| Computation of earnings per share |  |  |  |  |  |  |  |  |  |  |  |  | 
  
    |  |  | Three Months Ended September 30, |  |  | Six Months Ended September 30, |  | 
  
    | (In thousands, except per share data) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |  | 
  
    | Numerator: |  |  |  |  |  |  |  |  |  |  |  |  | 
  
    | Net loss |  | $ | (1,017 | ) |  | $ | (100 | ) |  | $ | (1,904 | ) |  | $ | (1,198 | ) | 
  
    |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
  
    | Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
  
    | Weighted-average number of common shares outstanding: basic 
 |  |  | 3,101 |  |  |  | 2,344 |  |  |  | 3,101 |  |  |  | 2,219 |  | 
  
    | Weighted-average number of common shares outstanding: diluted |  |  | 3,101 |  |  |  | 2,344 |  |  |  | 3,101 |  |  |  | 2,219 |  | 
  
    |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
  
    | Net income (loss) per share: basic |  | $ | (0.33 | ) |  | $ | (0.04 | ) |  | $ | (0.61 | ) |  | $ | (0.54 | ) | 
  
    | Net income (loss) per share: diluted |  | $ | (0.33 | ) |  | $ | (0.04 | ) |  | $ | (0.61 | ) |  | $ | (0.54 | ) |