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STOCK OPTIONS AND RESTRICTED SHARES (Narrative) (Details)
12 Months Ended
Aug. 05, 2016
director
shares
Jun. 07, 2016
shares
Mar. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2018
USD ($)
$ / shares
shares
Mar. 31, 2017
USD ($)
$ / shares
shares
Aug. 03, 2016
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Reserved shares for issuance to eligible participants (in shares) | shares           1,750,000
Number of shares available for grant | shares     107,860      
Common stock closing price (usd per share)     $ 0.89      
Compensation expense | $     $ 825,000 $ 1,102,000 $ 1,605,000  
Common Stock, Shares | Executive            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock issued and sold (in shares) | shares   57,065        
Common Stock, Shares | Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock issued and sold (in shares) | shares 63,381          
Number of recently retired members of board of directors | director 3          
Restricted shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted shares granted (shares) | shares     529,000 730,410 1,132,392  
Compensation expense | $     $ 800,000      
Weighted average grant-date fair value (usd per share)     $ 0.84      
Restricted shares | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Per share price on grant date (USD per share)     0.84 $ 0.88 $ 1.35  
Weighted average grant-date fair value (usd per share)     0.84      
Restricted shares | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Per share price on grant date (USD per share)     1.00 $ 1.95 $ 2.22  
Weighted average grant-date fair value (usd per share)     $ 1.00      
Non-Employee Director | 2004 Stock and Incentive Awards Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Grant of shares to non-employees and consultants (shares) | shares       24,747 53,501  
Non-Employee Director | Minimum | 2004 Stock and Incentive Awards Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock closing price (usd per share)       $ 0.80 $ 1.38  
Non-Employee Director | Maximum | 2004 Stock and Incentive Awards Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock closing price (usd per share)       $ 1.28 $ 1.85  
Common stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation expense | $     $ 5,365