Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 11,102	$ 29,616
Financing Receivable, Revolving	3,273,349	3,116,131
Financing Receivable, Originated in Current Fiscal Year	1,759,772	8,166,390
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,074,585	5,036,328
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,847,843	3,176,275
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,943,550	4,755,999
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,343,454	2,807,454
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,555,611	4,105,037
Financing Receivable, before Allowance for Credit Loss, Total	31,798,164	31,163,614
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	3,901	13,618
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	1,281
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	567	10,882
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	706	6,954
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	1,475	20,237
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	1,391	1,115
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	170	866
Financing Receivable, Allowance for Credit Loss, Writeoff	8,210	54,953
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,777	19,486
Financing Receivable, Revolving	3,213,042	3,022,323
Financing Receivable, Originated in Current Fiscal Year	1,706,241	7,884,671
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,801,380	4,863,126
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,695,537	3,038,220
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,788,046	4,191,311
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,828,486	2,645,685
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,316,486	4,040,407
Financing Receivable, before Allowance for Credit Loss, Total	30,349,218	29,685,743
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	205	327
Financing Receivable, Revolving	4,423	12,330
Financing Receivable, Originated in Current Fiscal Year	48	64,024
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	43,432	23,510
Financing Receivable, Originated Two Years before Latest Fiscal Year	23,745	35,024
Financing Receivable, Originated Three Years before Latest Fiscal Year	23,486	116,368
Financing Receivable, Originated Four Years before Latest Fiscal Year	109,670	51,985
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67,758	6,930
Financing Receivable, before Allowance for Credit Loss, Total	272,562	310,171
Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	470	7,290
Financing Receivable, Revolving	55,555	81,270
Financing Receivable, Originated in Current Fiscal Year	53,290	214,481
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	226,492	137,311
Financing Receivable, Originated Two Years before Latest Fiscal Year	117,748	94,774
Financing Receivable, Originated Three Years before Latest Fiscal Year	119,111	423,143
Financing Receivable, Originated Four Years before Latest Fiscal Year	381,957	100,093
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	111,650	16,200
Financing Receivable, before Allowance for Credit Loss, Total	1,065,803	1,067,272
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,650	2,513
Financing Receivable, Revolving	329	208
Financing Receivable, Originated in Current Fiscal Year	193	3,214
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,281	12,381
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,813	8,257
Financing Receivable, Originated Three Years before Latest Fiscal Year	12,907	25,177
Financing Receivable, Originated Four Years before Latest Fiscal Year	23,341	9,691
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	59,717	41,500
Financing Receivable, before Allowance for Credit Loss, Total	110,581	100,428
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,897	12,461
Financing Receivable, Revolving	2,408,139	2,233,015
Financing Receivable, Originated in Current Fiscal Year	1,352,655	6,608,437
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,611,210	3,942,739
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,828,251	2,130,374
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,986,824	2,839,853
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,508,547	1,266,791
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,221,812	1,205,544
Financing Receivable, before Allowance for Credit Loss, Total	20,917,438	20,226,753
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,730	5,424
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	831
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	61	8,983
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	135	3,852
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	690	16,465
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	390	379
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	3,006	35,934
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15	3,698
Financing Receivable, Revolving	2,351,010	2,142,980
Financing Receivable, Originated in Current Fiscal Year	1,299,124	6,330,026
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,341,815	3,775,243
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,682,757	2,001,877
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,846,164	2,293,440
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,009,526	1,115,063
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,033,373	1,182,658
Financing Receivable, before Allowance for Credit Loss, Total	19,563,769	18,841,287
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	3,579	11,139
Financing Receivable, Originated in Current Fiscal Year	48	63,702
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	42,903	23,066
Financing Receivable, Originated Two Years before Latest Fiscal Year	23,018	34,015
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,747	115,634
Financing Receivable, Originated Four Years before Latest Fiscal Year	109,113	51,935
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67,385	6,542
Financing Receivable, before Allowance for Credit Loss, Total	268,793	306,033
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	470	7,290
Financing Receivable, Revolving	53,550	78,896
Financing Receivable, Originated in Current Fiscal Year	53,290	214,481
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	226,492	136,731
Financing Receivable, Originated Two Years before Latest Fiscal Year	117,172	94,482
Financing Receivable, Originated Three Years before Latest Fiscal Year	113,445	423,014
