Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 11,981	$ 13,183
Financing Receivable, Revolving	2,925,192	2,981,010
Financing Receivable, Originated in Current Fiscal Year	1,737,417	6,227,743
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,127,047	4,280,254
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,054,604	7,136,344
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,844,765	4,086,483
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,780,353	1,945,455
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,824,748	3,111,296
Financing Receivable, before Allowance for Credit Loss, Total	30,294,127	29,768,586
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	3,439	11,082
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	7,183
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	1,747	14,697
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	2,938	14,300
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	4,834	28,283
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	692	209
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	65	662
Financing Receivable, Allowance for Credit Loss, Writeoff	13,714	76,415
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11,580	9,320
Financing Receivable, Revolving	2,824,624	2,887,188
Financing Receivable, Originated in Current Fiscal Year	1,664,393	5,928,329
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,875,870	4,178,435
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,903,412	6,680,015
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,353,752	3,859,616
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,613,695	1,922,456
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,733,025	3,041,886
Financing Receivable, before Allowance for Credit Loss, Total	28,968,772	28,497,925
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	91	127
Financing Receivable, Revolving	47,576	50,036
Financing Receivable, Originated in Current Fiscal Year	258	92,851
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	76,252	12,396
Financing Receivable, Originated Two Years before Latest Fiscal Year	75,624	191,587
Financing Receivable, Originated Three Years before Latest Fiscal Year	214,738	28,101
Financing Receivable, Originated Four Years before Latest Fiscal Year	20,304	7,385
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	16,107	13,701
Financing Receivable, before Allowance for Credit Loss, Total	450,858	396,057
Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	244	2,015
Financing Receivable, Revolving	50,227	43,602
Financing Receivable, Originated in Current Fiscal Year	68,229	190,993
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	140,056	79,035
Financing Receivable, Originated Two Years before Latest Fiscal Year	65,735	235,110
Financing Receivable, Originated Three Years before Latest Fiscal Year	253,684	182,313
Financing Receivable, Originated Four Years before Latest Fiscal Year	136,581	7,103
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	25,179	13,189
Financing Receivable, before Allowance for Credit Loss, Total	739,690	751,344
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	64	1,721
Financing Receivable, Revolving	2,766	185
Financing Receivable, Originated in Current Fiscal Year	4,537	15,570
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	34,869	10,389
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,833	29,632
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,592	16,453
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,773	8,512
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	50,437	42,519
Financing Receivable, before Allowance for Credit Loss, Total	134,808	123,260
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,529	2,306
Financing Receivable, Revolving	2,123,229	2,166,104
Financing Receivable, Originated in Current Fiscal Year	1,365,165	4,794,949
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,782,607	2,902,201
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,746,237	4,860,631
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,639,971	2,376,387
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,122,298	738,576
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,671,122	1,089,243
Financing Receivable, before Allowance for Credit Loss, Total	19,450,628	18,928,090
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,183	4,433
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	6,745
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	1,364	11,485
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	1,963	8,510
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	3,696	27,528
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	379	3
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	3
Financing Receivable, Allowance for Credit Loss, Writeoff	8,585	58,707
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,284	248
Financing Receivable, Revolving	2,026,363	2,076,092
Financing Receivable, Originated in Current Fiscal Year	1,293,359	4,499,360
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,535,051	2,805,832
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,601,282	4,422,105
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,167,907	2,160,547
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,965,871	724,088
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,630,508	1,062,831
Financing Receivable, before Allowance for Credit Loss, Total	18,220,340	17,750,855
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	46,602	48,829
Financing Receivable, Originated in Current Fiscal Year	258	92,469
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	75,930	11,692
Financing Receivable, Originated Two Years before Latest Fiscal Year	74,960	190,504
Financing Receivable, Originated Three Years before Latest Fiscal Year	213,863	27,916
Financing Receivable, Originated Four Years before Latest Fiscal Year	20,156	7,385
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	15,334	13,217
Financing Receivable, before Allowance for Credit Loss, Total	447,102	392,012
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	244	2,015
Financing Receivable, Revolving	47,843	41,183
Financing Receivable, Originated in Current Fiscal Year	68,229	190,399
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	140,056	78,708
Financing Receivable, Originated Two Years before Latest Fiscal Year	65,735	235,033
Financing Receivable, Originated Three Years before Latest Fiscal Year	253,684	182,313
Financing Receivable, Originated Four Years before Latest Fiscal Year	136,271	7,103
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	25,155	13,165
