Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 60,747	$ 69,246
Financing Receivable, Revolving	3,116,417	3,173,996
Financing Receivable, Originated in Current Fiscal Year	4,935,308	6,590,550
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,107,723	5,127,451
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,915,934	3,189,745
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,057,932	1,937,912
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,278,698	1,770,647
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,209,661	2,661,424
Total	23,621,673	24,451,724
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	138	602
Financing Receivable, Revolving	2,010	11,341
Financing Receivable, Originated in Current Fiscal Year	63,212	99,324
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	71,061	141,213
Financing Receivable, Originated Two Years before Latest Fiscal Year	118,234	98,320
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,034	958
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,300	22,498
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,832	9,911
Total	288,683	383,566
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	57,187	27,819
Financing Receivable, Revolving	3,085,805	3,149,039
Financing Receivable, Originated in Current Fiscal Year	4,828,025	6,413,278
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,988,301	4,873,347
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,712,002	2,960,705
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,957,507	1,892,247
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,242,208	1,716,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,132,995	2,570,534
Total	22,946,842	23,575,376
Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,836	2,565
Financing Receivable, Revolving	28,435	13,483
Financing Receivable, Originated in Current Fiscal Year	18,306	59,116
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	37,707	51,593
Financing Receivable, Originated Two Years before Latest Fiscal Year	71,134	106,947
Financing Receivable, Originated Three Years before Latest Fiscal Year	46,635	6,038
Financing Receivable, Originated Four Years before Latest Fiscal Year	27,563	11,426
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	21,305	33,324
Total	251,087	281,928
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	586	38,260
Financing Receivable, Revolving	167	133
Financing Receivable, Originated in Current Fiscal Year	25,766	18,831
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10,653	61,298
Financing Receivable, Originated Two Years before Latest Fiscal Year	14,563	23,773
Financing Receivable, Originated Three Years before Latest Fiscal Year	31,756	38,669
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,627	20,496
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	44,529	47,655
Total	135,062	210,854
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	54,618	56,745
Financing Receivable, Revolving	2,442,565	2,436,370
Financing Receivable, Originated in Current Fiscal Year	3,520,198	4,390,063
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,056,052	3,610,033
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,847,007	2,547,526
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,580,116	918,783
Financing Receivable, Originated Four Years before Latest Fiscal Year	539,047	839,831
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,135,508	810,485
Total	15,120,493	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	1,606	10,272
Financing Receivable, Originated in Current Fiscal Year	63,212	99,311
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	71,061	140,803
Financing Receivable, Originated Two Years before Latest Fiscal Year	118,220	97,964
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,858	813
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,300	22,361
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,076	8,562
Total	287,333	380,086
Total commercial | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	51,793	17,524
Financing Receivable, Revolving	2,412,524	2,414,537
Financing Receivable, Originated in Current Fiscal Year	3,415,239	4,216,457
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,939,040	3,359,482
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,648,264	2,325,808
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,485,495	880,708
Financing Receivable, Originated Four Years before Latest Fiscal Year	510,266	797,441
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,103,537	760,973
Total	14,514,363	14,755,405
Total commercial | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,825	2,565
Financing Receivable, Revolving	28,435	11,561
Financing Receivable, Originated in Current Fiscal Year	17,758	57,916
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	37,367	50,905
Financing Receivable, Originated Two Years before Latest Fiscal Year	70,725	106,295
Financing Receivable, Originated Three Years before Latest Fiscal Year	46,294	6,038
Financing Receivable, Originated Four Years before Latest Fiscal Year	27,481	11,247
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,481	32,150
Total	248,541	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	23,989	16,379
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,584	58,845
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,798	17,460
Financing Receivable, Originated Three Years before Latest Fiscal Year	26,470	31,224
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	8,781
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,415	8,801
Total	70,256	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	151,940	767,757
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	30,180	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	182,121	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	212	3,988
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	281	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	493	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	147,568	745,767
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	29,900	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	177,467	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	4,160	18,002
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
Total	4,160	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	4,910	24,045
Financing Receivable, Revolving	2,307,525	2,194,534
Financing Receivable, Originated in Current Fiscal Year	1,671,979	1,417,548
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,052,674	1,509,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,168,685	1,292,938
Financing Receivable, Originated Three Years before Latest Fiscal Year	830,748	502,962
Financing Receivable, Originated Four Years before Latest Fiscal Year	269,240	321,471
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	626,609	462,394
Total	7,927,459	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	1,396	10,159
Financing Receivable, Originated in Current Fiscal Year	5,900	2,719
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	193	39,854
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,918	37,042
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	113
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	215
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,990	67
Total	39,397	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	2,085	4,628