Financing Receivable, Originated Four Years before Latest Fiscal Year	381,830	99,793
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	111,354	16,200
Financing Receivable, before Allowance for Credit Loss, Total	1,057,133	1,063,597
Commercial Portfolio Segment [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,412	1,473
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	193	228
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	7,699
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,304	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,468	7,765
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,078	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,700	144
Financing Receivable, before Allowance for Credit Loss, Total	27,743	15,836
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,897	9,266
Financing Receivable, Revolving	2,185,996	1,996,941
Financing Receivable, Originated in Current Fiscal Year	910,896	3,950,522
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,919,157	2,183,997
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,062,480	1,169,773
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,088,730	1,407,631
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,206,219	616,995
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	966,119	473,898
Financing Receivable, before Allowance for Credit Loss, Total	12,339,597	11,799,757
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,730	5,424
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	831
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	61	627
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	135	3,555
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	690	3,799
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	390	379
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	3,006	14,615
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	15	503
Financing Receivable, Revolving	2,136,241	1,920,351
Financing Receivable, Originated in Current Fiscal Year	907,033	3,886,880
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,857,825	2,097,760
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,968,939	1,133,873
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,064,273	1,238,941
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,056,185	521,793
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	845,774	471,834
Financing Receivable, before Allowance for Credit Loss, Total	11,836,270	11,271,432
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	3,485	11,139
Financing Receivable, Originated in Current Fiscal Year	48	3,024
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,965	311
Financing Receivable, Originated Two Years before Latest Fiscal Year	13,876	13,774
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,244	5,849
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,133	24,971
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34,931	293
Financing Receivable, before Allowance for Credit Loss, Total	65,682	59,361
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	470	7,290
Financing Receivable, Revolving	46,270	65,451
Financing Receivable, Originated in Current Fiscal Year	3,622	60,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	58,367	78,773
Financing Receivable, Originated Two Years before Latest Fiscal Year	74,361	22,126
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,745	162,841
Financing Receivable, Originated Four Years before Latest Fiscal Year	145,901	70,231
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	75,773	1,771
Financing Receivable, before Allowance for Credit Loss, Total	418,039	461,786
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	4,412	1,473
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	193	25
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	7,153
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,304	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,468	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,641	0
Financing Receivable, before Allowance for Credit Loss, Total	19,606	7,178
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	10,449	16,402
Financing Receivable, Originated in Current Fiscal Year	34,747	248,822
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	246,993	206,488
Financing Receivable, Originated Two Years before Latest Fiscal Year	205,945	162,321
Financing Receivable, Originated Three Years before Latest Fiscal Year	160,739	169,187
Financing Receivable, Originated Four Years before Latest Fiscal Year	166,191	169,766
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	368,714	213,338
Financing Receivable, before Allowance for Credit Loss, Total	1,193,778	1,186,324
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	113
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	113
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	3,075	2,957
Financing Receivable, Originated in Current Fiscal Year	34,703	241,141
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	239,903	180,867
Financing Receivable, Originated Two Years before Latest Fiscal Year	182,647	141,254
Financing Receivable, Originated Three Years before Latest Fiscal Year	145,269	167,496
Financing Receivable, Originated Four Years before Latest Fiscal Year	164,509	157,837
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	344,437	201,588
Financing Receivable, before Allowance for Credit Loss, Total	1,114,543	1,093,140
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	94	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	11,620
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,142	5,432
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	1,242
Financing Receivable, before Allowance for Credit Loss, Total	9,236	18,294
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	7,280	13,445
Financing Receivable, Originated in Current Fiscal Year	44	7,478
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,090	14,001
Financing Receivable, Originated Two Years before Latest Fiscal Year	14,156	15,635
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,470	1,691
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,682	11,929
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	24,243	10,508
Financing Receivable, before Allowance for Credit Loss, Total	69,965	74,687
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	203