Financing Receivable, before Allowance for Credit Loss, Total	736,973	747,903
Commercial Portfolio Segment [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	42
Financing Receivable, Revolving	2,421	0
Financing Receivable, Originated in Current Fiscal Year	3,319	12,721
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	31,570	5,969
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,260	12,988
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,518	5,612
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	125	30
Financing Receivable, before Allowance for Credit Loss, Total	46,213	37,320
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	257	2,306
Financing Receivable, Revolving	1,906,552	1,930,860
Financing Receivable, Originated in Current Fiscal Year	746,305	2,752,002
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,756,810	1,533,233
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,437,110	2,365,866
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,278,488	1,214,154
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,104,596	267,148
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	695,906	510,480
Financing Receivable, before Allowance for Credit Loss, Total	10,925,769	10,573,741
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,183	4,433
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	128
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	471	11,484
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	1,963	8,510
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	3,696	22,959
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	379	3
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	7,692	47,517
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	13	248
Financing Receivable, Revolving	1,810,270	1,841,790
Financing Receivable, Originated in Current Fiscal Year	741,400	2,656,953
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,661,841	1,514,277
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,404,585	2,254,758
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,154,397	1,080,180
Financing Receivable, Originated Four Years before Latest Fiscal Year	972,686	263,286
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	691,512	510,301
Financing Receivable, before Allowance for Credit Loss, Total	10,436,691	10,121,545
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	46,602	48,829
Financing Receivable, Originated in Current Fiscal Year	258	4,037
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,926	4,810
Financing Receivable, Originated Two Years before Latest Fiscal Year	17,018	63,390
Financing Receivable, Originated Three Years before Latest Fiscal Year	10,387	6,984
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,166	515
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	648	48
Financing Receivable, before Allowance for Credit Loss, Total	83,005	128,613
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	244	2,015
Financing Receivable, Revolving	47,259	40,240
Financing Receivable, Originated in Current Fiscal Year	1,960	90,240
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	92,529	9,677
Financing Receivable, Originated Two Years before Latest Fiscal Year	12,749	34,730
Financing Receivable, Originated Three Years before Latest Fiscal Year	109,187	126,134
Financing Receivable, Originated Four Years before Latest Fiscal Year	125,745	3,347
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,747	131
Financing Receivable, before Allowance for Credit Loss, Total	393,175	304,500
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	42
Financing Receivable, Revolving	2,421	0
Financing Receivable, Originated in Current Fiscal Year	2,687	772
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	513	4,468
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,758	12,988
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,518	855
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	12,898	19,084
Commercial Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Portfolio [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	9,489	14,703
Financing Receivable, Originated in Current Fiscal Year	20,106	231,446
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	243,308	187,066
Financing Receivable, Originated Two Years before Latest Fiscal Year	182,772	181,625
Financing Receivable, Originated Three Years before Latest Fiscal Year	175,889	223,557
Financing Receivable, Originated Four Years before Latest Fiscal Year	197,588	117,435
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	289,213	187,911
Financing Receivable, before Allowance for Credit Loss, Total	1,118,363	1,143,741
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	3
Financing Receivable, Allowance for Credit Loss, Writeoff	0	3
Commercial Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Portfolio [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	8,905	13,760
Financing Receivable, Originated in Current Fiscal Year	19,558	228,913
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	233,212	175,059
Financing Receivable, Originated Two Years before Latest Fiscal Year	166,985	180,132
Financing Receivable, Originated Three Years before Latest Fiscal Year	174,165	214,237
Financing Receivable, Originated Four Years before Latest Fiscal Year	186,337	114,064
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	269,638	181,982
Financing Receivable, before Allowance for Credit Loss, Total	1,058,800	1,108,147
Commercial Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Portfolio [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,418	497
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,572	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	8,619
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,173	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,241	2,803
Financing Receivable, before Allowance for Credit Loss, Total	26,403	11,920
Commercial Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Portfolio [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	584	943
Financing Receivable, Originated in Current Fiscal Year	548	2,532
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,678	10,009
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,713	1,492
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,724	701
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,078	3,371
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,334	3,125
Financing Receivable, before Allowance for Credit Loss, Total	31,658	22,173
Commercial Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Portfolio [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	1,501
