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, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	$ 5,183,835	$ 8,655,716
Amortized Cost Basis by Origination Year 2025	7,444,697	4,969,894
Amortized Cost Basis by Origination Year 2024	4,504,574	4,262,716
Amortized Cost Basis by Origination Year 2023	3,365,567	4,744,514
Amortized Cost Basis by Origination Year 2022	4,286,214	3,367,603
Amortized Cost Basis by Origination Year Prior to 2022	5,397,618	2,963,655
Amortized Cost - Revolving Loans	10,934,502	9,794,020
Amortized Cost - Revolving Loans Converted to Term Loans	32,719	21,290
Total Loans	41,149,726	38,779,408
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	2,239,634	3,149,806
Amortized Cost Basis by Origination Year 2026, Current period charge-offs	15
Amortized Cost Basis by Origination Year 2025	2,745,163	2,210,428
Amortized Cost Basis by Origination Year 2024	1,976,059	1,432,712
Amortized Cost Basis by Origination Year 2024, Current period charge-offs	41
Amortized Cost Basis by Origination Year 2023	1,196,855	1,023,493
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	102
Amortized Cost Basis by Origination Year 2022	806,590	487,188
Amortized Cost Basis by Origination Year 2022, Current period charge-offs	71
Amortized Cost Basis by Origination Year Prior to 2022	604,667	354,347
Amortized Cost Basis by Origination Year Prior to 2022, Current period charge-offs	603
Amortized Cost - Revolving Loans	8,349,926	7,597,831
Amortized Cost - Revolving Loans, Current period charge-offs	11,440
Amortized Cost - Revolving Loans Converted to Term Loans	20,868	14,715
Total Loans	17,939,762	16,270,520
Total Loans, Current period charge-offs	12,272
Commercial and Industrial Portfolio [Member] \| Equipment/Accounts Receivable/Inventory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	2,117,193	2,989,029
Amortized Cost Basis by Origination Year 2025	2,538,752	1,901,767
Amortized Cost Basis by Origination Year 2024	1,664,541	1,039,595
Amortized Cost Basis by Origination Year 2023	819,602	929,230
Amortized Cost Basis by Origination Year 2022	747,661	471,193
Amortized Cost Basis by Origination Year Prior to 2022	581,891	321,761
Amortized Cost - Revolving Loans	6,144,832	5,636,442
Amortized Cost - Revolving Loans Converted to Term Loans	20,447	12,186
Total Loans	14,634,919	13,301,203
Commercial and Industrial Portfolio [Member] \| Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	15,722	30,385
Amortized Cost Basis by Origination Year 2025	24,780	22,585
Amortized Cost Basis by Origination Year 2024	17,997	24,980
Amortized Cost Basis by Origination Year 2023	20,683	7,827
Amortized Cost Basis by Origination Year 2022	5,307	3,859
Amortized Cost Basis by Origination Year Prior to 2022	3,841	3,180
Amortized Cost - Revolving Loans	353,108	426,729
Amortized Cost - Revolving Loans Converted to Term Loans		2,258
Total Loans	441,438	521,803
Commercial and Industrial Portfolio [Member] \| NDFIs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	106,719	130,392
Amortized Cost Basis by Origination Year 2025	181,631	286,076
Amortized Cost Basis by Origination Year 2024	293,521	368,137
Amortized Cost Basis by Origination Year 2023	356,570	86,436
Amortized Cost Basis by Origination Year 2022	53,622	12,136
Amortized Cost Basis by Origination Year Prior to 2022	18,935	29,406
Amortized Cost - Revolving Loans	1,832,814	1,517,283
Amortized Cost - Revolving Loans Converted to Term Loans	421	271
Total Loans	2,844,233	2,430,137
Commercial and Industrial Portfolio [Member] \| Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	19,172	17,377
Total Loans	19,172	17,377
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	51,570	46,480
Amortized Cost Basis by Origination Year 2025	38,437	5,639
Amortized Cost Basis by Origination Year 2024	2,989
Amortized Cost Basis by Origination Year 2023		5,801
Amortized Cost Basis by Origination Year 2022	6,433	25,763
Amortized Cost Basis by Origination Year Prior to 2022	46,332	22,632
Amortized Cost - Revolving Loans	511,949	411,922
Total Loans	657,710	518,237
Specialty Lending Portfolio [Member] \| Asset-based Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	51,570	46,480
