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STOCKHOLDERS' EQUITY: - Employee Stock Purchase Plan (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Nov. 30, 2018
$ / shares
Nov. 30, 2018
$ / shares
Jan. 31, 2015
$ / shares
Jan. 31, 2015
$ / shares
Sep. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
$ / shares
shares
Retained earnings                
Dividends paid as cash dividend (in dollars per share)           $ 1   $ 1
Employee Stock Purchase 2015 Plan                
Information related to compensation cost                
Purchase price for initial subscription (in dollars per share) | (per share)     $ 2.63 $ 38.44        
Percentage of title acquired by employee in every two years on shares paid in previous two years           50.00%    
Period of plan           8 years    
Ratio of bonus shares granted to participant           0.1    
Stock based compensation expense | $           $ 0.2   $ 0.2
Unrecognized compensation expense | $               $ 0.6
Stock award activity, Shares                
Outstanding shares at the beginning of the period | shares           845,895   867,234
Exercised (in shares) | shares           (572,136)   (16,394)
Outstanding shares at the end of the period | shares           273,759   850,840
Unit Weighted Average Grant Date Fair Value                
Outstanding shares at the beginning of the period (in dollars per share)           $ 2.63   $ 2.63
Exercised (in dollars per share)           2.63   2.63
Outstanding shares at the end of the period (in dollars per share)           $ 2.63   $ 2.63
Employee Stock Purchase 2018 Plan                
Information related to compensation cost                
Purchase price for initial subscription (in dollars per share) | (per share) $ 1.86 $ 37.89            
Percentage of title acquired by employee in every two years on shares paid in previous two years           50.00%    
Period of plan           8 years    
Ratio of bonus shares granted to participant           0.1    
Stock based compensation expense | $         $ 0.2   $ 0.2  
Unrecognized compensation expense | $         $ 2.2   $ 2.9  
Stock award activity, Shares                
Outstanding shares at the beginning of the period | shares           2,754,506   3,173,924
Exercised (in shares) | shares           (624,026)   (115,903)
Outstanding shares at the end of the period | shares           2,130,480   3,058,021
Unit Weighted Average Grant Date Fair Value                
Outstanding shares at the beginning of the period (in dollars per share)           $ 1.86   $ 1.86
Exercised (in dollars per share)           1.86    
Outstanding shares at the end of the period (in dollars per share)           $ 1.86   $ 1.86