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,501	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	1,501	1,501
Commercial Portfolio Segment [Member] | Commercial And Business Lending [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	257	2,306
Financing Receivable, Revolving	1,916,041	1,945,563
Financing Receivable, Originated in Current Fiscal Year	766,411	2,983,447
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,000,118	1,720,298
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,619,882	2,547,491
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,454,377	1,437,710
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,302,184	384,583
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	985,119	698,390
Financing Receivable, before Allowance for Credit Loss, Total	12,044,132	11,717,483
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,183	4,433
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	128
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	471	11,484
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	1,963	8,510
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	3,696	22,959
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	379	3
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	3
Financing Receivable, Allowance for Credit Loss, Writeoff	7,692	47,520
Commercial Portfolio Segment [Member] | Commercial And Business Lending [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	13	248
Financing Receivable, Revolving	1,819,174	1,855,550
Financing Receivable, Originated in Current Fiscal Year	760,958	2,885,866
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,895,053	1,689,336
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,571,570	2,434,891
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,328,562	1,294,416
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,159,023	377,350
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	961,150	692,283
Financing Receivable, before Allowance for Credit Loss, Total	11,495,492	11,229,693
Commercial Portfolio Segment [Member] | Commercial And Business Lending [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	46,602	48,829
Financing Receivable, Originated in Current Fiscal Year	258	4,037
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,344	5,307
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,590	63,390
Financing Receivable, Originated Three Years before Latest Fiscal Year	10,387	15,604
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,339	515
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,889	2,852
Financing Receivable, before Allowance for Credit Loss, Total	109,408	140,532
Commercial Portfolio Segment [Member] | Commercial And Business Lending [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	244	2,015
Financing Receivable, Revolving	47,843	41,183
Financing Receivable, Originated in Current Fiscal Year	2,507	92,772
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	95,207	19,686
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,462	36,222
Financing Receivable, Originated Three Years before Latest Fiscal Year	110,911	126,835
Financing Receivable, Originated Four Years before Latest Fiscal Year	133,822	6,719
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,080	3,255
Financing Receivable, before Allowance for Credit Loss, Total	424,833	326,673
Commercial Portfolio Segment [Member] | Commercial And Business Lending [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	42
Financing Receivable, Revolving	2,421	0
Financing Receivable, Originated in Current Fiscal Year	2,687	772
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	513	5,969
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,260	12,988
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,518	855
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	14,399	20,585
Commercial Portfolio Segment [Member] | Commercial Real Estate Investor Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,272	0
Financing Receivable, Revolving	174,673	190,451
Financing Receivable, Originated in Current Fiscal Year	541,984	1,485,088
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,410,452	785,058
Financing Receivable, Originated Two Years before Latest Fiscal Year	733,743	1,303,690
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,272,071	751,786
Financing Receivable, Originated Four Years before Latest Fiscal Year	787,238	328,338
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	677,281	383,563
Financing Receivable, before Allowance for Credit Loss, Total	5,597,442	5,227,975
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	6,617
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	892	1
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	4,569
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	892	11,187
Commercial Portfolio Segment [Member] | Commercial Real Estate Investor Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,272	0
Financing Receivable, Revolving	174,673	190,451
Financing Receivable, Originated in Current Fiscal Year	502,372	1,334,740
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,302,707	725,652
Financing Receivable, Originated Two Years before Latest Fiscal Year	681,873	1,179,867
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,155,646	723,994
Financing Receivable, Originated Four Years before Latest Fiscal Year	773,972	321,084
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	660,761	363,288
Financing Receivable, before Allowance for Credit Loss, Total	5,252,003	4,839,076
Commercial Portfolio Segment [Member] | Commercial Real Estate Investor Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	69,014
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	66,586	6,385
Financing Receivable, Originated Two Years before Latest Fiscal Year	13,597	30,672
Financing Receivable, Originated Three Years before Latest Fiscal Year	53,058	12,312
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,818	6,870
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,445	10,366
Financing Receivable, before Allowance for Credit Loss, Total	148,504	135,618
Commercial Portfolio Segment [Member] | Commercial Real Estate Investor Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	38,980	69,385
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10,102	53,022
Financing Receivable, Originated Two Years before Latest Fiscal Year	38,273	93,151
Financing Receivable, Originated Three Years before Latest Fiscal Year	63,367	10,724
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,448	384
