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	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	$ 4,019,184	$ 5,779,727
Amortized Cost Basis by Origination Year 2021	4,964,921	3,516,428
Amortized Cost Basis by Origination Year 2020	2,723,868	1,605,604
Amortized Cost Basis by Origination Year 2019	1,192,412	633,731
Amortized Cost Basis by Origination Year 2018	454,912	435,695
Amortized Cost Basis by Origination Year Prior to 2018	787,051	705,980
Amortized Cost - Revolving Loans	5,733,070	4,489,817
Amortized Cost - Revolving Loans Converted to Term Loans	8,155	3,889
Total Loans	19,883,573	17,170,871
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	1,688,668	2,412,187
Amortized Cost Basis by Origination Year 2021	1,700,520	951,267
Amortized Cost Basis by Origination Year 2020	689,559	359,656
Amortized Cost Basis by Origination Year 2019	283,992	151,532
Amortized Cost Basis by Origination Year 2018	103,519	115,915
Amortized Cost Basis by Origination Year Prior to 2018	95,065	133,043
Amortized Cost - Revolving Loans	4,221,627	3,134,273
Amortized Cost - Revolving Loans Converted to Term Loans	6,164	247
Total Loans	8,789,114	7,258,120
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	1,680,546	2,400,110
Amortized Cost Basis by Origination Year 2021	1,695,190	945,383
Amortized Cost Basis by Origination Year 2020	685,162	356,348
Amortized Cost Basis by Origination Year 2019	281,578	150,892
Amortized Cost Basis by Origination Year 2018	103,022	115,571
Amortized Cost Basis by Origination Year Prior to 2018	94,427	131,900
Amortized Cost - Revolving Loans	4,056,424	2,984,740
Amortized Cost - Revolving Loans Converted to Term Loans	6,094	247
Total Loans	8,602,443	7,085,191
Commercial and Industrial Portfolio [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	8,122	12,077
Amortized Cost Basis by Origination Year 2021	5,330	5,884
Amortized Cost Basis by Origination Year 2020	4,397	3,308
Amortized Cost Basis by Origination Year 2019	2,414	640
Amortized Cost Basis by Origination Year 2018	497	344
Amortized Cost Basis by Origination Year Prior to 2018	638	1,143
Amortized Cost - Revolving Loans	160,658	130,946
Amortized Cost - Revolving Loans Converted to Term Loans	70
Total Loans	182,126	154,342
Commercial and Industrial Portfolio [Member] | Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	4,545	18,587
Total Loans	4,545	18,587
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	18,623	34,552
Amortized Cost Basis by Origination Year 2021	56,139	49,373
Amortized Cost Basis by Origination Year 2020	40,785
Amortized Cost - Revolving Loans	432,576	438,437
Total Loans	548,123	522,362
Specialty Lending Portfolio [Member] | Asset-based Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	18,623	34,552
Amortized Cost Basis by Origination Year 2021	56,139	49,373
Amortized Cost Basis by Origination Year 2020	40,785
Amortized Cost - Revolving Loans	432,576	331,282
Total Loans	548,123	415,207
Specialty Lending Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans		107,155
Total Loans		107,155
Commercial Real Estate Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	1,689,488	2,350,910
Amortized Cost Basis by Origination Year 2021	2,369,675	1,742,749
Amortized Cost Basis by Origination Year 2020	1,327,751	975,704
Amortized Cost Basis by Origination Year 2019	692,311	396,747
Amortized Cost Basis by Origination Year 2018	280,960	247,282
Amortized Cost Basis by Origination Year Prior to 2018	539,515	459,957
Amortized Cost - Revolving Loans	204,291	93,196
Amortized Cost - Revolving Loans Converted to Term Loans	226	999
Total Loans	7,104,217	6,267,544
Commercial Real Estate Portfolio Segment | Owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	490,801	680,135
Amortized Cost Basis by Origination Year 2021	602,062	519,448
Amortized Cost Basis by Origination Year 2020	405,019	226,631