Amortized Cost Basis by Origination Year 2025	38,437	5,639
Amortized Cost Basis by Origination Year 2024	2,989
Amortized Cost Basis by Origination Year 2023		5,801
Amortized Cost Basis by Origination Year 2022	6,433	25,763
Amortized Cost Basis by Origination Year Prior to 2022	46,332	22,632
Amortized Cost - Revolving Loans	511,949	411,922
Total Loans	657,710	518,237
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	2,419,464	4,579,160
Amortized Cost Basis by Origination Year 2025	3,885,981	2,319,120
Amortized Cost Basis by Origination Year 2024	2,148,652	2,423,763
Amortized Cost Basis by Origination Year 2024, Current period charge-offs	403
Amortized Cost Basis by Origination Year 2023	1,814,537	3,033,066
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	6,145
Amortized Cost Basis by Origination Year 2022	2,835,595	2,091,580
Amortized Cost Basis by Origination Year 2022, Current period charge-offs	4,394
Amortized Cost Basis by Origination Year Prior to 2022	3,263,483	1,737,343
Amortized Cost Basis by Origination Year Prior to 2022, Current period charge-offs	995
Amortized Cost - Revolving Loans	199,113	191,078
Amortized Cost - Revolving Loans Converted to Term Loans	538	1,129
Total Loans	16,567,363	16,376,239
Total Loans, Current period charge-offs	11,937
Commercial Real Estate Portfolio [Member] \| Owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	535,382	1,151,075
Amortized Cost Basis by Origination Year 2025	1,157,525	529,761
Amortized Cost Basis by Origination Year 2024	557,615	599,178
Amortized Cost Basis by Origination Year 2023	505,468	955,385
Amortized Cost Basis by Origination Year 2022	885,425	775,378
Amortized Cost Basis by Origination Year Prior to 2022	1,288,592	724,775
Amortized Cost - Revolving Loans	46,994	39,505
Amortized Cost - Revolving Loans Converted to Term Loans	538
Total Loans	4,977,539	4,775,057
Commercial Real Estate Portfolio [Member] \| Non-owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	960,336	1,664,285
Amortized Cost Basis by Origination Year 2025	1,502,277	656,031
Amortized Cost Basis by Origination Year 2024	739,683	847,458
Amortized Cost Basis by Origination Year 2023	548,768	1,018,831
Amortized Cost Basis by Origination Year 2022	997,794	769,616
Amortized Cost Basis by Origination Year Prior to 2022	1,268,408	736,502
Amortized Cost - Revolving Loans	39,333	41,093
Amortized Cost - Revolving Loans Converted to Term Loans		1,054
Total Loans	6,056,599	5,734,870
Commercial Real Estate Portfolio [Member] \| Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	111,106	258,796
Amortized Cost Basis by Origination Year 2025	264,017	74,542
Amortized Cost Basis by Origination Year 2024	68,862	85,814
Amortized Cost Basis by Origination Year 2023	63,823	131,009
Amortized Cost Basis by Origination Year 2022	96,724	83,613
Amortized Cost Basis by Origination Year Prior to 2022	214,606	163,318
Amortized Cost - Revolving Loans	62,025	66,403
Amortized Cost - Revolving Loans Converted to Term Loans		75
Total Loans	881,163	863,570
Commercial Real Estate Portfolio [Member] \| 5+ Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	255,240	329,902
Amortized Cost Basis by Origination Year 2025	95,985	179,107
Amortized Cost Basis by Origination Year 2024	194,816	171,945
Amortized Cost Basis by Origination Year 2023	132,012	554,125
Amortized Cost Basis by Origination Year 2022	567,165	434,660
Amortized Cost Basis by Origination Year Prior to 2022	473,161	96,475
Amortized Cost - Revolving Loans	6,289	10,441
Total Loans	1,724,668	1,776,655
Commercial Real Estate Portfolio [Member] \| 1-4 Family Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	51,421	75,849
Amortized Cost Basis by Origination Year 2025	40,213	11,564
Amortized Cost Basis by Origination Year 2024	25,236	240
Amortized Cost Basis by Origination Year 2023		520
Amortized Cost - Revolving Loans		1,301
Total Loans	116,870	89,474
Commercial Real Estate Portfolio [Member] \| General Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	505,979	1,099,253
Amortized Cost Basis by Origination Year 2025	825,964	868,115
Amortized Cost Basis by Origination Year 2024	562,440	719,128
Amortized Cost Basis by Origination Year 2023	564,466	373,196