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,075	9,910
Financing Receivable, before Allowance for Credit Loss, Total	165,246	236,576
Commercial Portfolio Segment [Member] | Commercial Real Estate Investor Portfolio Segment [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	632	11,949
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	31,057	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	4,757
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	31,689	16,705
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	32,516	30,090
Financing Receivable, Originated in Current Fiscal Year	56,770	326,414
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	372,037	396,845
Financing Receivable, Originated Two Years before Latest Fiscal Year	392,611	1,009,450
Financing Receivable, Originated Three Years before Latest Fiscal Year	913,523	186,890
Financing Receivable, Originated Four Years before Latest Fiscal Year	32,876	25,654
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,722	7,289
Financing Receivable, before Allowance for Credit Loss, Total	1,809,054	1,982,632
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	32,516	30,090
Financing Receivable, Originated in Current Fiscal Year	30,028	278,754
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	337,291	390,845
Financing Receivable, Originated Two Years before Latest Fiscal Year	347,839	807,347
Financing Receivable, Originated Three Years before Latest Fiscal Year	683,699	142,137
Financing Receivable, Originated Four Years before Latest Fiscal Year	32,876	25,654
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,597	7,260
Financing Receivable, before Allowance for Credit Loss, Total	1,472,845	1,682,086
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	19,419
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	38,773	96,442
Financing Receivable, Originated Three Years before Latest Fiscal Year	150,418	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	189,190	115,862
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	26,742	28,241
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	34,746	6,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,000	105,660
Financing Receivable, Originated Three Years before Latest Fiscal Year	79,406	44,754
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	146,894	184,654
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	125	30
Financing Receivable, before Allowance for Credit Loss, Total	125	30
Commercial Portfolio Segment [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,272	0
Financing Receivable, Revolving	207,188	220,541
Financing Receivable, Originated in Current Fiscal Year	598,754	1,811,502
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,782,489	1,181,903
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,126,354	2,313,140
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,185,594	938,677
Financing Receivable, Originated Four Years before Latest Fiscal Year	820,114	353,992
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	686,003	390,853
Financing Receivable, before Allowance for Credit Loss, Total	7,406,496	7,210,607
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	6,617
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	892	1
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	4,569
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	892	11,187
Commercial Portfolio Segment [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,272	0
Financing Receivable, Revolving	207,188	220,541
Financing Receivable, Originated in Current Fiscal Year	532,401	1,613,494
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,639,997	1,116,496
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,029,712	1,987,215
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,839,345	866,130
Financing Receivable, Originated Four Years before Latest Fiscal Year	806,848	346,738
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	669,357	370,548
Financing Receivable, before Allowance for Credit Loss, Total	6,724,849	6,521,163
Commercial Portfolio Segment [Member] | Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	88,433
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	66,586	6,385
Financing Receivable, Originated Two Years before Latest Fiscal Year	52,370	127,114
Financing Receivable, Originated Three Years before Latest Fiscal Year	203,476	12,312
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,818	6,870
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,445	10,366
Financing Receivable, before Allowance for Credit Loss, Total	337,694	251,480
Commercial Portfolio Segment [Member] | Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	65,722	97,626
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	44,849	59,022
Financing Receivable, Originated Two Years before Latest Fiscal Year	44,273	198,811
Financing Receivable, Originated Three Years before Latest Fiscal Year	142,773	55,477
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,448	384
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,075	9,910
Financing Receivable, before Allowance for Credit Loss, Total	312,139	421,230
Commercial Portfolio Segment [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	632	11,949
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	31,057	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	4,757
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	125	30
Financing Receivable, before Allowance for Credit Loss, Total	31,814	16,735
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,452	10,878
Financing Receivable, Revolving	801,963	814,906
Financing Receivable, Originated in Current Fiscal Year	372,253	1,432,794
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,344,440	1,378,053
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,308,367	2,275,714
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,204,794	1,710,096
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,658,056	1,206,880
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,153,626	2,022,053
Financing Receivable, before Allowance for Credit Loss, Total	10,843,499	10,840,496
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,256	6,649
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	438
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	383	3,212
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	975	5,790
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	1,138	755
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	313	205
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	65	659
Financing Receivable, Allowance for Credit Loss, Writeoff	5,130	17,709
