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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, 2021
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   $ 257,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options     $ 10,000    
Allocated Share-based Compensation Expense     $ 3,000 $ 3,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number   4,350 3,633    
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay   100.00%      
Defined Contribution Plan, Employer Matching Contribution, Percent of Match   3.00%      
Compensation Expense   $ 118,000 $ 254,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   2,000 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   $ 1,000      
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   3,733      
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   $ 88,000      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options   3,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number   750      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant         250,000