Amortized Cost Basis by Origination Year 2019	186,294	177,576
Amortized Cost Basis by Origination Year 2018	145,177	91,539
Amortized Cost Basis by Origination Year Prior to 2018	201,132	159,482
Amortized Cost - Revolving Loans	92,172	11,727
Total Loans	2,122,657	1,866,538
Commercial Real Estate Portfolio Segment | Non-owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	715,475	1,058,025
Amortized Cost Basis by Origination Year 2021	917,810	689,167
Amortized Cost Basis by Origination Year 2020	569,503	591,886
Amortized Cost Basis by Origination Year 2019	417,488	162,491
Amortized Cost Basis by Origination Year 2018	117,616	135,100
Amortized Cost Basis by Origination Year Prior to 2018	305,540	258,541
Amortized Cost - Revolving Loans	10,517	10,969
Total Loans	3,053,949	2,906,179
Commercial Real Estate Portfolio Segment | Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	83,777	61,505
Amortized Cost Basis by Origination Year 2021	49,189	273,624
Amortized Cost Basis by Origination Year 2020	229,799	34,145
Amortized Cost Basis by Origination Year 2019	24,407	16,969
Amortized Cost Basis by Origination Year 2018	16,516	19,929
Amortized Cost Basis by Origination Year Prior to 2018	26,306	34,858
Amortized Cost - Revolving Loans	86,372	38,239
Amortized Cost - Revolving Loans Converted to Term Loans	226	999
Total Loans	516,592	480,268
Commercial Real Estate Portfolio Segment | 5+ Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	33,595	58,268
Amortized Cost Basis by Origination Year 2021	30,206	95,024
Amortized Cost Basis by Origination Year 2020	71,213	41,426
Amortized Cost Basis by Origination Year 2019	19,100	1,206
Amortized Cost Basis by Origination Year 2018	1,651	511
Amortized Cost Basis by Origination Year Prior to 2018	6,126	6,820
Amortized Cost - Revolving Loans	3,526	2,057
Total Loans	165,417	205,312
Commercial Real Estate Portfolio Segment | 1-4 Family Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	45,302	53,004
Amortized Cost Basis by Origination Year 2021	33,332	4,933
Amortized Cost Basis by Origination Year 2020		17,333
Amortized Cost - Revolving Loans	1,226	985
Total Loans	79,860	76,255
Commercial Real Estate Portfolio Segment | General Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	320,538	439,973
Amortized Cost Basis by Origination Year 2021	737,076	160,553
Amortized Cost Basis by Origination Year 2020	52,217	64,283
Amortized Cost Basis by Origination Year 2019	45,022	38,505
Amortized Cost Basis by Origination Year 2018		203
Amortized Cost Basis by Origination Year Prior to 2018	411	256
Amortized Cost - Revolving Loans	10,478	29,219
Total Loans	1,165,742	732,992
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	525,810	839,875
Amortized Cost Basis by Origination Year 2021	767,725	719,110
Amortized Cost Basis by Origination Year 2020	631,429	203,855
Amortized Cost Basis by Origination Year 2019	178,913	60,458
Amortized Cost Basis by Origination Year 2018	50,829	63,107
Amortized Cost Basis by Origination Year Prior to 2018	149,274	110,659
Amortized Cost - Revolving Loans	329,323	320,446
Amortized Cost - Revolving Loans Converted to Term Loans	1,215	2,523
Total Loans	2,634,518	2,320,033
Consumer Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	127	248
Amortized Cost Basis by Origination Year 2021		547
Amortized Cost Basis by Origination Year 2020	639	327
Amortized Cost Basis by Origination Year 2019	280	574
Amortized Cost Basis by Origination Year 2018	512	646
Amortized Cost Basis by Origination Year Prior to 2018	5,646	6,363
Amortized Cost - Revolving Loans	329,228	320,410
Amortized Cost - Revolving Loans Converted to Term Loans	1,215	2,523
Total Loans	337,647	331,638
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 2022	518,059	830,513
Amortized Cost Basis by Origination Year 2021	759,084	712,264
Amortized Cost Basis by Origination Year 2020	625,458	200,167
