,401	234,628
2020/2019	151,300	178,411
2019/2018	116,451	127,549
2018/2017	78,523	55,676
2017/2016	29,705	14,255
Prior	15,660	17,414
Revolving Loans Amortized Cost Basis	19,011	18,588
Revolving Loans Converted to Term	1	71
Total	838,052	646,592
Other Consumer [Member] | Nonperforming [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	216	339
2020/2019	429	418
2019/2018	249	307
2018/2017	134	265
2017/2016	238	90
Prior	33	133
Revolving Loans Amortized Cost Basis	18	10
Revolving Loans Converted to Term	21	0
Total	1,338	1,562
Residential [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	345,338	238,583
2020/2019	228,134	211,164
2019/2018	179,730	215,755
2018/2017	180,647	185,528
2017/2016	148,145	165,326
Prior	696,385	694,690
Revolving Loans Amortized Cost Basis	246,103	268,878
Revolving Loans Converted to Term	11,200	9,991
Total	2,035,682	1,989,915
Residential [Member] | Performing [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	345,338	237,338
2020/2019	226,723	210,505
2019/2018	179,087	213,437
2018/2017	179,575	182,993
2017/2016	146,611	164,424
Prior	687,863	684,495
Revolving Loans Amortized Cost Basis	246,103	268,878
Revolving Loans Converted to Term	11,161	9,991
Total	2,022,461	1,972,061
Residential [Member] | Nonperforming [Member]
Credit Quality by Loan Class [Abstract]
2021/2020	0	1,245
2020/2019	1,411	659
2019/2018	643	2,318
2018/2017	1,072	2,535
2017/2016	1,534	902
Prior	8,522	10,195
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	39	0
Total	$ 13,221	$ 17,854