Consumer Loan [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,296	9,071
Financing Receivable, Revolving	798,261	811,096
Financing Receivable, Originated in Current Fiscal Year	371,034	1,428,969
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,340,820	1,372,603
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,302,130	2,257,910
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,185,845	1,699,069
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,647,824	1,198,368
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,102,517	1,979,055
Financing Receivable, before Allowance for Credit Loss, Total	10,748,431	10,747,070
Consumer Loan [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	91	127
Financing Receivable, Revolving	974	1,207
Financing Receivable, Originated in Current Fiscal Year	0	381
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	322	704
Financing Receivable, Originated Two Years before Latest Fiscal Year	664	1,083
Financing Receivable, Originated Three Years before Latest Fiscal Year	875	185
Financing Receivable, Originated Four Years before Latest Fiscal Year	148	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	773	484
Financing Receivable, before Allowance for Credit Loss, Total	3,755	4,045
Consumer Loan [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	2,383	2,418
Financing Receivable, Originated in Current Fiscal Year	0	594
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	327
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	77
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	311	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23	24
Financing Receivable, before Allowance for Credit Loss, Total	2,718	3,440
Consumer Loan [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	64	1,679
Financing Receivable, Revolving	345	185
Financing Receivable, Originated in Current Fiscal Year	1,218	2,849
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,299	4,420
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,573	16,644
Financing Receivable, Originated Three Years before Latest Fiscal Year	18,075	10,842
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,773	8,512
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	50,312	42,490
Financing Receivable, before Allowance for Credit Loss, Total	88,595	85,941
Consumer Loan [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	30,360	175,539
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	195,966	509,647
Financing Receivable, Originated Two Years before Latest Fiscal Year	524,514	1,590,679
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,594,308	1,653,482
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,608,438	1,204,049
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,046,067	1,914,144
Financing Receivable, before Allowance for Credit Loss, Total	6,999,654	7,047,541
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0	134
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	26	125
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	190	101
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0	153
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	24	515
Financing Receivable, Allowance for Credit Loss, Writeoff	239	1,029
Consumer Loan [Member] | Residential Mortgage [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	29,142	172,607
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	193,701	507,186
Financing Receivable, Originated Two Years before Latest Fiscal Year	521,630	1,579,182
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,580,850	1,643,341
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,599,160	1,195,752
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,002,070	1,878,251
Financing Receivable, before Allowance for Credit Loss, Total	6,926,554	6,976,319
Consumer Loan [Member] | Residential Mortgage [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	311	162
Financing Receivable, before Allowance for Credit Loss, Total	311	162
Consumer Loan [Member] | Residential Mortgage [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	594
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	327
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	77
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	311	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23	24
Financing Receivable, before Allowance for Credit Loss, Total	334	1,022
Consumer Loan [Member] | Residential Mortgage [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	1,218	2,338
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,265	2,134
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,884	11,420
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,458	10,141
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,968	8,297
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	43,663	35,708
Financing Receivable, before Allowance for Credit Loss, Total	72,455	70,038
Consumer Loan [Member] | Automobile Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	338,542	1,242,431
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,136,091	861,790
Financing Receivable, Originated Two Years before Latest Fiscal Year	777,604	656,212
Financing Receivable, Originated Three Years before Latest Fiscal Year	583,129	49,643
Financing Receivable, Originated Four Years before Latest Fiscal Year	43,303	67
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	96	77
Financing Receivable, before Allowance for Credit Loss, Total	2,878,765	2,810,220
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	418
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	383	2,982
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	910	5,582
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	941	560
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	95	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	2,330	9,541
Consumer Loan [Member] | Automobile Loan [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	338,542	1,241,609
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,134,816	858,924
Financing Receivable, Originated Two Years before Latest Fiscal Year	774,547	650,880
Financing Receivable, Originated Three Years before Latest Fiscal Year	578,739	48,999
Financing Receivable, Originated Four Years before Latest Fiscal Year	42,699	67
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67	77
Financing Receivable, before Allowance for Credit Loss, Total	2,869,409	2,800,555
Consumer Loan [Member] | Automobile Loan [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	332
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	303	704
Financing Receivable, Originated Two Years before Latest Fiscal Year	563	1,048
