Loans and Allowance for Credit Losses - Summary of Amortized Cost Balance of Each of Loan Classes Disaggregated by Collateral Type and Origination Year (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	$ 1,710,949	$ 3,930,419
Amortized Cost Basis by Origination Year 2023	3,649,486	5,252,010
Amortized Cost Basis by Origination Year 2022	5,100,155	4,042,524
Amortized Cost Basis by Origination Year 2021	3,584,116	2,032,891
Amortized Cost Basis by Origination Year 2020	1,896,576	846,589
Amortized Cost Basis by Origination Year Prior to 2020	1,297,487	711,630
Amortized Cost - Revolving Loans	6,956,907	6,345,327
Amortized Cost - Revolving Loans Converted to Term Loans	1,786	11,094
Total Loans	24,197,462	23,172,484
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	793,508	1,801,235
Amortized Cost Basis by Origination Year 2023	1,553,154	1,492,449
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	598
Amortized Cost Basis by Origination Year 2022	1,214,250	1,127,517
Amortized Cost Basis by Origination Year 2022, Current period charge-offs	36
Amortized Cost Basis by Origination Year 2021	907,716	413,196
Amortized Cost Basis by Origination Year 2021, Current period charge-offs	22
Amortized Cost Basis by Origination Year 2020	357,568	203,304
Amortized Cost Basis by Origination Year 2020, Current period charge-offs	11
Amortized Cost Basis by Origination Year Prior to 2020	228,231	97,369
Amortized Cost Basis by Origination Year Prior to 2020, Current period charge-offs	327
Amortized Cost - Revolving Loans	5,178,519	4,788,523
Amortized Cost - Revolving Loans Converted to Term Loans	514	6,336
Total Loans	10,233,460	9,929,929
Total Loans, Current period charge-offs	994
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	782,641	1,787,301
Amortized Cost Basis by Origination Year 2023	1,546,824	1,486,609
Amortized Cost Basis by Origination Year 2022	1,209,935	1,123,732
Amortized Cost Basis by Origination Year 2021	904,950	412,276
Amortized Cost Basis by Origination Year 2020	356,949	202,827
Amortized Cost Basis by Origination Year Prior to 2020	227,748	97,130
Amortized Cost - Revolving Loans	5,044,452	4,615,872
Amortized Cost - Revolving Loans Converted to Term Loans	514	6,336
Total Loans	10,074,013	9,732,083
Commercial and Industrial Portfolio [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	10,867	13,934
Amortized Cost Basis by Origination Year 2023	6,330	5,840
Amortized Cost Basis by Origination Year 2022	4,315	3,785
Amortized Cost Basis by Origination Year 2021	2,766	920
Amortized Cost Basis by Origination Year 2020	619	477
Amortized Cost Basis by Origination Year Prior to 2020	483	239
Amortized Cost - Revolving Loans	125,743	169,173
Total Loans	151,123	194,368
Commercial and Industrial Portfolio [Member] | Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	8,324	3,478
Total Loans	8,324	3,478
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	5,612	13,938
Amortized Cost Basis by Origination Year 2023		16,103
Amortized Cost Basis by Origination Year 2022	9,563	35,466
Amortized Cost Basis by Origination Year 2021	33,655	32,229
Amortized Cost Basis by Origination Year 2020	31,090
Amortized Cost - Revolving Loans	444,322	401,050
Total Loans	524,242	498,786
Specialty Lending Portfolio [Member] | Asset-based Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	5,612	13,938
Amortized Cost Basis by Origination Year 2023		16,103
Amortized Cost Basis by Origination Year 2022	9,563	35,466
Amortized Cost Basis by Origination Year 2021	33,655	32,229
Amortized Cost Basis by Origination Year 2020	31,090
Amortized Cost - Revolving Loans	444,322	401,050
Total Loans	524,242	498,786
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	702,733	1,566,773
Amortized Cost Basis by Origination Year 2023	1,592,645	3,021,395
Amortized Cost Basis by Origination Year 2022	3,225,993	2,143,657
Amortized Cost Basis by Origination Year 2021	1,933,384	1,014,490
Amortized Cost Basis by Origination Year 2021, Current period charge-offs	236
Amortized Cost Basis by Origination Year 2020	960,627	479,175
Amortized Cost Basis by Origination Year Prior to 2020	755,509	425,864
Amortized Cost Basis by Origination Year Prior to 2020, Current period charge-offs	14
Amortized Cost - Revolving Loans	278,714	239,178
