Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 23,745	$ 69,246
Financing Receivable, Revolving	3,087,079	3,173,996
Financing Receivable, Originated in Current Fiscal Year	1,663,836	6,590,550
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,287,678	5,127,451
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,711,270	3,189,745
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,880,788	1,937,912
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,633,471	1,770,647
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,898,205	2,661,424
Total	24,162,328	24,451,724
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	602
Financing Receivable, Revolving	7,775	11,341
Financing Receivable, Originated in Current Fiscal Year	3,514	99,324
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	96,877	141,213
Financing Receivable, Originated Two Years before Latest Fiscal Year	170,076	98,320
Financing Receivable, Originated Three Years before Latest Fiscal Year	123,240	958
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,703	22,498
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	18,360	9,911
Total	429,545	383,566
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	21,671	27,819
Financing Receivable, Revolving	3,055,640	3,149,039
Financing Receivable, Originated in Current Fiscal Year	1,641,033	6,413,278
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,085,644	4,873,347
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,462,823	2,960,705
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,673,970	1,892,247
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,593,822	1,716,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,792,071	2,570,534
Total	23,305,003	23,575,376
Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,800	2,565
Financing Receivable, Revolving	23,479	13,483
Financing Receivable, Originated in Current Fiscal Year	19,279	59,116
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	87,565	51,593
Financing Receivable, Originated Two Years before Latest Fiscal Year	58,729	106,947
Financing Receivable, Originated Three Years before Latest Fiscal Year	40,720	6,038
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,761	11,426
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	27,955	33,324
Total	264,488	281,928
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	274	38,260
Financing Receivable, Revolving	184	133
Financing Receivable, Originated in Current Fiscal Year	10	18,831
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	17,592	61,298
Financing Receivable, Originated Two Years before Latest Fiscal Year	19,643	23,773
Financing Receivable, Originated Three Years before Latest Fiscal Year	42,859	38,669
Financing Receivable, Originated Four Years before Latest Fiscal Year	23,185	20,496
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	59,819	47,655
Total	163,292	210,854
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	21,409	56,745
Financing Receivable, Revolving	2,401,249	2,436,370
Financing Receivable, Originated in Current Fiscal Year	1,212,394	4,390,063
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,068,409	3,610,033
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,406,483	2,547,526
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,310,939	918,783
Financing Receivable, Originated Four Years before Latest Fiscal Year	730,967	839,831
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,396,867	810,485
Total	15,527,307	15,553,091
Total commercial | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	7,298	10,272
Financing Receivable, Originated in Current Fiscal Year	3,514	99,311
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	96,757	140,803
Financing Receivable, Originated Two Years before Latest Fiscal Year	170,035	97,964
Financing Receivable, Originated Three Years before Latest Fiscal Year	123,143	813
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,569	22,361
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,565	8,562
Total	427,882	380,086
Total commercial | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	19,609	17,524
Financing Receivable, Revolving	2,372,034	2,414,537
Financing Receivable, Originated in Current Fiscal Year	1,189,673	4,216,457
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,869,571	3,359,482
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,161,950	2,325,808
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,111,718	880,708
Financing Receivable, Originated Four Years before Latest Fiscal Year	700,255	797,441
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,341,977	760,973
Total	14,747,179	14,755,405
Total commercial | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,800	2,565
Financing Receivable, Revolving	21,916	11,561
Financing Receivable, Originated in Current Fiscal Year	19,207	57,916
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	87,055	50,905
Financing Receivable, Originated Two Years before Latest Fiscal Year	58,167	106,295
Financing Receivable, Originated Three Years before Latest Fiscal Year	40,026	6,038
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,636	11,247
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	27,227	32,150
Total	260,234	276,111
Total commercial | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	36,655
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	16,379
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	15,026	58,845
Financing Receivable, Originated Two Years before Latest Fiscal Year	16,330	17,460
Financing Receivable, Originated Three Years before Latest Fiscal Year	36,052	31,224
Financing Receivable, Originated Four Years before Latest Fiscal Year	14,507	8,781
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,098	8,801
Total	92,012	141,490
Total commercial | PPP
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	292,213	767,757
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	544,353	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
Total	836,566	767,757
Total commercial | PPP | 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	1,642	3,988
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,434	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
Total	5,076	3,988
Total commercial | PPP | 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	281,120	745,767
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	527,971	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
Total	809,091	745,767
Total commercial | PPP | Potential Problem [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	9,450	18,002