Amortized Cost Basis by Origination Year 2022	288,487	28,313
Amortized Cost Basis by Origination Year Prior to 2022	18,716	16,273
Amortized Cost - Revolving Loans	44,472	32,335
Total Loans	2,810,524	3,136,613
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	392,061	676,539
Amortized Cost Basis by Origination Year 2025	591,478	399,776
Amortized Cost Basis by Origination Year 2024	348,757	384,373
Amortized Cost Basis by Origination Year 2024, Current period charge-offs	29
Amortized Cost Basis by Origination Year 2023	336,834	662,168
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	371
Amortized Cost Basis by Origination Year 2022	621,297	753,733
Amortized Cost Basis by Origination Year 2022, Current period charge-offs	167
Amortized Cost Basis by Origination Year Prior to 2022	1,468,606	844,402
Amortized Cost Basis by Origination Year Prior to 2022, Current period charge-offs	327
Amortized Cost - Revolving Loans	750,855	710,133
Amortized Cost - Revolving Loans, Current period charge-offs	5
Amortized Cost - Revolving Loans Converted to Term Loans	4,329	5,344
Total Loans	4,514,217	4,436,468
Total Loans, Current period charge-offs	899
Consumer Real Estate Portfolio [Member] \| HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	591	2,748
Amortized Cost Basis by Origination Year 2025	1,367	399
Amortized Cost Basis by Origination Year 2024	478	756
Amortized Cost Basis by Origination Year 2023	2,128	2,075
Amortized Cost Basis by Origination Year 2022	2,561	577
Amortized Cost Basis by Origination Year Prior to 2022	8,528	7,784
Amortized Cost - Revolving Loans	749,509	698,503
Amortized Cost - Revolving Loans Converted to Term Loans	2,996	5,331
Total Loans	768,158	718,173
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 2026	381,589	653,333
Amortized Cost Basis by Origination Year 2025	574,413	368,156
Amortized Cost Basis by Origination Year 2024	323,306	364,405
Amortized Cost Basis by Origination Year 2023	317,289	631,555
Amortized Cost Basis by Origination Year 2022	593,506	735,751
Amortized Cost Basis by Origination Year Prior to 2022	1,439,016	830,570
Amortized Cost - Revolving Loans	855	6,864
Amortized Cost - Revolving Loans Converted to Term Loans	1,333	13
Total Loans	3,631,307	3,590,647
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 2026	9,881	20,458
Amortized Cost Basis by Origination Year 2025	15,698	31,221
Amortized Cost Basis by Origination Year 2024	24,973	19,212
Amortized Cost Basis by Origination Year 2023	17,417	28,538
Amortized Cost Basis by Origination Year 2022	25,230	17,405
Amortized Cost Basis by Origination Year Prior to 2022	21,062	6,048
Amortized Cost - Revolving Loans	491	4,766
Total Loans	114,752	127,648
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	11,823	22,571
Amortized Cost Basis by Origination Year 2025	16,990	18,523
Amortized Cost Basis by Origination Year 2025, Current period charge-offs	19
Amortized Cost Basis by Origination Year 2024	12,877	13,280
Amortized Cost Basis by Origination Year 2024, Current period charge-offs	47
Amortized Cost Basis by Origination Year 2023	9,470	11,273
Amortized Cost Basis by Origination Year 2023, Current period charge-offs	56
Amortized Cost Basis by Origination Year 2022	9,150	1,995
Amortized Cost Basis by Origination Year 2022, Current period charge-offs	103
Amortized Cost Basis by Origination Year Prior to 2022	2,853	2,046
Amortized Cost Basis by Origination Year Prior to 2022, Current period charge-offs	12
Amortized Cost - Revolving Loans	199,050	169,021
Amortized Cost - Revolving Loans, Current period charge-offs	1,820
Amortized Cost - Revolving Loans Converted to Term Loans	6,984	102
Total Loans	269,197	238,811
Total Loans, Current period charge-offs	2,057
Consumer Portfolio [Member] \| Revolving Line [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026		1,485
Amortized Cost Basis by Origination Year 2025	484	34
Amortized Cost Basis by Origination Year 2024	34	23
Amortized Cost Basis by Origination Year 2023	96	49
Amortized Cost Basis by Origination Year 2022	442	24
Amortized Cost Basis by Origination Year Prior to 2022	707	526
Amortized Cost - Revolving Loans	160,755	160,454
Amortized Cost - Revolving Loans Converted to Term Loans	6,984	102
