Allowance for Credit Losses - Credit Quality Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Financing Receivable, before Allowance for Credit Loss, Total	$ 14,332,335		$ 14,332,335		$ 14,092,012
Current period gross charge-offs:
Total, Current period gross charge-offs	4,449	$ 5,065	15,929	$ 14,945
Loss
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Financing Receivable, before Allowance for Credit Loss, Total	0		0
Residential Lending: Residential Mortgage
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					687,599
2022/2021					1,227,369
2021/2020					677,025
2020/2019					309,308
2019/2018					217,050
Prior					1,174,681
Revolving Loans Amortized Cost Basis					9,202
Revolving Loans Converted to Term Loans Amortized Cost Basis					554
Financing Receivable, before Allowance for Credit Loss, Total					4,302,788
Residential Lending: Residential Mortgage | 740 and greater
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					557,636
2022/2021					1,064,444
2021/2020					560,463
2020/2019					245,241
2019/2018					165,258
Prior					920,100
Financing Receivable, before Allowance for Credit Loss, Total					3,513,142
Residential Lending: Residential Mortgage | 680 - 739
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					73,929
2022/2021					112,672
2021/2020					82,416
2020/2019					40,355
2019/2018					22,126
Prior					130,508
Financing Receivable, before Allowance for Credit Loss, Total					462,006
Residential Lending: Residential Mortgage | 620 - 679
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					12,320
2022/2021					13,804
2021/2020					9,881
2020/2019					3,649
2019/2018					3,054
Prior					35,441
Financing Receivable, before Allowance for Credit Loss, Total					78,149
Residential Lending: Residential Mortgage | 550 - 619
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					2,455
2022/2021					2,246
2021/2020					1,791
2020/2019					263
2019/2018					601
Prior					6,955
Financing Receivable, before Allowance for Credit Loss, Total					14,311
Residential Lending: Residential Mortgage | Less than 550
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022/2021					1,321
2021/2020					367
2019/2018					966
Prior					5,304
Financing Receivable, before Allowance for Credit Loss, Total					7,958
Residential Lending: Residential Mortgage | No Score
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					22,289
2022/2021					14,671
2021/2020					6,820
2020/2019					10,599
2019/2018					15,921
Prior					47,245
Financing Receivable, before Allowance for Credit Loss, Total					117,545
Residential Lending: Residential Mortgage | Fico Other
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					18,970
2022/2021					18,211
2021/2020					15,287
2020/2019					9,201
2019/2018					9,124
Prior					29,128
Revolving Loans Amortized Cost Basis					9,202
Revolving Loans Converted to Term Loans Amortized Cost Basis					554
Financing Receivable, before Allowance for Credit Loss, Total					109,677
Home equity line
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					1,046,968
Revolving Loans Converted to Term Loans Amortized Cost Basis					8,383
Financing Receivable, before Allowance for Credit Loss, Total					1,055,351
Home equity line | 740 and greater
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					817,123
Revolving Loans Converted to Term Loans Amortized Cost Basis					2,059
Financing Receivable, before Allowance for Credit Loss, Total					819,182
Home equity line | 680 - 739
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					171,117
Revolving Loans Converted to Term Loans Amortized Cost Basis					2,714
Financing Receivable, before Allowance for Credit Loss, Total					173,831
Home equity line | 620 - 679
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					45,368
Revolving Loans Converted to Term Loans Amortized Cost Basis					2,100
Financing Receivable, before Allowance for Credit Loss, Total					47,468
Home equity line | 550 - 619
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					7,485
Revolving Loans Converted to Term Loans Amortized Cost Basis					1,029