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	12,948	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
Total	22,398	18,002
Total commercial | Commercial And Industrial Financing Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,809	24,045
Financing Receivable, Revolving	2,198,196	2,194,534
Financing Receivable, Originated in Current Fiscal Year	383,045	1,417,548
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,330,929	1,509,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,428,343	1,292,938
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,221,448	502,962
Financing Receivable, Originated Four Years before Latest Fiscal Year	391,692	321,471
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	710,849	462,394
Total	7,664,501	7,701,422
Total commercial | Commercial And Industrial Financing Receivable [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	7,298	10,159
Financing Receivable, Originated in Current Fiscal Year	96	2,719
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,805	39,854
Financing Receivable, Originated Two Years before Latest Fiscal Year	59,502	37,042
Financing Receivable, Originated Three Years before Latest Fiscal Year	48,156	113
Financing Receivable, Originated Four Years before Latest Fiscal Year	207	215
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	185	67
Total	119,249	90,169
Total commercial | Commercial And Industrial Financing Receivable [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,009	4,628
Financing Receivable, Revolving	2,170,406	2,177,138
Financing Receivable, Originated in Current Fiscal Year	378,782	1,389,260
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,303,573	1,435,519
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,333,680	1,182,302
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,119,175	483,957
Financing Receivable, Originated Four Years before Latest Fiscal Year	389,390	305,998
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	694,910	453,734
Total	7,389,917	7,427,908
Total commercial | Commercial And Industrial Financing Receivable [Member] | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,800	2,565
Financing Receivable, Revolving	20,492	7,237
Financing Receivable, Originated in Current Fiscal Year	4,166	19,331
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	17,407	28,413
Financing Receivable, Originated Two Years before Latest Fiscal Year	34,437	56,580
Financing Receivable, Originated Three Years before Latest Fiscal Year	37,587	2,269
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,761	6,477
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,294	1,179
Total	122,143	121,487
Total commercial | Commercial And Industrial Financing Receivable [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	16,852
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	6,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,143	5,789
Financing Receivable, Originated Two Years before Latest Fiscal Year	725	17,014
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,530	16,623
Financing Receivable, Originated Four Years before Latest Fiscal Year	334	8,781
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,461	7,414
Total	33,192	61,859
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11,868	1,150
Financing Receivable, Revolving	21,538	21,621
Financing Receivable, Originated in Current Fiscal Year	59,656	191,847
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	183,520	221,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	213,178	128,660
Financing Receivable, Originated Three Years before Latest Fiscal Year	129,123	102,012
Financing Receivable, Originated Four Years before Latest Fiscal Year	83,479	152,067
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	192,743	83,598
Total	883,237	900,912
Total commercial | Commercial real estate — owner occupied | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	113
Financing Receivable, Originated in Current Fiscal Year	0	1,882
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,014	3,122
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,080	300
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	658
Financing Receivable, Originated Four Years before Latest Fiscal Year	424	264
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	260	0
Total	7,777	6,339
Total commercial | Commercial real estate — owner occupied | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11,868	1,150
Financing Receivable, Revolving	20,916	18,022
Financing Receivable, Originated in Current Fiscal Year	59,551	185,861
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	174,514	209,069
Financing Receivable, Originated Two Years before Latest Fiscal Year	210,032	128,360
Financing Receivable, Originated Three Years before Latest Fiscal Year	128,471	99,546
Financing Receivable, Originated Four Years before Latest Fiscal Year	81,020	147,366
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	184,983	79,111
Total	859,487	867,335
Total commercial | Commercial real estate — owner occupied | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	622	3,486
Financing Receivable, Originated in Current Fiscal Year	105	4,104
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,992	8,916
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,066	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	652	1,490
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,035	4,437
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,493	3,747
Total	15,965	26,179
Total commercial | Commercial real estate — owner occupied | 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	318
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7	740
Total	7	1,058
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15,677	25,195
Financing Receivable, Revolving	2,219,734	2,216,154
Financing Receivable, Originated in Current Fiscal Year	734,913	2,377,152
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,058,802	1,730,682
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,641,521	1,421,598
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,350,571	604,974
Financing Receivable, Originated Four Years before Latest Fiscal Year	475,170	473,539
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	903,592	545,992
Total	9,384,303	9,370,091
Total commercial | Commercial and business lending | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	7,298	10,272
Financing Receivable, Originated in Current Fiscal Year	1,738	8,589
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	12,253	42,976