Amortized Cost - Revolving Loans Converted to Term Loans	8	3,394
Total Loans	9,449,613	8,893,926
Total Loans, Current period charge-offs	250
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	105,871	276,284
Amortized Cost Basis by Origination Year 2023	270,193	629,514
Amortized Cost Basis by Origination Year 2022	614,370	499,020
Amortized Cost Basis by Origination Year 2021	460,640	335,133
Amortized Cost Basis by Origination Year 2020	315,017	152,539
Amortized Cost Basis by Origination Year Prior to 2020	321,826	215,373
Amortized Cost - Revolving Loans	50,747	30,842
Total Loans	2,138,664	2,138,705
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	312,363	556,369
Amortized Cost Basis by Origination Year 2023	621,502	901,614
Amortized Cost Basis by Origination Year 2022	933,021	849,496
Amortized Cost Basis by Origination Year 2021	762,453	449,547
Amortized Cost Basis by Origination Year 2020	422,244	293,531
Amortized Cost Basis by Origination Year Prior to 2020	385,016	185,679
Amortized Cost - Revolving Loans	32,140	36,313
Total Loans	3,468,739	3,272,549
Commercial Real Estate Portfolio [Member] | Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	33,930	75,418
Amortized Cost Basis by Origination Year 2023	49,749	71,087
Amortized Cost Basis by Origination Year 2022	66,826	39,128
Amortized Cost Basis by Origination Year 2021	37,507	195,750
Amortized Cost Basis by Origination Year 2020	190,011	15,608
Amortized Cost Basis by Origination Year Prior to 2020	27,872	19,700
Amortized Cost - Revolving Loans	103,891	89,291
Amortized Cost - Revolving Loans Converted to Term Loans	8
Total Loans	509,794	505,982
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	72,818	34,714
Amortized Cost Basis by Origination Year 2023	34,695	27,668
Amortized Cost Basis by Origination Year 2022	135,950	240,724
Amortized Cost Basis by Origination Year 2021	210,771	29,840
Amortized Cost Basis by Origination Year 2020	29,219	16,861
Amortized Cost Basis by Origination Year Prior to 2020	20,205	4,982
Amortized Cost - Revolving Loans	8,257	9,274
Total Loans	511,915	364,063
Commercial Real Estate Portfolio [Member] | 1-4 Family Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	16,957	49,327
Amortized Cost Basis by Origination Year 2023	25,950	51,360
Amortized Cost Basis by Origination Year 2022	62,218
Amortized Cost - Revolving Loans	2,640	3,286
Amortized Cost - Revolving Loans Converted to Term Loans		3,394
Total Loans	107,765	107,367
Commercial Real Estate Portfolio [Member] | General Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	160,794	574,661
Amortized Cost Basis by Origination Year 2023	590,556	1,340,152
Amortized Cost Basis by Origination Year 2022	1,413,608	515,289
Amortized Cost Basis by Origination Year 2021	462,013	4,220
Amortized Cost Basis by Origination Year 2020	4,136	636
Amortized Cost Basis by Origination Year Prior to 2020	590	130
Amortized Cost - Revolving Loans	81,039	70,172
Total Loans	2,712,736	2,505,260
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	185,224	431,579
Amortized Cost Basis by Origination Year 2023	400,720	597,994
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	1
Amortized Cost Basis by Origination Year 2022	570,545	688,869
Amortized Cost Basis by Origination Year 2021	665,960	553,283
Amortized Cost Basis by Origination Year 2020	532,112	160,427
Amortized Cost Basis by Origination Year Prior to 2020	299,119	171,924
Amortized Cost - Revolving Loans	366,645	355,192
Amortized Cost - Revolving Loans, Current period charge-offs	175
Amortized Cost - Revolving Loans Converted to Term Loans	963	1,364
Total Loans	3,021,288	2,960,632
Total Loans, Current period charge-offs	176
Consumer Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024		150
Amortized Cost Basis by Origination Year 2023		650
Amortized Cost Basis by Origination Year 2022	555
Amortized Cost Basis by Origination Year 2021	120	497
Amortized Cost Basis by Origination Year 2020	305	82
Amortized Cost Basis by Origination Year Prior to 2020	5,189	4,958
Amortized Cost - Revolving Loans	366,560	355,105
Amortized Cost - Revolving Loans Converted to Term Loans	963	1,364
Total Loans	373,692	362,806
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	176,648	419,312
Amortized Cost Basis by Origination Year 2023	389,382	585,401
