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4. Bank Line of Credit (Tables)
9 Months Ended
Mar. 31, 2018
Debt Disclosure [Abstract]  
Schedule of Minimum Tangible Net Worth
  

March 31,

2018

 
    (In thousands) 
Minimum TNW  $6,305 
Actual TNW  $12,378 
Availability under the Line of Credit
   

March 31,

2018

    

June 30,

2017

 
    (In thousands)  
Outstanding borrowings on the line of credit   $   $  
Available borrowing capacity   $2,830   $ 2,812  
Outstanding letters of credit   $51   $ 51