Financing Receivable, before Allowance for Credit Loss, Total					8,514
Home equity line | Less than 550
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					1,151
Revolving Loans Converted to Term Loans Amortized Cost Basis					481
Financing Receivable, before Allowance for Credit Loss, Total					1,632
Home equity line | No Score
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis					4,724
Financing Receivable, before Allowance for Credit Loss, Total					4,724
Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1,000,468		1,000,468		2,560,433
2022/2021	2,482,106		2,482,106		2,880,346
2021/2020	2,795,222		2,795,222		1,319,250
2020/2019	1,188,475		1,188,475		1,311,719
2019/2018	1,174,289		1,174,289		825,528
Prior	3,090,528		3,090,528		2,699,183
Revolving Loans Amortized Cost Basis	2,588,455		2,588,455		2,467,297
Revolving Loans Converted to Term Loans Amortized Cost Basis	12,792		12,792		28,256
Financing Receivable, before Allowance for Credit Loss, Total	14,332,335		14,332,335		14,092,012
Current period gross charge-offs:
2023, Current period gross charge-offs			282
2022, Current period gross charge-offs			1,779
2021, Current period gross charge-offs			1,797
2020, Current period gross charge-offs			908
2019, Current period gross charge-offs			1,608
Prior, Current period gross charge-offs			4,280
Revolving Loans Amortized Cost Basis, Current period gross charge-offs			4,795
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs			480
Total, Current period gross charge-offs			15,929
Residential mortgage
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Financing Receivable, before Allowance for Credit Loss, Total	4,303,924		4,303,924		4,302,788
Current period gross charge-offs:
Prior, Current period gross charge-offs			122
Revolving Loans Amortized Cost Basis, Current period gross charge-offs			254
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs			18
Total, Current period gross charge-offs			394
Residential mortgage | Fico Other
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	243,282		243,282
2022/2021	656,887		656,887
2021/2020	1,186,328		1,186,328
2020/2019	643,979		643,979
2019/2018	288,438		288,438
Prior	1,277,543		1,277,543
Revolving Loans Amortized Cost Basis	1,168,432		1,168,432
Revolving Loans Converted to Term Loans Amortized Cost Basis	6,423		6,423
Financing Receivable, before Allowance for Credit Loss, Total	5,471,312		5,471,312
Residential mortgage | Residential Lending: Residential Mortgage
Current period gross charge-offs:
Total, Current period gross charge-offs		1	122	1
Residential mortgage | Home equity line
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	1,160,965		1,160,965
Revolving Loans Converted to Term Loans Amortized Cost Basis	6,423		6,423
Financing Receivable, before Allowance for Credit Loss, Total	1,167,388		1,167,388
Current period gross charge-offs:
Revolving Loans Amortized Cost Basis, Current period gross charge-offs			254
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs			18
Total, Current period gross charge-offs			272
Residential mortgage | Home equity line | 740 and greater
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	961,974		961,974
Revolving Loans Converted to Term Loans Amortized Cost Basis	1,503		1,503
Financing Receivable, before Allowance for Credit Loss, Total	963,477		963,477
Residential mortgage | Home equity line | 680 - 739
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	148,629		148,629
Revolving Loans Converted to Term Loans Amortized Cost Basis	2,382		2,382
Financing Receivable, before Allowance for Credit Loss, Total	151,011		151,011
Residential mortgage | Home equity line | 620 - 679
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	34,333		34,333
Revolving Loans Converted to Term Loans Amortized Cost Basis	1,326		1,326
Financing Receivable, before Allowance for Credit Loss, Total	35,659		35,659
Residential mortgage | Home equity line | 550 - 619
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	9,099		9,099
Revolving Loans Converted to Term Loans Amortized Cost Basis	948		948
Financing Receivable, before Allowance for Credit Loss, Total	10,047		10,047
