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Loans and Allowance for Credit Losses - Age Analysis of Past Due Loans by Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	$ 8,968,761	$ 7,642,143
Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,357,649	1,297,655
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,543,349	1,211,706
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	597,735	513,101
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	2,416,876	2,194,669
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,053,152	2,425,012
Time and demand loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,187,300	1,023,824
Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,187,300	1,023,824
Commercial credit cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	12,906	13,920
Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	12,906	13,920
Senior Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,739,107	1,547,192
Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,739,107	1,547,192
Junior Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	677,769	647,477
Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	677,769	647,477
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	551,142	431,151
Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	551,142	431,151
Nonowner Occupied Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,772,785	1,510,347
Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,772,785	1,510,347
Owner Occupied Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	729,225	483,514
Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	729,225	483,514
Automobile Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,277,969	1,210,451
Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,277,969	1,210,451
Consumer Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	10,291	10,657
Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	10,291	10,657
Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	69,389	76,547
Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	69,389	76,547
Equipment Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	232,944	79,674
Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	232,944	79,674
Time and Demand Loans Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	110,199	94,288
Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	110,199	94,288
Construction Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	56,102	117,662
Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	56,102	117,662
Construction Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	541,633	395,439
Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	541,633	395,439
Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	16,958	15,896
Financial Asset, 30 to 59 Days Past Due [Member] | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,613	3,268
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,206	1,233
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	502
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	6,982	3,023
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,157	7,870
Financial Asset, 30 to 59 Days Past Due [Member] | Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	565	1,121
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	7	27
Financial Asset, 30 to 59 Days Past Due [Member] | Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,130	1,547
Financial Asset, 30 to 59 Days Past Due [Member] | Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	2,852	1,476
Financial Asset, 30 to 59 Days Past Due [Member] | Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	202
Financial Asset, 30 to 59 Days Past Due [Member] | Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	2,303	7,547
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,854	121
Financial Asset, 30 to 59 Days Past Due [Member] | Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,115	2,694
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	39	53
Financial Asset, 30 to 59 Days Past Due [Member] | Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	459	521
Financial Asset, 30 to 59 Days Past Due [Member] | Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	600	0
Financial Asset, 30 to 59 Days Past Due [Member] | Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	34	85
Financial Asset, 30 to 59 Days Past Due [Member] | Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	502
Financial Asset, 30 to 59 Days Past Due [Member] | Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,158	2,053
Financial Asset, 60 to 89 Days Past Due [Member] | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	878	571
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	745	279
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,535	1,178
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	25
Financial Asset, 60 to 89 Days Past Due [Member] | Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	691	270
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	54	9
Financial Asset, 60 to 89 Days Past Due [Member] | Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	940	771
Financial Asset, 60 to 89 Days Past Due [Member] | Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	595	407
Financial Asset, 60 to 89 Days Past Due [Member] | Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	25
Financial Asset, 60 to 89 Days Past Due [Member] | Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	612	368
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	71	29
Financial Asset, 60 to 89 Days Past Due [Member] | Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	195	174
Financial Asset, 60 to 89 Days Past Due [Member] | Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	9,436	1,991
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	678	732
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,187	355
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,062	811
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,509	93
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,187	352
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	171	214
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	891	597
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,509	92
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	1
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	151	295
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	5
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	527	432
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	3
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Nonaccrual Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	39,472	29,045
Nonaccrual Commercial Loans [Member] | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	166	449
Nonaccrual Commercial Loans [Member] | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	10,060	2,374
Nonaccrual Commercial Loans [Member] | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,288	0
Nonaccrual Commercial Loans [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	8,573	5,683
Nonaccrual Commercial Loans [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	17,385	20,539
Nonaccrual Commercial Loans [Member] | Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	9,218	2,374
Nonaccrual Commercial Loans [Member] | Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Nonaccrual Commercial Loans [Member] | Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,443	3,369
Nonaccrual Commercial Loans [Member] | Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,130	2,314
Nonaccrual Commercial Loans [Member] | Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	55	0
Nonaccrual Commercial Loans [Member] | Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	14,282	19,575
Nonaccrual Commercial Loans [Member] | Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,048	964
Nonaccrual Commercial Loans [Member] | Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	164	361
Nonaccrual Commercial Loans [Member] | Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Nonaccrual Commercial Loans [Member] | Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	2	88
Nonaccrual Commercial Loans [Member] | Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	842	0
Nonaccrual Commercial Loans [Member] | Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Nonaccrual Commercial Loans [Member] | Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	0
Nonaccrual Commercial Loans [Member] | Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,288	0
Financial Asset, Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	69,024	48,985
Financial Asset, Past Due | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	6,335	5,020
Financial Asset, Past Due | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	16,198	4,241
Financial Asset, Past Due | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,288	502
Financial Asset, Past Due | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	18,152	10,695
Financial Asset, Past Due | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	25,051	28,527
Financial Asset, Past Due | Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	14,661	4,117
Financial Asset, Past Due | Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	61	36
Financial Asset, Past Due | Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	9,684	5,901
Financial Asset, Past Due | Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	8,468	4,794
Financial Asset, Past Due | Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	55	202
Financial Asset, Past Due | Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	20,094	27,214
Financial Asset, Past Due | Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	4,902	1,111
Financial Asset, Past Due | Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	5,042	3,718
Financial Asset, Past Due | Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	110	87
Financial Asset, Past Due | Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,183	1,215
Financial Asset, Past Due | Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,442	0
Financial Asset, Past Due | Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	34	88
Financial Asset, Past Due | Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	0	502
Financial Asset, Past Due | Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,288	0
Financial Asset, Not Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	8,899,737	7,593,158
Financial Asset, Not Past Due | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,351,314	1,292,635
Financial Asset, Not Past Due | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,527,151	1,207,465
Financial Asset, Not Past Due | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	594,447	512,599
Financial Asset, Not Past Due | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	2,398,724	2,183,974
Financial Asset, Not Past Due | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	3,028,101	2,396,485
Financial Asset, Not Past Due | Time and demand loans | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,172,639	1,019,707
Financial Asset, Not Past Due | Commercial credit cards | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	12,845	13,884
Financial Asset, Not Past Due | Senior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,729,423	1,541,291
Financial Asset, Not Past Due | Junior Lien | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	669,301	642,683
Financial Asset, Not Past Due | Multifamily | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	551,087	430,949
Financial Asset, Not Past Due | Nonowner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,752,691	1,483,133
Financial Asset, Not Past Due | Owner Occupied Commercial Real Estate | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	724,323	482,403
Financial Asset, Not Past Due | Automobile Loan | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	1,272,927	1,206,733
Financial Asset, Not Past Due | Consumer Credit Cards | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	10,181	10,570
Financial Asset, Not Past Due | Other consumer loans | Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	68,206	75,332
Financial Asset, Not Past Due | Equipment Finance | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	231,502	79,674
Financial Asset, Not Past Due | Time and Demand Loans Other | Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	110,165	94,200
Financial Asset, Not Past Due | Construction Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	56,102	117,160
Financial Asset, Not Past Due | Construction Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss	$ 538,345	$ 395,439

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