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Note F - Defined Benefit Pension Plan (Tables)
9 Months Ended
Mar. 31, 2015
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
 
 
Three Months Ended
March 31,
 
 
Nine Months Ended
March 31,
 
 
 
2015
 
 
2014
 
 
2015
 
 
2014
 
Interest cost
  $ 21     $ 22     $ 63     $ 66  
Expected return on plan assets
    (8 )     (9 )     (25 )     (28 )
Net periodic expense
  $ 13     $ 13     $ 38     $ 38