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Other Accrued Liabilities (Tables)
3 Months Ended
Sep. 30, 2020
Payables and Accruals [Abstract]  
Accrued Liabilities
   September 30, 2020  June 30, 2020
     (unaudited)          
   (in thousands)
    
Accrued compensation  $377   $468 
Accrued expenses and interest   161    155 
 Other accrued liabilities  $538   $623