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Note G - Accrued Liabilities (Tables)
12 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
   
2019
   
2018
 
Customer deposits
  $
14,924
    $
5,426
 
Salaries and wages
   
6,982
     
10,311
 
Warranty
   
3,034
     
3,952
 
Accrued professional fees
   
1,843
     
3,501
 
Other
   
12,826
     
9,786
 
    $
39,609
    $
32,976