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	34	0
Financing Receivable, before Allowance for Credit Loss, Total	34	203
Commercial Portfolio Segment [Member] | Commercial And Business Lending [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4,897	9,266
Financing Receivable, Revolving	2,196,445	2,013,343
Financing Receivable, Originated in Current Fiscal Year	945,643	4,199,344
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,166,150	2,390,485
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,268,425	1,332,094
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,249,469	1,576,818
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,372,410	786,761
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,334,833	687,236
Financing Receivable, before Allowance for Credit Loss, Total	13,533,375	12,986,081
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,730	5,424
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	831
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	61	627
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	135	3,668
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	690	3,799
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	390	379
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	3,006	14,728
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	15	503
Financing Receivable, Revolving	2,139,316	1,923,308
Financing Receivable, Originated in Current Fiscal Year	941,736	4,128,021
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,097,728	2,278,627
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,151,586	1,275,127
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,209,542	1,406,437
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,220,694	679,630
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,190,211	673,422
Financing Receivable, before Allowance for Credit Loss, Total	12,950,813	12,364,572
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	3,579	11,139
Financing Receivable, Originated in Current Fiscal Year	48	3,024
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,965	11,931
Financing Receivable, Originated Two Years before Latest Fiscal Year	23,018	19,206
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,244	5,849
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,133	24,971
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34,931	1,535
Financing Receivable, before Allowance for Credit Loss, Total	74,918	77,655
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	470	7,290
Financing Receivable, Revolving	53,550	78,896
Financing Receivable, Originated in Current Fiscal Year	3,666	68,071
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	65,457	92,774
Financing Receivable, Originated Two Years before Latest Fiscal Year	88,517	37,761
Financing Receivable, Originated Three Years before Latest Fiscal Year	29,215	164,532
Financing Receivable, Originated Four Years before Latest Fiscal Year	147,583	82,160
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	100,016	12,279
Financing Receivable, before Allowance for Credit Loss, Total	488,004	536,473
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	4,412	1,473
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	193	228
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	7,153
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,304	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,468	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,675	0
Financing Receivable, before Allowance for Credit Loss, Total	19,640	7,381
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	0	3,195
Financing Receivable, Revolving	186,359	185,825
Financing Receivable, Originated in Current Fiscal Year	330,533	1,906,552
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,831,072	789,314
Financing Receivable, Originated Two Years before Latest Fiscal Year	738,797	526,061
Financing Receivable, Originated Three Years before Latest Fiscal Year	503,260	848,843
Financing Receivable, Originated Four Years before Latest Fiscal Year	796,922	477,039
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	879,641	512,396
Financing Receivable, before Allowance for Credit Loss, Total	5,266,584	5,246,030
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	8,356
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	184
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	12,666
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	21,206
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	0	3,195
Financing Receivable, Revolving	186,359	185,825
Financing Receivable, Originated in Current Fiscal Year	330,533	1,842,395
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,773,563	776,187
Financing Receivable, Originated Two Years before Latest Fiscal Year	727,844	503,511
Financing Receivable, Originated Three Years before Latest Fiscal Year	483,401	711,947
Financing Receivable, Originated Four Years before Latest Fiscal Year	666,331	432,442
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	835,849	503,468
Financing Receivable, before Allowance for Credit Loss, Total	5,003,880	4,955,775
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	40,067
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	39,938	11,135
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	14,809
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,730	58,523
Financing Receivable, Originated Four Years before Latest Fiscal Year	81,330	26,964
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,454	5,007
Financing Receivable, before Allowance for Credit Loss, Total	168,452	156,505
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	0	24,090
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	17,571	1,446
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,953	7,741
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,129	70,608
Financing Receivable, Originated Four Years before Latest Fiscal Year	41,183	17,633
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,338	3,921
Financing Receivable, before Allowance for Credit Loss, Total	86,174	125,439
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	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	546
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	7,765
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,078	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	8,078	8,311