Financing Receivable, Revolving	2,278,181	2,177,138
Financing Receivable, Originated in Current Fiscal Year	1,664,130	1,389,260
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,046,760	1,435,519
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,092,662	1,182,302
Financing Receivable, Originated Three Years before Latest Fiscal Year	802,214	483,957
Financing Receivable, Originated Four Years before Latest Fiscal Year	249,129	305,998
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	621,500	453,734
Total	7,754,575	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	2,825	2,565
Financing Receivable, Revolving	27,948	7,237
Financing Receivable, Originated in Current Fiscal Year	1,933	19,331
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,555	28,413
Financing Receivable, Originated Two Years before Latest Fiscal Year	46,997	56,580
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,286	2,269
Financing Receivable, Originated Four Years before Latest Fiscal Year	20,111	6,477
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,160	1,179
Total	124,990	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	17	6,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	166	5,789
Financing Receivable, Originated Two Years before Latest Fiscal Year	108	17,014
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,248	16,623
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	8,781
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	959	7,414
Total	8,497	61,859
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11,667	1,150
Financing Receivable, Revolving	23,127	21,621
Financing Receivable, Originated in Current Fiscal Year	150,094	191,847
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	182,668	221,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	205,518	128,660
Financing Receivable, Originated Three Years before Latest Fiscal Year	115,366	102,012
Financing Receivable, Originated Four Years before Latest Fiscal Year	64,353	152,067
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	138,427	83,598
Total	879,554	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	211	113
Financing Receivable, Originated in Current Fiscal Year	0	1,882
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,303	3,122
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,368	300
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	658
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	264
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	250	0
Total	15,132	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	11,667	1,150
Financing Receivable, Revolving	22,430	18,022
Financing Receivable, Originated in Current Fiscal Year	143,911	185,861
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	173,396	209,069
Financing Receivable, Originated Two Years before Latest Fiscal Year	193,463	128,360
Financing Receivable, Originated Three Years before Latest Fiscal Year	114,618	99,546
Financing Receivable, Originated Four Years before Latest Fiscal Year	61,713	147,366
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	133,641	79,111
Total	843,173	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	487	3,486
Financing Receivable, Originated in Current Fiscal Year	6,182	4,104
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,969	8,916
Financing Receivable, Originated Two Years before Latest Fiscal Year	686	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	748	1,490
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,640	4,437
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,529	3,747
Total	21,241	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	16,577	25,195
Financing Receivable, Revolving	2,330,652	2,216,154
Financing Receivable, Originated in Current Fiscal Year	1,974,013	2,377,152
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,265,523	1,730,682
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,374,203	1,421,598
Financing Receivable, Originated Three Years before Latest Fiscal Year	946,114	604,974
Financing Receivable, Originated Four Years before Latest Fiscal Year	333,593	473,539
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	765,036	545,992
Total	8,989,133	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	1,606	10,272
Financing Receivable, Originated in Current Fiscal Year	6,112	8,589
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,777	42,976
Financing Receivable, Originated Two Years before Latest Fiscal Year	40,287	37,342
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	771
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	479
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,240	67
Total	55,022	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	13,752	5,778
Financing Receivable, Revolving	2,300,611	2,195,160
Financing Receivable, Originated in Current Fiscal Year	1,955,609	2,320,888
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,250,056	1,644,588
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,286,125	1,310,662
Financing Receivable, Originated Three Years before Latest Fiscal Year	916,832	583,503
Financing Receivable, Originated Four Years before Latest Fiscal Year	310,842	453,364
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	755,141	532,845
Total	8,775,216	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	2,825	2,565
Financing Receivable, Revolving	28,435	10,723
Financing Receivable, Originated in Current Fiscal Year	12,275	41,437
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,524	37,329
Financing Receivable, Originated Two Years before Latest Fiscal Year	47,683	56,580
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,034	3,759
Financing Receivable, Originated Four Years before Latest Fiscal Year	22,751	10,915
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,688	4,926
Total	150,391	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	17	6,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	166	5,789
Financing Receivable, Originated Two Years before Latest Fiscal Year	108	17,014
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,248	16,941
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	8,781
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	966	8,154
Total	8,504	62,917
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	38,041	30,774
Financing Receivable, Revolving	85,353	172,335
Financing Receivable, Originated in Current Fiscal Year	964,920	1,366,364
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,058,894	1,140,297
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,121,923	763,933
Financing Receivable, Originated Three Years before Latest Fiscal Year	524,225	288,533
Financing Receivable, Originated Four Years before Latest Fiscal Year	184,259	363,779
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	356,916	247,343
Total	4,296,489	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	57,100	90,235
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	67,285	97,333
Financing Receivable, Originated Two Years before Latest Fiscal Year	74,040	12,339
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,973	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,259	21,882
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,836	8,465
Total	212,491	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	38,041	10,971
Financing Receivable, Revolving	85,353	171,497
Financing Receivable, Originated in Current Fiscal Year	878,373	1,249,644
