Loans and ACL - Summary of Accounts Notes Loans and Financing Receivable (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	$ 2,457,325	$ 2,412,699
Less: deferred loan fees, net of costs	(345)	(1,640)
Total	2,456,980	2,411,059
Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	571,095	590,049
Paycheck Protection Program [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	7,988	11,967
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	58,907	47,423
Grade 1 Prime [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		13,031
Grade 2 Desirable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		10,887
Grade 3 Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		654,467
Grade 4 Acceptable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,522,644
Grade 5 Pass/Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		143,207
Grade 6 Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		10,059
Grade 7 Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		58,404
Real Estate [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	180,149	183,301
Real Estate [Member] | Construction, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	92,403	76,599
Real Estate [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	867,916	864,989
Real Estate [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	672,473	631,772
Real Estate [Member] | Mortgage, Farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	$ 6,394	6,599
PCI Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		58,748
PCI Loans [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,481
PCI Loans [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		359
PCI Loans [Member] | Grade 4 Acceptable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		25,607
PCI Loans [Member] | Grade 4 Acceptable [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,369
PCI Loans [Member] | Grade 5 Pass/Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		28,397
PCI Loans [Member] | Grade 5 Pass/Watch [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		353
PCI Loans [Member] | Grade 6 Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,812
PCI Loans [Member] | Grade 6 Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		112
PCI Loans [Member] | Grade 7 Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		2,932
PCI Loans [Member] | Grade 7 Substandard [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		6
PCI Loans [Member] | Real Estate [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		7
PCI Loans [Member] | Real Estate [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		51,223
PCI Loans [Member] | Real Estate [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		5,678
PCI Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		7
PCI Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		22,778
PCI Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,453
PCI Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		26,059
PCI Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,985
PCI Loans [Member] | Real Estate [Member] | Grade 6 Special Mention [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,700
PCI Loans [Member] | Real Estate [Member] | Grade 7 Substandard [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		686
PCI Loans [Member] | Real Estate [Member] | Grade 7 Substandard [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		2,240
Originated and Purchased Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		2,353,951
Originated and Purchased Performing Loans [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		588,568
Originated and Purchased Performing Loans [Member] | Paycheck Protection Program [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		11,967
Originated and Purchased Performing Loans [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		47,064
Originated and Purchased Performing Loans [Member] | Grade 1 Prime [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		13,031
Originated and Purchased Performing Loans [Member] | Grade 1 Prime [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		318
Originated and Purchased Performing Loans [Member] | Grade 1 Prime [Member] | Paycheck Protection Program [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		11,967
Originated and Purchased Performing Loans [Member] | Grade 1 Prime [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		197
Originated and Purchased Performing Loans [Member] | Grade 2 Desirable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		10,887
Originated and Purchased Performing Loans [Member] | Grade 2 Desirable [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		885
Originated and Purchased Performing Loans [Member] | Grade 3 Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		654,467
Originated and Purchased Performing Loans [Member] | Grade 3 Good [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		193,144
Originated and Purchased Performing Loans [Member] | Grade 3 Good [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		21,330
Originated and Purchased Performing Loans [Member] | Grade 4 Acceptable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,497,037
Originated and Purchased Performing Loans [Member] | Grade 4 Acceptable [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		312,278
Originated and Purchased Performing Loans [Member] | Grade 4 Acceptable [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		24,731
Originated and Purchased Performing Loans [Member] | Grade 5 Pass/Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		114,810
Originated and Purchased Performing Loans [Member] | Grade 5 Pass/Watch [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		38,552
Originated and Purchased Performing Loans [Member] | Grade 5 Pass/Watch [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		256
Originated and Purchased Performing Loans [Member] | Grade 6 Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		8,247
Originated and Purchased Performing Loans [Member] | Grade 6 Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		2,834
Originated and Purchased Performing Loans [Member] | Grade 7 Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		55,472
Originated and Purchased Performing Loans [Member] | Grade 7 Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		40,557
Originated and Purchased Performing Loans [Member] | Grade 7 Substandard [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		550
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		183,294
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Construction, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		76,599
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		813,766
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		626,094
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Mortgage, Farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		6,599
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 1 Prime [Member] | Mortgage, Farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		549
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 2 Desirable [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		361
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 2 Desirable [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		2,330
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 2 Desirable [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		7,311
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 3 Good [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		14,223
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 3 Good [Member] | Construction, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		3,110
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 3 Good [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		187,648
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 3 Good [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		233,697
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 3 Good [Member] | Mortgage, Farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,315
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		156,027
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Construction, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		72,327
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		561,554
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		365,511
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 4 Acceptable [Member] | Mortgage, Farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		4,609
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		8,504
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Construction, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		1,162
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		54,352
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		11,858
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 5 Pass/Watch [Member] | Mortgage, Farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		126
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 6 Special Mention [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		3,365
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 6 Special Mention [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		2,048
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 7 Substandard [Member] | Construction, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		814
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 7 Substandard [Member] | Mortgage, Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		5,834
Originated and Purchased Performing Loans [Member] | Real Estate [Member] | Grade 7 Substandard [Member] | Mortgage, Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans		$ 7,717