Financing Receivable, Originated Two Years before Latest Fiscal Year	61,582	37,342
Financing Receivable, Originated Three Years before Latest Fiscal Year	48,156	771
Financing Receivable, Originated Four Years before Latest Fiscal Year	631	479
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	444	67
Total	132,102	100,496
Total commercial | Commercial and business lending | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	13,877	5,778
Financing Receivable, Revolving	2,191,322	2,195,160
Financing Receivable, Originated in Current Fiscal Year	719,454	2,320,888
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,006,059	1,644,588
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,543,712	1,310,662
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,247,646	583,503
Financing Receivable, Originated Four Years before Latest Fiscal Year	470,410	453,364
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	879,893	532,845
Total	9,058,495	9,041,009
Total commercial | Commercial and business lending | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,800	2,565
Financing Receivable, Revolving	21,114	10,723
Financing Receivable, Originated in Current Fiscal Year	13,721	41,437
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	34,347	37,329
Financing Receivable, Originated Two Years before Latest Fiscal Year	35,502	56,580
Financing Receivable, Originated Three Years before Latest Fiscal Year	38,238	3,759
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,796	10,915
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,786	4,926
Total	160,506	165,668
Total commercial | Commercial and business lending | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	16,852
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	6,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,143	5,789
Financing Receivable, Originated Two Years before Latest Fiscal Year	725	17,014
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,530	16,941
Financing Receivable, Originated Four Years before Latest Fiscal Year	334	8,781
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,468	8,154
Total	33,200	62,917
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	30,774
Financing Receivable, Revolving	154,649	172,335
Financing Receivable, Originated in Current Fiscal Year	351,662	1,366,364
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,252,057	1,140,297
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,118,634	763,933
Financing Receivable, Originated Three Years before Latest Fiscal Year	673,414	288,533
Financing Receivable, Originated Four Years before Latest Fiscal Year	234,276	363,779
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	476,014	247,343
Total	4,260,706	4,342,584
Total commercial | Commercial real estate — investor | 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	1,776	90,235
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	83,975	97,333
Financing Receivable, Originated Two Years before Latest Fiscal Year	104,806	12,339
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,161	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,897	21,882
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,121	8,465
Total	232,735	230,254
Total commercial | Commercial real estate — investor | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	10,971
Financing Receivable, Revolving	153,847	171,497
Financing Receivable, Originated in Current Fiscal Year	344,412	1,249,644
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,106,623	976,332
Financing Receivable, Originated Two Years before Latest Fiscal Year	989,271	720,237
Financing Receivable, Originated Three Years before Latest Fiscal Year	635,944	271,987
Financing Receivable, Originated Four Years before Latest Fiscal Year	208,367	341,658
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	445,269	211,360
Total	3,883,733	3,942,714
Total commercial | Commercial real estate — investor | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	802	838
Financing Receivable, Originated in Current Fiscal Year	5,473	16,343
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52,576	13,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,952	30,911
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,787	2,279
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,840	239
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,321	27,209
Total	85,752	91,396
Total commercial | Commercial real estate — investor | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	19,803
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	10,141
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,883	53,056
Financing Receivable, Originated Two Years before Latest Fiscal Year	15,605	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,522	14,267
Financing Receivable, Originated Four Years before Latest Fiscal Year	14,173	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	302	309
Total	58,485	78,220
Total commercial | Real Estate Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,732	776
Financing Receivable, Revolving	26,865	47,880
Financing Receivable, Originated in Current Fiscal Year	125,819	646,547
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	757,550	739,055
Financing Receivable, Originated Two Years before Latest Fiscal Year	646,328	361,996
Financing Receivable, Originated Three Years before Latest Fiscal Year	286,953	25,277
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,520	2,513
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,262	17,150
Total	1,882,299	1,840,417
Total commercial | Real Estate Construction | 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	487
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	529	494
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,648	48,283
Financing Receivable, Originated Three Years before Latest Fiscal Year	58,826	42
Financing Receivable, Originated Four Years before Latest Fiscal Year	42	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	30
Total	63,045	49,336
Total commercial | Real Estate Construction | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,732	776
Financing Receivable, Revolving	26,865	47,880
Financing Receivable, Originated in Current Fiscal Year	125,807	645,925
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	756,890	738,561
Financing Receivable, Originated Two Years before Latest Fiscal Year	628,967	294,910
Financing Receivable, Originated Three Years before Latest Fiscal Year	228,127	25,219
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,478	2,420