Total Loans	169,502	162,697
Consumer Portfolio [Member] \| Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	6,530	8,179
Amortized Cost Basis by Origination Year 2025	6,380	7,292
Amortized Cost Basis by Origination Year 2024	5,421	9,743
Amortized Cost Basis by Origination Year 2023	6,891	5,307
Amortized Cost Basis by Origination Year 2022	3,407	1,118
Amortized Cost Basis by Origination Year Prior to 2022	608	248
Total Loans	29,237	31,887
Consumer Portfolio [Member] \| Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	5,293	12,907
Amortized Cost Basis by Origination Year 2025	10,126	11,197
Amortized Cost Basis by Origination Year 2024	7,422	3,514
Amortized Cost Basis by Origination Year 2023	2,483	5,917
Amortized Cost Basis by Origination Year 2022	5,301	853
Amortized Cost Basis by Origination Year Prior to 2022	1,538	1,272
Amortized Cost - Revolving Loans	38,295	8,567
Total Loans	70,458	44,227
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	701,232	700,733
Amortized Cost - Revolving Loans, Current period charge-offs	12,202
Total Loans	701,232	700,733
Total Loans, Current period charge-offs	12,202
Credit Cards Portfolio [Member] \| Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	348,172	347,749
Total Loans	348,172	347,749
Credit Cards Portfolio [Member] \| Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	353,060	352,984
Total Loans	353,060	352,984
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	69,283	181,160
Amortized Cost Basis by Origination Year 2025	166,648	16,408
Amortized Cost Basis by Origination Year 2024	15,240	8,588
Amortized Cost Basis by Origination Year 2023	7,871	8,713
Amortized Cost Basis by Origination Year 2022	7,149	7,344
Amortized Cost Basis by Origination Year Prior to 2022	11,677	2,885
Amortized Cost - Revolving Loans	222,377	13,302
Total Loans	500,245	238,400
Leases and Other Portfolio [Member] \| Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year Prior to 2022	933	1,214
Total Loans	933	1,214
Leases and Other Portfolio [Member] \| Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2026	69,283	181,160
Amortized Cost Basis by Origination Year 2025	166,648	16,408
Amortized Cost Basis by Origination Year 2024	15,240	8,588
Amortized Cost Basis by Origination Year 2023	7,871	8,713
Amortized Cost Basis by Origination Year 2022	7,149	7,344
Amortized Cost Basis by Origination Year Prior to 2022	10,744	1,671
Amortized Cost - Revolving Loans	222,377	13,302
Total Loans	$ 499,312	$ 237,186

Financing receivable allowance for credit losses write offs originated current fiscal year.

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Financing receivable allowance for credit losses write offs originated five or more years before latest fiscal year.

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No definition available.

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Financing receivable allowance for credit losses write offs originated four years before latest fiscal year.

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Financing receivable allowance for credit losses write offs originated in fiscal year before latest fiscal year.

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Financing receivable allowance for credit losses write offs originated three years before latest fiscal year.

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Financing receivable allowance for credit losses write offs originated two years before latest fiscal year.

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Financing receivable allowances for credit losses write offs.

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Financing receivable revolving allowance for credit losses write offs.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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- Definition

Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn.

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- Definition

Amortized cost of revolving financing receivable converted to term loan.

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- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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