Loans - Summary of Loan Balances (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 6,450,447	$ 4,916,624
Total principal balance of loans owed, net of charge-offs	6,496,210	4,946,653
Unamortized net deferred loan fees	(15,275)	(13,922)
Discounts to principal balance of loans owed, net of charge-offs	(30,488)	(16,107)
Allowance for credit losses	(105,680)	(85,376)	$ (91,847)	$ (30,616)
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	4,359,083	3,306,054
Allowance for credit losses	(61,381)	(51,140)	(53,693)	(11,995)
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	1,240,743	1,071,551
Allowance for credit losses	(24,639)	(23,474)	(25,148)	(10,084)
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total	569,921	259,355
Allowance for credit losses	(13,597)	(3,862)	(4,252)	(4,867)
Construction
Loans and Leases Receivable Disclosure [Line Items]
Total	211,560	222,281
Allowance for credit losses	(5,142)	(5,667)	(7,540)	(3,388)
Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Total	61,414	50,811
Allowance for credit losses	(906)	(1,215)	(1,209)	(261)
Leases
Loans and Leases Receivable Disclosure [Line Items]
Total	7,726	6,572
Allowance for credit losses	(15)	(18)	(5)	(21)
CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	2,149,725	1,603,141
Allowance for credit losses	(30,962)	(25,739)	(29,380)	(5,948)
CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	984,807	706,307
Allowance for credit losses	(14,014)	(10,691)	(10,861)	(2,027)
Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	944,537	823,500
Allowance for credit losses	(13,132)	(12,395)	(11,472)	(3,352)
Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	280,014	173,106
Allowance for credit losses	(3,273)	(2,315)	(1,980)	(668)
SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	790,349	666,960
SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	393,666	337,513
Allowance for credit losses	(11,413)	(10,510)	(11,771)	(6,183)
Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	56,728	67,078
Allowance for credit losses	$ (1,958)	$ (2,241)	$ (3,260)	$ (1,595)