v3.25.2
Fair Value Information - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value on Non-Recurring Basis [Member] - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Description of assets    
Total assets $ 171 $ 2,585
Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]    
Description of assets    
Total assets 1 11
Loans, Excluding PCI Loans [Member] | Construction [Member]    
Description of assets    
Total assets 0 0
Loans, Excluding PCI Loans [Member] | SBA [Member]    
Description of assets    
Total assets 51 49
Loans, Excluding PCI Loans [Member] | Sba Ppp [Member]    
Description of assets    
Total assets 0 0
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]    
Description of assets    
Total assets 109 220
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]    
Description of assets    
Total assets 10 9
Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member]    
Description of assets    
Total assets 0 0
Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]    
Description of assets    
Total assets 0 0
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]    
Description of assets    
Total assets 0 0
Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]    
Description of assets    
Total assets 0 2,296
Level 1 [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Sba Ppp [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]    
Description of assets    
Total assets 0 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]    
Description of assets    
Total assets 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]    
Description of assets    
Total assets 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Sba Ppp [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]    
Description of assets    
Total assets 0 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]    
Description of assets    
Total assets 0 0
Level 3 [Member]    
Description of assets    
Total assets 36,161 44,693
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]    
Description of assets    
Total assets 32,248 28,728
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]    
Description of assets    
Total assets 0 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]    
Description of assets    
Total assets 1,268 1,532
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Sba Ppp [Member]    
Description of assets    
Total assets 0 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]    
Description of assets    
Total assets 1,529 3,144
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]    
Description of assets    
Total assets 455 860
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member]    
Description of assets    
Total assets 0 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]    
Description of assets    
Total assets 0 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]    
Description of assets    
Total assets 0 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]    
Description of assets    
Total assets 661 10,429
Carrying Value [Member]    
Description of assets    
Total assets 36,161 44,693
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]    
Description of assets    
Total assets 32,248 28,728
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]    
Description of assets    
Total assets 0 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]    
Description of assets    
Total assets 1,268 1,532
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Sba Ppp [Member]    
Description of assets    
Total assets 0 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]    
Description of assets    
Total assets 1,529 3,144
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]    
Description of assets    
Total assets 455 860
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member]    
Description of assets    
Total assets 0 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]    
Description of assets    
Total assets 0 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]    
Description of assets    
Total assets 0 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]    
Description of assets    
Total assets $ 661 $ 10,429