Allowance for Credit Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 6,450,447	$ 4,916,624
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,359,083	3,306,054
Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,240,743	1,071,551
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	569,921	259,355
Construction
Financing Receivable, Past Due [Line Items]
Loans	211,560	222,281
Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	61,414	50,811
Leases
Financing Receivable, Past Due [Line Items]
Loans	7,726	6,572
CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,149,725	1,603,141
CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	984,807	706,307
Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	944,537	823,500
Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	280,014	173,106
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	790,349	666,960
SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	393,666	337,513
Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	56,728	67,078
Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,450,447	4,916,624
Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,359,083	3,306,054
Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,240,743	1,071,551
Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	569,921	259,355
Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	211,560	222,281
Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	61,414	50,811
Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	7,726	6,572
Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,149,725	1,603,141
Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	984,807	706,307
Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	944,537	823,500
Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	280,014	173,106
Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	790,349	666,960
Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	393,666	337,513
Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	56,728	67,078
Total Past Due Loans | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	4,947	4,332
Total Past Due Loans | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	332	1,509
Total Past Due Loans | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,463	2,128
Total Past Due Loans | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	2,773	557
Total Past Due Loans | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	379	90
Total Past Due Loans | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	0	48
Total Past Due Loans | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	0	0
Total Past Due Loans | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	263
Total Past Due Loans | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	173	671
Total Past Due Loans | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	159	0
Total Past Due Loans | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	575
Total Past Due Loans | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	303	375
Total Past Due Loans | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,045	1,609
Total Past Due Loans | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	115	144
30-59 days | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	2,681	836
30-59 days | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	159	497
30-59 days | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	222	145
30-59 days | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	2,300	146
30-59 days | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	0	0
30-59 days | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	0	48
30-59 days | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	0	0
30-59 days | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	226
30-59 days | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	271
30-59 days | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	159	0
30-59 days | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	0
30-59 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	24	0
30-59 days | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	172	36
30-59 days | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	26	109
60-89 days | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	488	880
60-89 days | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	98	164
60-89 days | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	200	381
60-89 days | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	190	245
60-89 days | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	0	90
60-89 days | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	0	0
60-89 days | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	0	0
60-89 days | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	37
60-89 days | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	98	127
60-89 days | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	0
60-89 days | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	0
60-89 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	0	13
60-89 days | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	166	361
60-89 days | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	34	7
> 90 days | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	1,778	2,616
> 90 days | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	75	848
> 90 days | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,041	1,602
> 90 days | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	283	166
> 90 days | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	379	0
> 90 days | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	0	0
> 90 days | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	0	0
> 90 days | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	0
> 90 days | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	75	273
> 90 days | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	0
> 90 days | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	575
> 90 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	279	362
> 90 days | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	707	1,212
> 90 days | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	55	28
Current | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,445,500	4,912,292
Current | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,358,751	3,304,545
Current | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,239,280	1,069,423
Current | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	567,148	258,798
Current | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	211,181	222,191
Current | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	61,414	50,763
Current | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	7,726	6,572
Current | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,149,725	1,602,878
Current | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	984,634	705,636
Current | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	944,378	823,500
Current | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	280,014	172,531
Current | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	790,046	666,585
Current | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	392,621	335,904
Current | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	$ 56,613	$ 66,934