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Employee Benefit and Stock Compensation Plans Benefit and Stock Compensation Text tags (Details) (USD $)
3 Months Ended 4 Months Ended 12 Months Ended
Dec. 31, 1994
Sep. 30, 2006
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2006
Mar. 31, 1995
Oct. 24, 1994
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Defined Contribution Plan, Employer Matching Contribution, Percent         100.00%      
Percent Net Income Goal to set off profit sharing     70.00%          
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent     2.00%   4.00%      
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage     20.00%     20.00%    
Allocated Share-based Compensation Expense     $ 0 $ 2,000        
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP 1,821,000              
Employee Stock Ownership Plan (ESOP), Shares in ESOP               182,132
Employee Stock Ownership Plan (ESOP), Compensation Expense       42,000        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number             22,591  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number     5,229 [1] 6,696 [1] 9,578 [1]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   20,000            
Maximum restricted stock to be granted 2006 Incentive Plan   10,000            
Compensation     36,000 84,000        
Management Recognition Plan [Member]
               
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated Share-based Compensation Expense     $ 44,000 $ 65,000 $ 65,000      
1995 Stock Option Plan [Member]
               
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options     3,438          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number     3,438          
Stock Option [Member]
               
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options     1,924          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number     1,790          
[1] Options for all periods presented reflects a 1-for-15 reverse stock split which was effective on October 27, 2011