v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
9 Months Ended 12 Months Ended
Jul. 01, 2025
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
shares
Business Combination, Acquisition-Related Cost, Expense $ 1,900,000   $ 1,963,000 $ 0 $ 0  
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss     0 0    
Debt Securities, Trading     0 0    
Federal Home Loan Bank Stock     8,084,000 6,234,000    
Federal Reserve Bank Stock     3,565,000 1,380,000    
Real Estate Acquired Through Foreclosure     $ 226,000 $ 91,000    
Number of Mortgage Loans in Process of Foreclosure     1 1    
Mortgage Loans in Process of Foreclosure, Amount     $ 2,000,000 $ 53,000    
Proceeds from Sale of Other Real Estate     22,000 362,000 122,000  
Gains (Losses) on Sales of Other Real Estate     (0) 5,000 39,000  
Amortization of Intangible Assets     1,300,000 201,000 237,000  
Finite-Lived Intangible Asset, Expected Amortization, Year One     2,235,000      
Finite-Lived Intangible Asset, Expected Amortization, Year Two     1,990,000      
Finite-Lived Intangible Asset, Expected Amortization, Year Three     1,742,000      
Finite-Lived Intangible Asset, Expected Amortization, Year Four     1,479,000      
Finite-Lived Intangible Asset, Expected Amortization, Year Five     1,244,000      
Goodwill     24,215,000 5,502,000    
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax     5,811,000 19,817,000 0  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax     (1,718,000) (5,858,000) (0)  
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, before Tax     254,000 0 0  
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, Tax     75,000 (0) (0)  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax     (5,811,000) (19,817,000) 1,707,000  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax     (1,718,000) (5,858,000) 505,000  
Share-Based Payment Arrangement, Expense, after Tax     $ 320,000 $ 450,000 $ 300,000  
Allocated Share Based Compensation Expense Net of Tax Per Diluted Share (in dollars per share) | $ / shares     $ 0.05 $ 0.08 $ 0.05  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares     30,803 107,200 0  
Restricted Stock [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares     0 435 0 1,650
Restricted Stock Units (RSUs) [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares     0 3,033 0  
Feather River Bancorp, Inc. [Member]            
Goodwill, Impairment Loss     $ 0 $ 0 $ 0  
Core Deposits [Member]            
Amortization of Intangible Assets     $ 1,300,000 $ 201,000 $ 237,000  
Other Real Estate, Residential Real Estate [Member]            
Number of Real Estate Properties     2 1    
Cornerstone Community Bancorp [Member]            
Business Combination, Acquisition-Related Cost, Expense   $ 6,400,000        
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Fair Value 432,000,000          
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Gross Contractual Amount 579,000,000          
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Contractual Cash Flow, Estimated Uncollectible 6,700,000          
Goodwill $ 18,713,000          
Cornerstone Community Bancorp [Member] | Core Deposits [Member]            
Finite-Lived Intangible Asset, Useful Life (Year) 10 years          
Feather River Bancorp, Inc. [Member]            
Goodwill $ 18,713,000          
Feather River Bancorp, Inc. [Member] | Core Deposits [Member]            
Finite-Lived Intangible Asset, Useful Life (Year)       10 years    
Minimum [Member] | Building [Member]            
Property, Plant and Equipment, Useful Life (Year)     20 years      
Minimum [Member] | Furniture and Fixtures [Member]            
Property, Plant and Equipment, Useful Life (Year)     2 years      
Maximum [Member] | Building [Member]            
Property, Plant and Equipment, Useful Life (Year)     30 years      
Maximum [Member] | Furniture and Fixtures [Member]            
Property, Plant and Equipment, Useful Life (Year)     10 years      
SBA, RBS and FSA [Member] | Minimum [Member]            
Loans Held-for-sale, Percent Guaranteed     75.00%      
SBA, RBS and FSA [Member] | Maximum [Member]            
Loans Held-for-sale, Percent Guaranteed     90.00%      
SBA [Member]            
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance     $ 0 $ 0    
Guaranteed Loans With Unpaid Balance     $ 83,668,000,000 $ 95,332,000