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	16,815	16,768
Total	1,804,950	1,771,682
Total commercial | Real Estate Construction | Potential Problem [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	12	135
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	131	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	13,713	18,803
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	93
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	119	15
Total	13,977	19,046
Total commercial | Real Estate Construction | 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	16
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	327	338
Total	327	353
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,732	31,549
Financing Receivable, Revolving	181,515	220,215
Financing Receivable, Originated in Current Fiscal Year	477,481	2,012,911
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,009,607	1,879,352
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,764,962	1,125,929
Financing Receivable, Originated Three Years before Latest Fiscal Year	960,368	313,810
Financing Receivable, Originated Four Years before Latest Fiscal Year	255,796	366,292
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	493,275	264,493
Total	6,143,004	6,183,001
Total commercial | Commercial Real Estate | 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	1,776	90,722
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	84,504	97,827
Financing Receivable, Originated Two Years before Latest Fiscal Year	108,453	60,622
Financing Receivable, Originated Three Years before Latest Fiscal Year	74,987	42
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,939	21,882
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,121	8,494
Total	295,780	279,590
Total commercial | Commercial Real Estate | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,732	11,746
Financing Receivable, Revolving	180,712	219,377
Financing Receivable, Originated in Current Fiscal Year	470,219	1,895,569
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,863,513	1,714,893
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,618,239	1,015,146
Financing Receivable, Originated Three Years before Latest Fiscal Year	864,072	297,205
Financing Receivable, Originated Four Years before Latest Fiscal Year	229,845	344,078
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	462,084	228,127
Total	5,688,683	5,714,396
Total commercial | Commercial Real Estate | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	802	838
Financing Receivable, Originated in Current Fiscal Year	5,486	16,479
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52,708	13,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,665	49,714
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,787	2,279
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,840	332
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,440	27,224
Total	99,728	110,442
Total commercial | Commercial Real Estate | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	19,803
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	10,141
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,883	53,056
Financing Receivable, Originated Two Years before Latest Fiscal Year	15,605	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,522	14,283
Financing Receivable, Originated Four Years before Latest Fiscal Year	14,173	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	630	647
Total	58,813	78,573
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,336	12,501
Financing Receivable, Revolving	685,830	737,626
Financing Receivable, Originated in Current Fiscal Year	451,442	2,200,487
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,219,269	1,517,417
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,304,787	642,218
Financing Receivable, Originated Three Years before Latest Fiscal Year	569,850	1,019,128
Financing Receivable, Originated Four Years before Latest Fiscal Year	902,504	930,816
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,501,338	1,850,939
Total	8,635,020	8,898,632
Total consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	602
Financing Receivable, Revolving	477	1,069
Financing Receivable, Originated in Current Fiscal Year	0	13
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	121	410
Financing Receivable, Originated Two Years before Latest Fiscal Year	40	356
Financing Receivable, Originated Three Years before Latest Fiscal Year	96	145
Financing Receivable, Originated Four Years before Latest Fiscal Year	133	137
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	795	1,349
Total	1,663	3,480
Total consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,062	10,294
Financing Receivable, Revolving	683,606	734,502
Financing Receivable, Originated in Current Fiscal Year	451,360	2,196,822
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,216,072	1,513,865
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,300,872	634,897
Financing Receivable, Originated Three Years before Latest Fiscal Year	562,252	1,011,539
Financing Receivable, Originated Four Years before Latest Fiscal Year	893,567	918,785
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,450,094	1,809,561
Total	8,557,824	8,819,971
Total consumer | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	1,563	1,922
Financing Receivable, Originated in Current Fiscal Year	72	1,200
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	510	689
Financing Receivable, Originated Two Years before Latest Fiscal Year	561	652
Financing Receivable, Originated Three Years before Latest Fiscal Year	694	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	126	179
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	728	1,174
Total	4,254	5,817
Total consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	274	1,605
Financing Receivable, Revolving	184	133
Financing Receivable, Originated in Current Fiscal Year	10	2,452
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,566	2,454
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,313	6,313
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,807	7,445
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,678	11,714
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	49,722	38,854
Total	71,280	69,364
Total consumer | Residential mortgage
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	449,452	2,187,918
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,208,058	1,493,903
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,284,324	621,983
Financing Receivable, Originated Three Years before Latest Fiscal Year	552,885	1,005,290
