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Employee Benefit and Stock Compensation Plans Text Tag (Details) - USD ($)
4 Months Ended 12 Months Ended
Sep. 30, 2006
Mar. 31, 2020
Mar. 31, 2019
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options   $ 67,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   2,000    
Allocated Share-based Compensation Expense   $ 4,000 $ 4,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number   3,633 3,383  
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay   100.00%    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match   3.00%    
Percent Net Income Goal to set off profit sharing   70.00%    
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent   2.00%    
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage   20.00%    
Compensation Expense   $ 254,000 $ 257,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value   $ 0    
1995 Stock Option Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense     $ 3,000  
2006 Stock Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense   $ 3,000    
Maximum restricted stock to be granted 2006 Incentive Plan 10,000      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options   3,733    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number   3,133    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 20,000      
2014 Stock Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense   $ 24,000    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options   1,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number   500    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant       250,000