Financing Receivable, Originated Three Years before Latest Fiscal Year	723	178
Financing Receivable, Originated Four Years before Latest Fiscal Year	45	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	29	0
Financing Receivable, before Allowance for Credit Loss, Total	1,664	2,262
Consumer Loan [Member] | Automobile Loan [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	491
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	971	2,162
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,493	4,284
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,668	466
Financing Receivable, Originated Four Years before Latest Fiscal Year	559	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	7,692	7,402
Consumer Loan [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,858	10,568
Financing Receivable, Revolving	560,559	570,051
Financing Receivable, Originated in Current Fiscal Year	62	467
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,022	1,788
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,576	26,305
Financing Receivable, Originated Three Years before Latest Fiscal Year	25,425	5,520
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,568	2,180
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	58,929	57,941
Financing Receivable, before Allowance for Credit Loss, Total	654,140	664,252
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0	93
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	26	9
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	19
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	5	10
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	29	85
Financing Receivable, Allowance for Credit Loss, Writeoff	61	216
Consumer Loan [Member] | Home Equity Line of Credit [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,703	8,764
Financing Receivable, Revolving	560,336	569,866
Financing Receivable, Originated in Current Fiscal Year	62	411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	966	1,684
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,299	25,372
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,329	5,289
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,245	1,965
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,853	50,841
Financing Receivable, before Allowance for Credit Loss, Total	645,089	655,429
Consumer Loan [Member] | Home Equity Line of Credit [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	91	127
Financing Receivable, Revolving	0	81
Financing Receivable, Originated in Current Fiscal Year	0	41
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	100	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	147	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	100	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	430	323
Financing Receivable, before Allowance for Credit Loss, Total	777	445
Consumer Loan [Member] | Home Equity Line of Credit [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	64	1,677
Financing Receivable, Revolving	223	104
Financing Receivable, Originated in Current Fiscal Year	0	15
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	56	103
Financing Receivable, Originated Two Years before Latest Fiscal Year	176	933
Financing Receivable, Originated Three Years before Latest Fiscal Year	949	231
Financing Receivable, Originated Four Years before Latest Fiscal Year	224	215
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,647	6,778
Financing Receivable, before Allowance for Credit Loss, Total	8,275	8,378
Consumer Loan [Member] | Other Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	594	310
Financing Receivable, Revolving	241,405	244,855
Financing Receivable, Originated in Current Fiscal Year	3,288	14,356
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,362	4,829
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,673	2,518
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,932	1,451
Financing Receivable, Originated Four Years before Latest Fiscal Year	746	584
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,533	49,891
Financing Receivable, before Allowance for Credit Loss, Total	310,940	318,483
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,256	6,555
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	20
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0	96
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13	75
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	7	75
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	213	42
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	12	59
Financing Receivable, Allowance for Credit Loss, Writeoff	2,500	6,922
Consumer Loan [Member] | Other Consumer [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	593	308
Financing Receivable, Revolving	237,926	241,230
Financing Receivable, Originated in Current Fiscal Year	3,288	14,343
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,337	4,808
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,654	2,475
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,927	1,440
Financing Receivable, Originated Four Years before Latest Fiscal Year	721	584
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,528	49,886
Financing Receivable, before Allowance for Credit Loss, Total	307,380	314,767
Consumer Loan [Member] | Other Consumer [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1	0
Financing Receivable, Revolving	974	1,125
Financing Receivable, Originated in Current Fiscal Year	0	8
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	19	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	36
Financing Receivable, Originated Three Years before Latest Fiscal Year	5	7
Financing Receivable, Originated Four Years before Latest Fiscal Year	4	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3	0
Financing Receivable, before Allowance for Credit Loss, Total	1,004	1,176
Consumer Loan [Member] | Other Consumer [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	2,383	2,418
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	2,383	2,418
Consumer Loan [Member] | Other Consumer [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	2
Financing Receivable, Revolving	122	81
Financing Receivable, Originated in Current Fiscal Year	0	5
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7	21
Financing Receivable, Originated Two Years before Latest Fiscal Year	20	7
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	4
Financing Receivable, Originated Four Years before Latest Fiscal Year	22	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2	4
Financing Receivable, before Allowance for Credit Loss, Total	$ 173	$ 122