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Other Accrued Liabilities (Tables)
3 Months Ended
Sep. 30, 2018
Payables and Accruals [Abstract]  
Other Accrued Liabilities
   September 30, 2018  June 30, 2018
   (in thousands)
    
Accrued compensation  $252   $358 
Accrued expenses and interest   130    156 
Current portion of deferred rent payable   54    51 
 Other accrued liabilities  $436   $565