Residential mortgage | Home equity line | Less than 550
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	5,257		5,257
Revolving Loans Converted to Term Loans Amortized Cost Basis	264		264
Financing Receivable, before Allowance for Credit Loss, Total	5,521		5,521
Residential mortgage | Home equity line | No Score
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans Amortized Cost Basis	1,673		1,673
Financing Receivable, before Allowance for Credit Loss, Total	1,673		1,673
Home equity Line
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Financing Receivable, before Allowance for Credit Loss, Total	1,167,388		1,167,388		1,055,351
Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	173,794		173,794		335,116
2022/2021	269,549		269,549		218,940
2021/2020	160,207		160,207		112,885
2020/2019	77,039		77,039		105,789
2019/2018	62,932		62,932		57,786
Prior	34,899		34,899		28,131
Revolving Loans Amortized Cost Basis	372,928		372,928		361,126
Revolving Loans Converted to Term Loans Amortized Cost Basis	2,855		2,855		3,161
Financing Receivable, before Allowance for Credit Loss, Total	1,154,203		1,154,203		1,222,934
Current period gross charge-offs:
2023, Current period gross charge-offs			152
2022, Current period gross charge-offs			1,710
2021, Current period gross charge-offs			1,723
2020, Current period gross charge-offs			880
2019, Current period gross charge-offs			1,500
Prior, Current period gross charge-offs			1,995
Revolving Loans Amortized Cost Basis, Current period gross charge-offs			4,541
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs			462
Total, Current period gross charge-offs	3,665	3,986	12,963	11,754
Consumer | 740 and greater
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	85,839		85,839		200,887
2022/2021	139,753		139,753		111,047
2021/2020	84,741		84,741		53,534
2020/2019	39,390		39,390		43,912
2019/2018	27,790		27,790		24,951
Prior	13,589		13,589		8,432
Revolving Loans Amortized Cost Basis	116,342		116,342		125,126
Revolving Loans Converted to Term Loans Amortized Cost Basis	153		153		185
Financing Receivable, before Allowance for Credit Loss, Total	507,597		507,597		568,074
Consumer | 680 - 739
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	60,184		60,184		99,787
2022/2021	79,628		79,628		67,140
2021/2020	43,948		43,948		37,260
2020/2019	20,531		20,531		31,751
2019/2018	16,192		16,192		15,874
Prior	8,577		8,577		7,665
Revolving Loans Amortized Cost Basis	74,428		74,428		72,101
Revolving Loans Converted to Term Loans Amortized Cost Basis	416		416		514
Financing Receivable, before Allowance for Credit Loss, Total	303,904		303,904		332,092
Consumer | 620 - 679
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	21,797		21,797		25,949
2022/2021	32,632		32,632		29,587
2021/2020	18,094		18,094		14,226
2020/2019	8,650		8,650		16,872
2019/2018	9,214		9,214		9,672
Prior	6,191		6,191		6,488
Revolving Loans Amortized Cost Basis	33,543		33,543		31,854
Revolving Loans Converted to Term Loans Amortized Cost Basis	892		892		937
Financing Receivable, before Allowance for Credit Loss, Total	131,013		131,013		135,585
Consumer | 550 - 619
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	3,745		3,745		3,017
2022/2021	10,422		10,422		5,475
2021/2020	7,898		7,898		5,226
2020/2019	4,953		4,953		8,056
2019/2018	5,597		5,597		5,396
Prior	4,069		4,069		3,924
Revolving Loans Amortized Cost Basis	12,456		12,456		11,269
Revolving Loans Converted to Term Loans Amortized Cost Basis	684		684		854
Financing Receivable, before Allowance for Credit Loss, Total	49,824		49,824		43,217
Consumer | Less than 550
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	774		774		656
2022/2021	5,629		5,629		1,351
2021/2020	4,519		4,519		2,286
2020/2019	3,175		3,175		3,779
2019/2018	3,048		3,048		1,869
Prior	2,459		2,459		1,593
Revolving Loans Amortized Cost Basis	4,567		4,567		3,541
Revolving Loans Converted to Term Loans Amortized Cost Basis	560		560		443
Financing Receivable, before Allowance for Credit Loss, Total	24,731		24,731		15,518
Consumer | No Score
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1,455		1,455		3,205