Amortized Cost Basis by Origination Year 2022	558,875	682,008
Amortized Cost Basis by Origination Year 2021	659,467	548,859
Amortized Cost Basis by Origination Year 2020	528,452	158,228
Amortized Cost Basis by Origination Year Prior to 2020	290,962	165,197
Amortized Cost - Revolving Loans		2
Total Loans	2,603,786	2,559,007
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	8,576	12,117
Amortized Cost Basis by Origination Year 2023	11,338	11,943
Amortized Cost Basis by Origination Year 2022	11,115	6,861
Amortized Cost Basis by Origination Year 2021	6,373	3,927
Amortized Cost Basis by Origination Year 2020	3,355	2,117
Amortized Cost Basis by Origination Year Prior to 2020	2,968	1,769
Amortized Cost - Revolving Loans	85	85
Total Loans	43,810	38,819
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	7,129	16,410
Amortized Cost Basis by Origination Year 2023	12,897	28,160
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	25
Amortized Cost Basis by Origination Year 2022	20,314	30,047
Amortized Cost Basis by Origination Year 2022, Current period charge-offs	38
Amortized Cost Basis by Origination Year 2021	28,686	2,744
Amortized Cost Basis by Origination Year 2020	1,799	1,453
Amortized Cost Basis by Origination Year Prior to 2020	1,465	1,401
Amortized Cost Basis by Origination Year Prior to 2020, Current period charge-offs	2
Amortized Cost - Revolving Loans	86,577	83,076
Amortized Cost - Revolving Loans, Current period charge-offs	604
Amortized Cost - Revolving Loans Converted to Term Loans	301
Total Loans	159,168	163,291
Total Loans, Current period charge-offs	669
Consumer Portfolio [Member] | Revolving Line [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	35	48
Amortized Cost - Revolving Loans	79,465	56,272
Amortized Cost - Revolving Loans Converted to Term Loans	301
Total Loans	79,801	56,320
Consumer Portfolio [Member] | Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	5,012	11,509
Amortized Cost Basis by Origination Year 2023	9,386	6,013
Amortized Cost Basis by Origination Year 2022	4,744	3,922
Amortized Cost Basis by Origination Year 2021	2,831	2,170
Amortized Cost Basis by Origination Year 2020	1,345	1,088
Amortized Cost Basis by Origination Year Prior to 2020	593	158
Total Loans	23,911	24,860
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	2,082	4,853
Amortized Cost Basis by Origination Year 2023	3,511	22,147
Amortized Cost Basis by Origination Year 2022	15,570	26,125
Amortized Cost Basis by Origination Year 2021	25,855	574
Amortized Cost Basis by Origination Year 2020	454	365
Amortized Cost Basis by Origination Year Prior to 2020	872	1,243
Amortized Cost - Revolving Loans	7,112	26,804
Total Loans	55,456	82,111
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	569,268	423,956
Amortized Cost - Revolving Loans, Current period charge-offs	7,246
Total Loans	569,268	423,956
Total Loans, Current period charge-offs	7,246
Credit Cards Portfolio [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	317,953	197,095
Total Loans	317,953	197,095
Credit Cards Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	251,315	226,861
Total Loans	251,315	226,861
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	16,743	100,484
Amortized Cost Basis by Origination Year 2023	90,070	95,909
Amortized Cost Basis by Origination Year 2022	59,490	16,968
Amortized Cost Basis by Origination Year 2021	14,715	16,949
Amortized Cost Basis by Origination Year 2020	13,380	2,230
Amortized Cost Basis by Origination Year Prior to 2020	13,163	15,072
Amortized Cost - Revolving Loans	32,862	54,352
Total Loans	240,423	301,964
Leases and Other Portfolio [Member] | Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020		610
Amortized Cost Basis by Origination Year Prior to 2020	1,681	1,106
Total Loans	1,681	1,716
Leases and Other Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2024	16,743	100,484
Amortized Cost Basis by Origination Year 2023	90,070	95,909
Amortized Cost Basis by Origination Year 2022	59,490	16,968
Amortized Cost Basis by Origination Year 2021	14,715	16,949
Amortized Cost Basis by Origination Year 2020	13,380	1,620
Amortized Cost Basis by Origination Year Prior to 2020	11,482	13,966
Amortized Cost - Revolving Loans	32,862	54,352
Total Loans	$ 238,742	$ 300,248