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Note 8 - Accrued Liabilities (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
 
 
2017
 
 
2016
 
Payroll and employee benefits
   $
28,522
     $
28,375
 
Workers' compensation
    
2,399
     
1,984
 
Warranty
    
9,243
     
9,085
 
Fair value of derivatives
    
3,014
      
1,132
  
Other
    
15,516
      
10,209
 
Total
   $
58,694
     $
50,785