2022/2021	297		297		258
2020/2019					51
2019/2018	5		5		24
Prior	13		13		29
Revolving Loans Amortized Cost Basis	41,852		41,852		38,805
Revolving Loans Converted to Term Loans Amortized Cost Basis	150		150		227
Financing Receivable, before Allowance for Credit Loss, Total	43,772		43,772		42,599
Consumer | Fico Other
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					1,615
2022/2021	1,188		1,188		4,082
2021/2020	1,007		1,007		353
2020/2019	340		340		1,368
2019/2018	1,086		1,086
Prior	1		1
Revolving Loans Amortized Cost Basis	89,740		89,740		78,430
Revolving Loans Converted to Term Loans Amortized Cost Basis					1
Financing Receivable, before Allowance for Credit Loss, Total	93,362		93,362		85,849
Residential Mortgage loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022					687,599
2022/2021					1,227,369
2021/2020					677,025
2020/2019					309,308
2019/2018					217,050
Prior					1,174,681
Revolving Loans Amortized Cost Basis					1,056,170
Revolving Loans Converted to Term Loans Amortized Cost Basis					8,937
Financing Receivable, before Allowance for Credit Loss, Total					5,358,139
Residential Mortgage loans | Residential Lending: Residential Mortgage
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	243,282		243,282
2022/2021	656,887		656,887
2021/2020	1,186,328		1,186,328
2020/2019	643,979		643,979
2019/2018	288,438		288,438
Prior	1,277,543		1,277,543
Revolving Loans Amortized Cost Basis	7,467		7,467
Financing Receivable, before Allowance for Credit Loss, Total	4,303,924		4,303,924
Current period gross charge-offs:
Prior, Current period gross charge-offs			122
Total, Current period gross charge-offs			122
Residential Mortgage loans | Residential Lending: Residential Mortgage | 740 and greater
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	195,053		195,053
2022/2021	527,072		527,072
2021/2020	1,018,441		1,018,441
2020/2019	536,878		536,878
2019/2018	231,038		231,038
Prior	1,012,924		1,012,924
Financing Receivable, before Allowance for Credit Loss, Total	3,521,406		3,521,406
Residential Mortgage loans | Residential Lending: Residential Mortgage | 680 - 739
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	29,006		29,006
2022/2021	78,642		78,642
2021/2020	116,247		116,247
2020/2019	73,209		73,209
2019/2018	32,906		32,906
Prior	131,547		131,547
Financing Receivable, before Allowance for Credit Loss, Total	461,557		461,557
Residential Mortgage loans | Residential Lending: Residential Mortgage | 620 - 679
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	2,847		2,847
2022/2021	11,153		11,153
2021/2020	15,830		15,830
2020/2019	10,678		10,678
2019/2018	5,705		5,705
Prior	36,289		36,289
Financing Receivable, before Allowance for Credit Loss, Total	82,502		82,502
Residential Mortgage loans | Residential Lending: Residential Mortgage | 550 - 619
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	269		269
2022/2021	3,343		3,343
2021/2020	4,037		4,037
2020/2019	2,458		2,458
2019/2018	249		249
Prior	11,724		11,724
Financing Receivable, before Allowance for Credit Loss, Total	22,080		22,080
Residential Mortgage loans | Residential Lending: Residential Mortgage | Less than 550
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022/2021	196		196
2021/2020	2,362		2,362
2020/2019	1,573		1,573
2019/2018	50		50
Prior	5,373		5,373
Financing Receivable, before Allowance for Credit Loss, Total	9,554		9,554
Residential Mortgage loans | Residential Lending: Residential Mortgage | No Score
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	5,589		5,589
2022/2021	19,402		19,402
2021/2020	11,729		11,729
2020/2019	6,343		6,343
2019/2018	9,757		9,757
Prior	53,515		53,515
Financing Receivable, before Allowance for Credit Loss, Total	106,335		106,335
Residential Mortgage loans | Residential Lending: Residential Mortgage | Fico Other
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	10,518		10,518
2022/2021	17,079		17,079
2021/2020	17,682		17,682
2020/2019	12,840		12,840
2019/2018	8,733		8,733
Prior	26,171		26,171
Revolving Loans Amortized Cost Basis	7,467		7,467
