Allowance for Credit Losses - Summary of Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 85,376	$ 91,847	$ 30,616
ACL on PCD Loans	2,037
Charge-offs	(1,585)	(2,392)	(1,755)
Recoveries	1,907	3,086	1,885
Provision for (Benefit from) Credit Losses	17,945	(7,165)	42,188
Ending Balance	105,680	85,376	91,847
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning Balance	3,790	3,400
ACL on PCD Loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	525	390
Ending Balance	4,315	3,790	3,400
Credit Loss [Roll Forward]
Beginning Balance	89,166	95,247	33,391
ACL on PCD Loans	2,037
Charge-offs	(1,585)	(2,392)	(1,755)
Recoveries	1,907	3,086	1,885
Provision for (Benefit from) Credit Losses	18,470	(6,775)	42,813
Ending Balance	109,995	89,166	95,247
Commercial loans
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning Balance			2,775
Provision for (Benefit from) Credit Losses			625
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		18,913
Ending Balance			18,913
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning Balance		0
Ending Balance			0
Credit Loss [Roll Forward]
Beginning Balance		18,913
Ending Balance			18,913
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	51,140	53,693	11,995
ACL on PCD Loans	1,573
Charge-offs	(294)	(144)	(182)
Recoveries	3	806	226
Provision for (Benefit from) Credit Losses	8,959	(3,215)	29,806
Ending Balance	61,381	51,140	53,693
Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		11,848
Ending Balance			11,848
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	23,474	25,148	10,084
ACL on PCD Loans	144
Charge-offs	(594)	(751)	(799)
Recoveries	743	1,501	1,067
Provision for (Benefit from) Credit Losses	872	(2,424)	6,512
Ending Balance	24,639	23,474	25,148
Consumer \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		8,284
Ending Balance			8,284
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,862	4,252	4,867
ACL on PCD Loans	81
Charge-offs	(697)	(1,470)	(774)
Recoveries	1,157	755	568
Provision for (Benefit from) Credit Losses	9,194	325	1,552
Ending Balance	13,597	3,862	4,252
Commercial and industrial \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		(1,961)
Ending Balance			(1,961)
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	5,667	7,540	3,388
ACL on PCD Loans	201
Charge-offs	0	(27)	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	(726)	(1,846)	3,219
Ending Balance	5,142	5,667	7,540
Construction \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		933
Ending Balance			933
Agriculture production
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,215	1,209	261
ACL on PCD Loans	38
Charge-offs	0	0	0
Recoveries	4	24	24
Provision for (Benefit from) Credit Losses	(351)	(18)	1,103
Ending Balance	906	1,215	1,209
Agriculture production \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		(179)
Ending Balance			(179)
Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	18	5	21
ACL on PCD Loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	(3)	13	(4)
Ending Balance	15	18	5
Leases \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		(12)
Ending Balance			(12)
CRE non-owner occupied \| Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	25,739	29,380	5,948
ACL on PCD Loans	746
Charge-offs	0	0	0
Recoveries	1	12	198
Provision for (Benefit from) Credit Losses	4,476	(3,653)	16,533
Ending Balance	30,962	25,739	29,380
CRE non-owner occupied \| Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		6,701
Ending Balance			6,701
CRE owner occupied \| Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	10,691	10,861	2,027
ACL on PCD Loans	63
Charge-offs	0	(18)	0
Recoveries	2	794	28
Provision for (Benefit from) Credit Losses	3,258	(946)	6,525
Ending Balance	14,014	10,691	10,861
CRE owner occupied \| Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		2,281
Ending Balance			2,281
Multifamily \| Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	12,395	11,472	3,352
ACL on PCD Loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	737	923	5,839
Ending Balance	13,132	12,395	11,472
Multifamily \| Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		2,281
Ending Balance			2,281
Farmland \| Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,315	1,980	668
ACL on PCD Loans	764
Charge-offs	(294)	(126)	(182)
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	488	461	909
Ending Balance	3,273	2,315	1,980
Farmland \| Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		585
Ending Balance			585
SFR 1-4 1st DT liens \| Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	10,723	10,117	2,306
ACL on PCD Loans	144
Charge-offs	0	(145)	(13)
Recoveries	79	13	416
Provision for (Benefit from) Credit Losses	322	738	4,733
Ending Balance	11,268	10,723	10,117
SFR 1-4 1st DT liens \| Consumer \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		2,675
Ending Balance			2,675
SFR HELOCs and junior liens \| Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	10,510	11,771	6,183
ACL on PCD Loans	0
Charge-offs	(22)	(29)	(116)
Recoveries	429	1,127	304
Provision for (Benefit from) Credit Losses	496	(2,359)	762
Ending Balance	11,413	10,510	11,771
SFR HELOCs and junior liens \| Consumer \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		4,638
Ending Balance			4,638
Other \| Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,241	3,260	1,595
ACL on PCD Loans	0
Charge-offs	(572)	(577)	(670)
Recoveries	235	361	347
Provision for (Benefit from) Credit Losses	54	(803)	1,017
Ending Balance	$ 1,958	2,241	3,260
Other \| Consumer \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		$ 971
Ending Balance			$ 971

Credit Loss, Allowance For Credit Loss

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Credit Loss, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase

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Credit Loss, Allowance For Credit Loss, Recovery

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Credit Loss, Allowance For Credit Loss, Writeoff

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Off-Balance Sheet, Credit Loss, Purchased with Credit Deterioration, Increase

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Off Balance Sheet, Credit Loss, Recovery

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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