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	957,478	976,332
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,034,119	720,237
Financing Receivable, Originated Three Years before Latest Fiscal Year	474,770	271,987
Financing Receivable, Originated Four Years before Latest Fiscal Year	178,270	341,658
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	335,168	211,360
Total	3,943,532	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	0	838
Financing Receivable, Originated in Current Fiscal Year	5,474	16,343
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	25,720	13,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,074	30,911
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,259	2,279
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,730	239
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,705	27,209
Total	78,962	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	23,973	10,141
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,412	53,056
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,690	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,222	14,267
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	207	309
Total	61,504	78,220
Total commercial | Real Estate Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	776
Financing Receivable, Revolving	26,560	47,880
Financing Receivable, Originated in Current Fiscal Year	581,265	646,547
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	731,634	739,055
Financing Receivable, Originated Two Years before Latest Fiscal Year	350,881	361,996
Financing Receivable, Originated Three Years before Latest Fiscal Year	109,778	25,277
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,195	2,513
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,556	17,150
Total	1,834,871	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	0	494
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,894	48,283
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,885	42
Financing Receivable, Originated Four Years before Latest Fiscal Year	41	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	30
Total	19,820	49,336
Total commercial | Real Estate Construction | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	776
Financing Receivable, Revolving	26,560	47,880
Financing Receivable, Originated in Current Fiscal Year	581,257	645,925
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	731,505	738,561
Financing Receivable, Originated Two Years before Latest Fiscal Year	328,020	294,910
Financing Receivable, Originated Three Years before Latest Fiscal Year	93,893	25,219
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,154	2,420
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,227	16,768
Total	1,795,616	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	8	135
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	124	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,968	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	87	15
Total	19,187	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	5	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	242	338
Total	247	353
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	38,041	31,549
Financing Receivable, Revolving	111,913	220,215
Financing Receivable, Originated in Current Fiscal Year	1,546,185	2,012,911
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,790,529	1,879,352
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,472,804	1,125,929
Financing Receivable, Originated Three Years before Latest Fiscal Year	634,002	313,810
Financing Receivable, Originated Four Years before Latest Fiscal Year	205,454	366,292
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	370,472	264,493
Total	6,131,360	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	57,100	90,722
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	67,285	97,827
Financing Receivable, Originated Two Years before Latest Fiscal Year	77,934	60,622
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,858	42
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,300	21,882
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,836	8,494
Total	232,312	279,590
Total commercial | Commercial Real Estate | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	38,041	11,746
Financing Receivable, Revolving	111,913	219,377
Financing Receivable, Originated in Current Fiscal Year	1,459,630	1,895,569
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,688,983	1,714,893
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,362,139	1,015,146
Financing Receivable, Originated Three Years before Latest Fiscal Year	568,663	297,205
Financing Receivable, Originated Four Years before Latest Fiscal Year	199,424	344,078
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	348,395	228,127
Total	5,739,148	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	0	838
Financing Receivable, Originated in Current Fiscal Year	5,483	16,479
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	25,844	13,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	23,041	49,714
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,259	2,279
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,730	332
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,792	27,224
Total	98,150	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	23,973	10,141
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,417	53,056
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,690	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,222	14,283
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	448	647
Total	61,751	78,573
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	6,128	12,501
Financing Receivable, Revolving	673,852	737,626
Financing Receivable, Originated in Current Fiscal Year	1,415,110	2,200,487
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,051,672	1,517,417
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,068,927	642,218
Financing Receivable, Originated Three Years before Latest Fiscal Year	477,816	1,019,128
Financing Receivable, Originated Four Years before Latest Fiscal Year	739,650	930,816
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,074,153	1,850,939
Total	8,501,180	8,898,632
Total consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	138	602
Financing Receivable, Revolving	403	1,069
Financing Receivable, Originated in Current Fiscal Year	0	13
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	410
Financing Receivable, Originated Two Years before Latest Fiscal Year	14	356
Financing Receivable, Originated Three Years before Latest Fiscal Year	176	145
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	137
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	756	1,349
Total	1,350	3,480
Total consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,394	10,294
Financing Receivable, Revolving	673,281	734,502
Financing Receivable, Originated in Current Fiscal Year	1,412,786	2,196,822
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,049,262	1,513,865
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,063,738	634,897
Financing Receivable, Originated Three Years before Latest Fiscal Year	472,012	1,011,539
Financing Receivable, Originated Four Years before Latest Fiscal Year	731,942	918,785
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,029,458	1,809,561
Total	8,432,478	8,819,971
Total consumer | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	10	0