Financing Receivable, before Allowance for Credit Loss, Total	100,490		100,490
Commercial and Industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	68,718		68,718		380,244
2022/2021	338,941		338,941		430,817
2021/2020	374,375		374,375		61,473
2020/2019	40,036		40,036		177,922
2019/2018	155,385		155,385		54,209
Prior	151,313		151,313		140,740
Revolving Loans Amortized Cost Basis	969,160		969,160		974,334
Revolving Loans Converted to Term Loans Amortized Cost Basis	3,514		3,514		16,158
Financing Receivable, before Allowance for Credit Loss, Total	2,101,442		2,101,442		2,235,897
Current period gross charge-offs:
2023, Current period gross charge-offs			130
2022, Current period gross charge-offs			69
2021, Current period gross charge-offs			74
2020, Current period gross charge-offs			28
2019, Current period gross charge-offs			108
Prior, Current period gross charge-offs			2,163
Total, Current period gross charge-offs	784	328	2,572	1,277
Commercial and Industrial | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	55,062		55,062		359,881
2022/2021	294,558		294,558		422,567
2021/2020	368,460		368,460		54,656
2020/2019	35,603		35,603		170,222
2019/2018	150,195		150,195		51,476
Prior	147,197		147,197		137,257
Revolving Loans Amortized Cost Basis	906,094		906,094		894,384
Revolving Loans Converted to Term Loans Amortized Cost Basis	3,427		3,427		15,715
Financing Receivable, before Allowance for Credit Loss, Total	1,960,596		1,960,596		2,106,158
Commercial and Industrial | Special mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1		1		2,059
2022/2021	31,427		31,427		240
2021/2020	95		95		1,371
2020/2019	730		730		2,643
2019/2018	1,125		1,125		184
Prior	1,569		1,569		1,431
Revolving Loans Amortized Cost Basis	2,677		2,677		22,897
Revolving Loans Converted to Term Loans Amortized Cost Basis	87		87		378
Financing Receivable, before Allowance for Credit Loss, Total	37,711		37,711		31,203
Commercial and Industrial | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	217		217		625
2022/2021	532		532		289
2021/2020	245		245		1,117
2020/2019	847		847		1,092
2019/2018	1,839		1,839		668
Prior	1,034		1,034		885
Revolving Loans Amortized Cost Basis	13,947		13,947		14,733
Revolving Loans Converted to Term Loans Amortized Cost Basis					65
Financing Receivable, before Allowance for Credit Loss, Total	18,661		18,661		19,474
Commercial and Industrial | Other Indicator
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	13,438		13,438		17,679
2022/2021	12,424		12,424		7,721
2021/2020	5,575		5,575		4,329
2020/2019	2,856		2,856		3,965
2019/2018	2,226		2,226		1,881
Prior	1,513		1,513		1,167
Revolving Loans Amortized Cost Basis	46,442		46,442		42,320
Financing Receivable, before Allowance for Credit Loss, Total	84,474		84,474		79,062
Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	291,318		291,318		889,753
2022/2021	893,870		893,870		695,882
2021/2020	708,356		708,356		320,566
2020/2019	330,376		330,376		580,465
2019/2018	566,222		566,222		397,690
Prior	1,524,213		1,524,213		1,199,197
Revolving Loans Amortized Cost Basis	73,396		73,396		48,756
Financing Receivable, before Allowance for Credit Loss, Total	4,387,751		4,387,751		4,132,309
Current period gross charge-offs:
Total, Current period gross charge-offs		$ 750		$ 750
Commercial real estate | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	288,996		288,996		889,583
2022/2021	881,117		881,117		695,882
2021/2020	665,048		665,048		319,838
2020/2019	329,663		329,663		565,587
2019/2018	559,287		559,287		395,474
Prior	1,508,430		1,508,430		1,173,163
Revolving Loans Amortized Cost Basis	60,613		60,613		48,081
Financing Receivable, before Allowance for Credit Loss, Total	4,293,154		4,293,154		4,087,608
Commercial real estate | Special mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	2,322		2,322		170
2022/2021	7,643		7,643
2021/2020	41,304		41,304		555
2020/2019	543		543		14,878
2019/2018	6,935		6,935		512
Prior	13,039		13,039		11,398
Revolving Loans Amortized Cost Basis	12,483		12,483		675
Financing Receivable, before Allowance for Credit Loss, Total	84,269		84,269		28,188
