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EMPLOYEE BENEFIT PLANS (Detail Textuals) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Retirement Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expenses related to plan $ 547 $ 489 $ 292
Directors' and Executive Officers' Deferred Compensation Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Deferred compensation plan annual interest rate 3.99% 3.68% 3.64%
Aggregate liability under the plan $ 330 $ 422  
Stock Option Plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum term 10 years    
Vesting period zero to five years    
Number of shares reserved for common stock 1,800,000    
Total intrinsic value of stock options exercised $ 257 $ 5 $ 16