Financing Receivable, Originated Four Years before Latest Fiscal Year	890,386	923,105
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,300,113	1,646,124
Total	7,685,218	7,878,324
Total consumer | Residential mortgage | 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	121	355
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	330
Financing Receivable, Originated Three Years before Latest Fiscal Year	37	102
Financing Receivable, Originated Four Years before Latest Fiscal Year	133	126
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	525	537
Total	816	1,450
Total consumer | Residential mortgage | 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	449,381	2,185,240
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,205,662	1,490,589
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,280,604	615,118
Financing Receivable, Originated Three Years before Latest Fiscal Year	545,743	998,072
Financing Receivable, Originated Four Years before Latest Fiscal Year	881,884	911,797
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,257,349	1,612,971
Total	7,620,622	7,813,788
Total consumer | Residential mortgage | Potential Problem [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	72	1,200
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	510	689
Financing Receivable, Originated Two Years before Latest Fiscal Year	561	652
Financing Receivable, Originated Three Years before Latest Fiscal Year	674	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	126	179
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	582	1,028
Total	2,524	3,749
Total consumer | Residential mortgage | 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	1,478
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,765	2,271
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,160	5,882
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,431	7,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,243	11,003
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	41,657	31,587
Total	61,256	59,337
Total consumer | Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,153	12,421
Financing Receivable, Revolving	528,455	572,041
Financing Receivable, Originated in Current Fiscal Year	81	3,022
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,866	13,141
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,713	16,216
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,981	11,952
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,745	6,518
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	83,805	84,364
Total	651,647	707,255
Total consumer | Home Equity Loan [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	596
Financing Receivable, Revolving	25	631
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	39
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	14
Financing Receivable, Originated Three Years before Latest Fiscal Year	60	39
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	4
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	265	804
Total	350	1,532
Total consumer | Home Equity Loan [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,891	10,224
Financing Receivable, Revolving	526,777	569,389
Financing Receivable, Originated in Current Fiscal Year	71	2,057
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,080	12,968
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,595	15,792
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,535	11,594
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,333	5,803
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	75,385	76,165
Total	639,776	693,767
Total consumer | Home Equity Loan [Member] | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	1,563	1,922
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	20	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	146	146
Total	1,729	2,068
Total consumer | Home Equity Loan [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	262	1,600
Financing Receivable, Revolving	91	100
Financing Receivable, Originated in Current Fiscal Year	10	965
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	786	134
Financing Receivable, Originated Two Years before Latest Fiscal Year	118	410
Financing Receivable, Originated Three Years before Latest Fiscal Year	366	319
Financing Receivable, Originated Four Years before Latest Fiscal Year	413	711
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,008	7,249
Total	9,792	9,888
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	183	81
Financing Receivable, Revolving	157,375	165,585
Financing Receivable, Originated in Current Fiscal Year	1,908	9,547
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,345	10,374
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,749	4,019
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,984	1,886
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,374	1,192
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	117,421	120,451
Total	298,156	313,054
Total consumer | Other consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	5
Financing Receivable, Revolving	452	438
Financing Receivable, Originated in Current Fiscal Year	0	13
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	16
Financing Receivable, Originated Two Years before Latest Fiscal Year	40	11
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	4
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	7
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5	8
Total	497	498
Total consumer | Other consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	171	70
Financing Receivable, Revolving	156,829	165,114
Financing Receivable, Originated in Current Fiscal Year	1,908	9,525
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,330	10,309
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,674	3,987
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,974	1,872
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,351	1,185
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	117,360	120,425
Total	297,427	312,416
Total consumer | Other consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	13	5
Financing Receivable, Revolving	93	33
Financing Receivable, Originated in Current Fiscal Year	0	9
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	15	49
Financing Receivable, Originated Two Years before Latest Fiscal Year	35	21
Financing Receivable, Originated Three Years before Latest Fiscal Year	10	10
Financing Receivable, Originated Four Years before Latest Fiscal Year	23	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	56	18
Total	$ 231	$ 140