Commercial real estate | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022/2021	5,110		5,110
2021/2020	2,004		2,004		173
2020/2019	170		170
2019/2018					1,704
Prior	2,599		2,599		14,485
Revolving Loans Amortized Cost Basis	300		300
Financing Receivable, before Allowance for Credit Loss, Total	10,183		10,183		16,362
Commercial real estate | Other Indicator
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Prior	145		145		151
Financing Receivable, before Allowance for Credit Loss, Total	145		145		151
Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	139,354		139,354		154,158
2022/2021	234,052		234,052		282,875
2021/2020	345,746		345,746		101,109
2020/2019	61,424		61,424		99,422
2019/2018	66,480		66,480		92,778
Prior	33,517		33,517		87,390
Revolving Loans Amortized Cost Basis	4,539		4,539		26,911
Financing Receivable, before Allowance for Credit Loss, Total	885,112		885,112		844,643
Construction | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	129,160		129,160		124,464
2022/2021	209,227		209,227		261,536
2021/2020	335,433		335,433		96,423
2020/2019	59,164		59,164		97,000
2019/2018	64,168		64,168		88,973
Prior	28,916		28,916		84,704
Revolving Loans Amortized Cost Basis	3,826		3,826		25,957
Financing Receivable, before Allowance for Credit Loss, Total	829,894		829,894		779,057
Construction | Special mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2020/2019					221
2019/2018	197		197
Prior	669		669
Financing Receivable, before Allowance for Credit Loss, Total	866		866		221
Construction | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2019/2018					21
Prior					490
Financing Receivable, before Allowance for Credit Loss, Total					511
Construction | Other Indicator
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	10,194		10,194		29,694
2022/2021	24,825		24,825		21,339
2021/2020	10,313		10,313		4,686
2020/2019	2,260		2,260		2,201
2019/2018	2,115		2,115		3,784
Prior	3,932		3,932		2,196
Revolving Loans Amortized Cost Basis	713		713		954
Financing Receivable, before Allowance for Credit Loss, Total	54,352		54,352		64,854
Lease financing
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	84,002		84,002		113,563
2022/2021	88,807		88,807		24,463
2021/2020	20,210		20,210		46,192
2020/2019	35,621		35,621		38,813
2019/2018	34,832		34,832		6,015
Prior	69,043		69,043		69,044
Financing Receivable, before Allowance for Credit Loss, Total	332,515		332,515		298,090
Lease financing | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	83,255		83,255		113,563
2022/2021	88,367		88,367		24,052
2021/2020	19,869		19,869		43,497
2020/2019	35,583		35,583		37,502
2019/2018	34,828		34,828		6,004
Prior	69,043		69,043		67,687
Financing Receivable, before Allowance for Credit Loss, Total	330,945		330,945		292,305
Lease financing | Special mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022/2021					411
2021/2020	341		341		2,498
2020/2019	38		38		1,299
Financing Receivable, before Allowance for Credit Loss, Total	379		379		4,208
Lease financing | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	747		747
2022/2021	440		440
2021/2020					197
2020/2019					12
2019/2018	4		4		11
Prior					1,357
Financing Receivable, before Allowance for Credit Loss, Total	1,191		1,191		1,577
Commercial Lending
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	583,392		583,392		1,537,718
2022/2021	1,555,670		1,555,670		1,434,037
2021/2020	1,448,687		1,448,687		529,340
2020/2019	467,457		467,457		896,622
2019/2018	822,919		822,919		550,692
Prior	1,778,086		1,778,086		1,496,371
Revolving Loans Amortized Cost Basis	1,047,095		1,047,095		1,050,001
Revolving Loans Converted to Term Loans Amortized Cost Basis	3,514		3,514		16,158
Financing Receivable, before Allowance for Credit Loss, Total	$ 7,706,820		7,706,820		$ 7,510,939
Current period gross charge-offs:
2023, Current period gross charge-offs			130
2022, Current period gross charge-offs			69
2021, Current period gross charge-offs			74
2020, Current period gross charge-offs			28
2019, Current period gross charge-offs			108
Prior, Current period gross charge-offs			2,163
Total, Current period gross charge-offs			$ 2,572