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	25,335	33,847
Financing Receivable, Originated in Current Fiscal Year	76,479	502,541
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	613,988	762,940
Financing Receivable, Originated Two Years before Latest Fiscal Year	821,029	272,219
Financing Receivable, Originated Three Years before Latest Fiscal Year	234,095	414,192
Financing Receivable, Originated Four Years before Latest Fiscal Year	339,215	2,991
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,338	5,912
Financing Receivable, before Allowance for Credit Loss, Total	2,117,479	1,994,642
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	25,335	33,847
Financing Receivable, Originated in Current Fiscal Year	26,855	359,610
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	470,524	720,429
Financing Receivable, Originated Two Years before Latest Fiscal Year	803,327	223,239
Financing Receivable, Originated Three Years before Latest Fiscal Year	153,221	175,056
Financing Receivable, Originated Four Years before Latest Fiscal Year	122,501	2,991
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,313	5,768
Financing Receivable, before Allowance for Credit Loss, Total	1,609,076	1,520,940
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	20,611
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	1,773	51,262
Financing Receivable, Originated Four Years before Latest Fiscal Year	23,650	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	25,423	71,873
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	49,624	122,320
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	143,464	42,511
Financing Receivable, Originated Two Years before Latest Fiscal Year	17,702	48,980
Financing Receivable, Originated Three Years before Latest Fiscal Year	79,101	187,874
Financing Receivable, Originated Four Years before Latest Fiscal Year	193,064	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, before Allowance for Credit Loss, Total	482,955	401,685
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	25	144
Financing Receivable, before Allowance for Credit Loss, Total	25	144
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	0	3,195
Financing Receivable, Revolving	211,694	219,672
Financing Receivable, Originated in Current Fiscal Year	407,012	2,409,093
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,445,060	1,552,254
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,559,826	798,280
Financing Receivable, Originated Three Years before Latest Fiscal Year	737,355	1,263,035
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,136,137	480,030
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	886,979	518,308
Financing Receivable, before Allowance for Credit Loss, Total	7,384,063	7,240,672
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	8,356
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	184
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	12,666
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	21,206
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	0	3,195
Financing Receivable, Revolving	211,694	219,672
Financing Receivable, Originated in Current Fiscal Year	357,388	2,202,005
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,244,087	1,496,616
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,531,171	726,750
Financing Receivable, Originated Three Years before Latest Fiscal Year	636,622	887,003
Financing Receivable, Originated Four Years before Latest Fiscal Year	788,832	435,433
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	843,162	509,236
Financing Receivable, before Allowance for Credit Loss, Total	6,612,956	6,476,715
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	60,678
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	39,938	11,135
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	14,809
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,503	109,785
Financing Receivable, Originated Four Years before Latest Fiscal Year	104,980	26,964
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,454	5,007
Financing Receivable, before Allowance for Credit Loss, Total	193,875	228,378
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	49,624	146,410
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	161,035	43,957
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,655	56,721
Financing Receivable, Originated Three Years before Latest Fiscal Year	84,230	258,482
Financing Receivable, Originated Four Years before Latest Fiscal Year	234,247	17,633
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,338	3,921
Financing Receivable, before Allowance for Credit Loss, Total	569,129	527,124
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	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	546
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	7,765
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,078	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	25	144
Financing Receivable, before Allowance for Credit Loss, Total	8,103	8,455
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	6,205	17,155
Financing Receivable, Revolving	865,210	883,116
Financing Receivable, Originated in Current Fiscal Year	407,117	1,557,953
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,463,375	1,093,589
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,019,592	1,045,901
Financing Receivable, Originated Three Years before Latest Fiscal Year	956,726	1,916,146
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,834,907	1,540,663
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,333,799	2,899,493
Financing Receivable, before Allowance for Credit Loss, Total	10,880,726	10,936,861
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,171	8,194
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	450
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	506	1,899
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	571	3,102
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	785	3,772
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	1,001	736
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	170	866
Financing Receivable, Allowance for Credit Loss, Writeoff	5,204	19,019
Consumer Loan [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,762	15,788
Financing Receivable, Revolving	862,032	879,343
Financing Receivable, Originated in Current Fiscal Year	407,117	1,554,645
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,459,565	1,087,883