Financing Receivable, Revolving	0	1,922
Financing Receivable, Originated in Current Fiscal Year	548	1,200
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	340	689
Financing Receivable, Originated Two Years before Latest Fiscal Year	409	652
Financing Receivable, Originated Three Years before Latest Fiscal Year	341	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	82	179
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	825	1,174
Total	2,546	5,817
Total consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	586	1,605
Financing Receivable, Revolving	167	133
Financing Receivable, Originated in Current Fiscal Year	1,776	2,452
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,070	2,454
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,765	6,313
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,287	7,445
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,627	11,714
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	43,114	38,854
Total	64,806	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	1,406,816	2,187,918
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,043,286	1,493,903
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,053,548	621,983
Financing Receivable, Originated Three Years before Latest Fiscal Year	465,425	1,005,290
Financing Receivable, Originated Four Years before Latest Fiscal Year	729,974	923,105
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,891,844	1,646,124
Total	7,590,895	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	0	355
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	330
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	102
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	126
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	377	537
Total	377	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	1,404,558	2,185,240
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,040,914	1,490,589
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,048,656	615,118
Financing Receivable, Originated Three Years before Latest Fiscal Year	460,120	998,072
Financing Receivable, Originated Four Years before Latest Fiscal Year	722,589	911,797
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,854,629	1,612,971
Total	7,531,466	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	538	1,200
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	340	689
Financing Receivable, Originated Two Years before Latest Fiscal Year	409	652
Financing Receivable, Originated Three Years before Latest Fiscal Year	326	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	82	179
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	679	1,028
Total	2,374	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	1,721	1,478
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,032	2,271
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,483	5,882
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,979	7,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,304	11,003
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	36,160	31,587
Total	56,678	59,337
Total consumer | Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	5,658	12,421
Financing Receivable, Revolving	504,767	572,041
Financing Receivable, Originated in Current Fiscal Year	839	3,022
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,643	13,141
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,078	16,216
Financing Receivable, Originated Three Years before Latest Fiscal Year	10,364	11,952
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,841	6,518
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	73,034	84,364
Total	608,566	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	74	596
Financing Receivable, Revolving	17	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	1	14
Financing Receivable, Originated Three Years before Latest Fiscal Year	110	39
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	4
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	375	804
Total	503	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	4,992	10,224
Financing Receivable, Revolving	504,747	569,389
Financing Receivable, Originated in Current Fiscal Year	773	2,057
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,617	12,968
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,850	15,792
Financing Receivable, Originated Three Years before Latest Fiscal Year	9,952	11,594
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,538	5,803
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	65,577	76,165
Total	600,053	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	10	0
Financing Receivable, Revolving	0	1,922
Financing Receivable, Originated in Current Fiscal Year	10	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	15	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	171	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	582	1,600
Financing Receivable, Revolving	4	100
Financing Receivable, Originated in Current Fiscal Year	56	965
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	25	134
Financing Receivable, Originated Two Years before Latest Fiscal Year	227	410
Financing Receivable, Originated Three Years before Latest Fiscal Year	288	319
Financing Receivable, Originated Four Years before Latest Fiscal Year	303	711
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,936	7,249
Total	7,838	9,888
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	471	81
Financing Receivable, Revolving	169,084	165,585
Financing Receivable, Originated in Current Fiscal Year	7,455	9,547
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,743	10,374
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,300	4,019
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,026	1,886
Financing Receivable, Originated Four Years before Latest Fiscal Year	835	1,192
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	109,275	120,451
Total	301,718	313,054
Total consumer | Other consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	64	5
Financing Receivable, Revolving	387	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	13	11
Financing Receivable, Originated Three Years before Latest Fiscal Year	66	4
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	7
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4	8
Total	470	498
Total consumer | Other consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	402	70
Financing Receivable, Revolving	168,534	165,114
Financing Receivable, Originated in Current Fiscal Year	7,455	9,525
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,730	10,309
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,232	3,987
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,940	1,872
Financing Receivable, Originated Four Years before Latest Fiscal Year	815	1,185
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	109,253	120,425
Total	300,959	312,416
Total consumer | Other consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4	5
Financing Receivable, Revolving	164	33
Financing Receivable, Originated in Current Fiscal Year	0	9
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	12	49
Financing Receivable, Originated Two Years before Latest Fiscal Year	56	21
Financing Receivable, Originated Three Years before Latest Fiscal Year	20	10
Financing Receivable, Originated Four Years before Latest Fiscal Year	20	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	18	18
Total	$ 290	$ 140