Amortized Cost Basis by Origination Year 2019	175,944	58,734
Amortized Cost Basis by Origination Year 2018	49,339	61,641
Amortized Cost Basis by Origination Year Prior to 2018	141,975	102,997
Amortized Cost - Revolving Loans	13	19
Total Loans	2,269,872	1,966,335
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 2022	7,624	9,114
Amortized Cost Basis by Origination Year 2021	8,641	6,299
Amortized Cost Basis by Origination Year 2020	5,332	3,361
Amortized Cost Basis by Origination Year 2019	2,689	1,150
Amortized Cost Basis by Origination Year 2018	978	820
Amortized Cost Basis by Origination Year Prior to 2018	1,653	1,299
Amortized Cost - Revolving Loans	82	17
Total Loans	26,999	22,060
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	25,237	42,251
Amortized Cost Basis by Origination Year 2021	36,022	9,816
Amortized Cost Basis by Origination Year 2020	6,272	7,411
Amortized Cost Basis by Origination Year 2019	4,297	2,650
Amortized Cost Basis by Origination Year 2018	1,655	3,021
Amortized Cost Basis by Origination Year Prior to 2018	848	928
Amortized Cost - Revolving Loans	59,944	62,938
Amortized Cost - Revolving Loans Converted to Term Loans	550	120
Total Loans	134,825	129,135
Consumer Portfolio [Member] | Revolving Line [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	469	974
Amortized Cost Basis by Origination Year 2021	585
Amortized Cost - Revolving Loans	54,610	60,049
Amortized Cost - Revolving Loans Converted to Term Loans	550	120
Total Loans	56,214	61,143
Consumer Portfolio [Member] | Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	7,346	9,886
Amortized Cost Basis by Origination Year 2021	7,402	7,775
Amortized Cost Basis by Origination Year 2020	5,022	5,462
Amortized Cost Basis by Origination Year 2019	3,305	1,107
Amortized Cost Basis by Origination Year 2018	451	479
Amortized Cost Basis by Origination Year Prior to 2018	222	220
Total Loans	23,748	24,929
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	17,422	31,391
Amortized Cost Basis by Origination Year 2021	28,035	2,041
Amortized Cost Basis by Origination Year 2020	1,250	1,949
Amortized Cost Basis by Origination Year 2019	992	1,543
Amortized Cost Basis by Origination Year 2018	1,204	2,542
Amortized Cost Basis by Origination Year Prior to 2018	626	708
Amortized Cost - Revolving Loans	5,334	2,889
Total Loans	54,863	43,063
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	435,980	391,389
Total Loans	435,980	391,389
Credit Cards Portfolio [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	183,799	180,296
Total Loans	183,799	180,296
Credit Cards Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	252,181	211,093
Total Loans	252,181	211,093
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	71,358	99,952
Amortized Cost Basis by Origination Year 2021	34,840	44,113
Amortized Cost Basis by Origination Year 2020	28,072	58,978
Amortized Cost Basis by Origination Year 2019	32,899	22,344
Amortized Cost Basis by Origination Year 2018	17,949	6,370
Amortized Cost Basis by Origination Year Prior to 2018	2,349	1,393
Amortized Cost - Revolving Loans	49,329	49,138
Total Loans	236,796	282,288
Leases and Other Portfolio [Member] | Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020		814
Amortized Cost Basis by Origination Year 2019	712
Amortized Cost Basis by Origination Year 2018		739
Amortized Cost Basis by Origination Year Prior to 2018	1,241	614
Total Loans	1,953	2,167
Leases and Other Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2022	71,358	99,952
Amortized Cost Basis by Origination Year 2021	34,840	44,113
Amortized Cost Basis by Origination Year 2020	28,072	58,164
Amortized Cost Basis by Origination Year 2019	32,187	22,344
Amortized Cost Basis by Origination Year 2018	17,949	5,631
Amortized Cost Basis by Origination Year Prior to 2018	1,108	779
Amortized Cost - Revolving Loans	49,329	49,138
Total Loans	$ 234,843	$ 280,121