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,012,780	1,036,343
Financing Receivable, Originated Three Years before Latest Fiscal Year	941,882	1,897,871
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,818,960	1,530,622
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,283,113	2,857,749
Financing Receivable, before Allowance for Credit Loss, Total	10,785,449	10,844,456
Consumer Loan [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	205	327
Financing Receivable, Revolving	844	1,191
Financing Receivable, Originated in Current Fiscal Year	0	322
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	529	444
Financing Receivable, Originated Two Years before Latest Fiscal Year	727	1,009
Financing Receivable, Originated Three Years before Latest Fiscal Year	739	734
Financing Receivable, Originated Four Years before Latest Fiscal Year	557	50
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	373	388
Financing Receivable, before Allowance for Credit Loss, Total	3,769	4,138
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	2,005	2,374
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	580
Financing Receivable, Originated Two Years before Latest Fiscal Year	576	292
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,666	129
Financing Receivable, Originated Four Years before Latest Fiscal Year	127	300
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	296	0
Financing Receivable, before Allowance for Credit Loss, Total	8,670	3,675
Consumer Loan [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	238	1,040
Financing Receivable, Revolving	329	208
Financing Receivable, Originated in Current Fiscal Year	0	2,986
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,281	4,682
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,509	8,257
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,439	17,412
Financing Receivable, Originated Four Years before Latest Fiscal Year	15,263	9,691
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	50,017	41,356
Financing Receivable, before Allowance for Credit Loss, Total	82,838	84,592
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	64,436	255,789
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	262,046	242,469
Financing Receivable, Originated Two Years before Latest Fiscal Year	253,627	485,469
Financing Receivable, Originated Three Years before Latest Fiscal Year	460,900	1,501,605
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,477,251	1,508,508
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,209,474	2,800,117
Financing Receivable, before Allowance for Credit Loss, Total	6,727,734	6,793,957
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	6	115
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	27	209
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	21	320
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	24	74
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	60	430
Financing Receivable, Allowance for Credit Loss, Writeoff	138	1,148
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	64,436	253,364
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	259,990	238,787
Financing Receivable, Originated Two Years before Latest Fiscal Year	249,460	480,076
Financing Receivable, Originated Three Years before Latest Fiscal Year	450,109	1,488,335
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,465,780	1,499,223
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,164,383	2,764,379
Financing Receivable, before Allowance for Credit Loss, Total	6,654,158	6,724,164
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
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32
Financing Receivable, before Allowance for Credit Loss, Total	32
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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	580
Financing Receivable, Originated Two Years before Latest Fiscal Year	576	292
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,655	129
Financing Receivable, Originated Four Years before Latest Fiscal Year	127	300
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	296	0
Financing Receivable, before Allowance for Credit Loss, Total	6,654	1,301
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	0	2,425
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,056	3,102
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,591	5,101
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,136	13,141
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,344	8,985
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	44,763	35,738
Financing Receivable, before Allowance for Credit Loss, Total	66,890	68,492
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	339,662	1,288,121
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,188,224	844,519
Financing Receivable, Originated Two Years before Latest Fiscal Year	760,071	555,174
Financing Receivable, Originated Three Years before Latest Fiscal Year	490,151	391,940
Financing Receivable, Originated Four Years before Latest Fiscal Year	335,809	26,742
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,417	2
Financing Receivable, before Allowance for Credit Loss, Total	3,136,334	3,106,498
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	432
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	493	1,699
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	536	2,804
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	759	3,384
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	972	433
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	10	0
Financing Receivable, Allowance for Credit Loss, Writeoff	2,770	8,752
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	339,662	1,287,267
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,186,673	842,838
Financing Receivable, Originated Two Years before Latest Fiscal Year	757,889	551,549
Financing Receivable, Originated Three Years before Latest Fiscal Year	486,428	388,064
Financing Receivable, Originated Four Years before Latest Fiscal Year	332,417	26,402
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,052	2
Financing Receivable, before Allowance for Credit Loss, Total	3,125,121	3,096,122
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	295
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	496	325
Financing Receivable, Originated Two Years before Latest Fiscal Year	511	814
