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Summary of Significant Accounting Policies (Details Narrative) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Jun. 30, 2020
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Bank net losses                     $ 2,400,000 $ 2,100,000  
Accrued interest receivable                     5,100,000    
Increase in allowance for credit losses                     2,300,000 1,100,000  
Decrease in the allowance for credit losses                     3,600,000 1,200,000  
All loan review amount                     $ 250,000    
Additional loan measurement description                     This independent third party reviews and evaluates loan relationships greater than or equal to $1.5 million as well as a periodic sample of commercial relationships with exposures below $1.5 million, excluding loans in default, and loans in process of litigation or liquidation    
Two loans amount                     $ 432,000    
Unpaid principal balances of mortgage loans serviced for others                     244,000 $ 285,000 $ 351,000
Reduction to retained earnings net of tax                     838,000    
Provision for credit losses for loans individually                     432,000    
Increases for reserves in loan pools                     $ 877,000    
Minimum [Member]                          
Loss rate                     0.3601% 0.1346%  
Maximum [Member]                          
Loss rate                     0.1346% 0.3601%  
2009 Plan [Member]                          
Restricted stock units granted       5,290 3,725   4,114 5,544 16,583        
Grant date fair value per share       $ 28.43 $ 31.43   $ 25.00 $ 16.91 $ 16.34        
Stock dividend paid           10.00%              
2020 Plan [Member]                          
Restricted stock units granted 5,370 5,385 7,060             7,635      
Grant date fair value per share $ 32.58 $ 27.99 $ 22.04             $ 17.08      
Shares reserved for possible issuance                     300,000    
Shares reserved remain available for future issuance                     274,550    
Unrecognized compensation expense                     $ 287,000    
Compensation expense for restricted stock                     $ 187,000    
Under The 2009 Plan And 2020 Plan [Member]                          
Compensation expense for restricted stock                       $ 249,000