Minimum Regulatory Capital Requirements - Summary of Capital Requirements Administered by Banking Agencies Capital Ratios (Detail) - Blue Ridge Bank, N.A [Member] $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total risk based capital, Actual Amount	$ 307,024	$ 303,876
Total risk based capital, Actual Ratio	0.1112	0.1122
Total risk based capital, For Capital Adequacy Purposes Amount	$ 289,940	$ 286,161
Total risk based capital, For Capital Adequacy Purposes Ratio	0.1050	0.1050
Total risk based capital, To Be Well Capitalized Under the Prompt Corrective Action Provisions Amount	$ 276,133	$ 272,535
Total risk based capital, To Be Well Capitalized Under the Prompt Corrective Action Provisions Ratio	0.1000	0.1000
Tier 1 capital to risk-weighted assets, Actual Amount	$ 277,898	$ 279,125
Tier 1 capital to risk-weighted assets, Actual Ratio	0.1006	0.1031
Tier 1 capital to risk-weighted assets, For Capital Adequacy Purposes Amount	$ 234,711	$ 231,470
Tier 1 capital to risk-weighted assets, For Capital Adequacy Purposes Ratio	0.0850	0.0850
Tier 1 capital to risk-weighted assets, To Be Well Capitalized Under the Prompt Corrective Action Provisions Amount	$ 220,905	$ 217,854
Tier 1 capital to risk-weighted assets, To Be Well Capitalized Under the Prompt Corrective Action Provisions Ratio	0.0800	0.0800
Common equity tier 1 capital, Actual Amount	$ 277,898	$ 279,125
Common equity tier 1 capital, Actual Ratio	10.06%	10.31%
Common equity tier 1 capital, For Capital Adequacy Purposes Amount	$ 193,368	$ 190,622
Common equity tier 1 capital, For Capital Adequacy Purposes Ratio	7.00%	7.00%
Common equity tier 1 capital, To Be Well Capitalized Under the Prompt Corrective Action Provisions Amount	$ 179,556	$ 177,006
Common equity tier 1 capital, To Be Well Capitalized Under the Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 leverage, Actual Amount	$ 277,898	$ 279,125
Tier 1 leverage, Actual Ratio	0.0850	0.0925
Tier 1 leverage, For Capital Adequacy Purposes Amount	$ 130,776	$ 120,703
Tier 1 leverage, For Capital Adequacy Purposes Ratio	0.0400	0.0400
Tier 1 leverage, To Be Well Capitalized Under the Prompt Corrective Action Provisions Amount	$ 163,469	$ 150,878
Tier 1 leverage, To Be Well Capitalized Under the Prompt Corrective Action Provisions Ratio	0.0500	0.0500