Financing Receivable, Originated Three Years before Latest Fiscal Year	697	621
Financing Receivable, Originated Four Years before Latest Fiscal Year	553	50
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	57	0
Financing Receivable, before Allowance for Credit Loss, Total	2,314	2,105
Consumer Loan [Member] | Automobile Loan [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	11
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, before Allowance for Credit Loss, Total	11
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	559
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,055	1,356
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,671	2,811
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,015	3,255
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,839	290
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	308	0
Financing Receivable, before Allowance for Credit Loss, Total	8,888	8,271
Consumer Loan [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,990	16,612
Financing Receivable, Revolving	618,342	624,078
Financing Receivable, Originated in Current Fiscal Year	60	857
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,309	2,528
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,450	3,251
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,810	21,634
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,137	5,147
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	58,967	55,776
Financing Receivable, before Allowance for Credit Loss, Total	706,075	713,271
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	2	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0	26
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0	5
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0	5
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0	380
Financing Receivable, Allowance for Credit Loss, Writeoff	3	416
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	5,547	15,259
Financing Receivable, Revolving	618,030	623,853
Financing Receivable, Originated in Current Fiscal Year	60	855
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,149	2,188
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,989	2,728
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,489	20,514
Financing Receivable, Originated Four Years before Latest Fiscal Year	20,088	4,733
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	53,737	49,793
Financing Receivable, before Allowance for Credit Loss, Total	698,542	704,664
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	205	315
Financing Receivable, Revolving	43	52
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	119
Financing Receivable, Originated Two Years before Latest Fiscal Year	216	190
Financing Receivable, Originated Three Years before Latest Fiscal Year	40	104
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	284	368
Financing Receivable, before Allowance for Credit Loss, Total	583	833
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	238	1,038
Financing Receivable, Revolving	269	173
Financing Receivable, Originated in Current Fiscal Year	0	2
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	160	221
Financing Receivable, Originated Two Years before Latest Fiscal Year	245	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	281	1,016
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,049	414
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,946	5,615
Financing Receivable, before Allowance for Credit Loss, Total	6,950	7,774
Consumer Loan [Member] | Other Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	215	543
Financing Receivable, Revolving	246,868	259,038
Financing Receivable, Originated in Current Fiscal Year	2,959	13,186
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,796	4,073
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,444	2,007
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,865	967
Financing Receivable, Originated Four Years before Latest Fiscal Year	710	266
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	42,941	43,598
Financing Receivable, before Allowance for Credit Loss, Total	310,583	323,135
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,170	8,194
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0	18
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5	85
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	8	63
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5	63
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	5	224
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	100	56
Financing Receivable, Allowance for Credit Loss, Writeoff	2,293	8,703
Consumer Loan [Member] | Other Consumer [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	215	529
Financing Receivable, Revolving	244,002	255,490
Financing Receivable, Originated in Current Fiscal Year	2,959	13,159
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,753	4,070
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,442	1,990
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,856	958
Financing Receivable, Originated Four Years before Latest Fiscal Year	675	264
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	42,941	43,575
Financing Receivable, before Allowance for Credit Loss, Total	307,628	319,506
Consumer Loan [Member] | Other Consumer [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	12
Financing Receivable, Revolving	801	1,139
Financing Receivable, Originated in Current Fiscal Year	0	27
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	33	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	5
Financing Receivable, Originated Three Years before Latest Fiscal Year	2	9
Financing Receivable, Originated Four Years before Latest Fiscal Year	4	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	20
Financing Receivable, before Allowance for Credit Loss, Total	840	1,200
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	2,005	2,374
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	2,005	2,374
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	60	35
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10	3
Financing Receivable, Originated Two Years before Latest Fiscal Year	2	12
Financing Receivable, Originated Three Years before Latest Fiscal Year	7	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	31	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	3
Financing Receivable, before Allowance for Credit Loss, Total	$ 110	$ 55