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Stock-Based Compensation (Schedule Of Stock Option Plans) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Stock-Based Compensation [Abstract]      
Shares, Outstanding and exercisable 270 457  
Shares, Granted 24 26  
Shares, Exercised (98) (207)  
Shares, Canceled (9) (6)  
Shares, Outstanding and exercisable 187 270  
Weighted Average Exercise Price, Oustanding and exercisable $ 22.85 $ 17.02  
Weighted Average Exercise Price, Granted 47.45 43.09  
Weighted Average Exercise Price, Exercised 20.57 12.68  
Weighted Average Exercise Price, Canceled 20.51 22.32  
Weighted Average Exercise Price, Oustanding and exercisable $ 27.21 $ 22.85  
Aggregate Intrinsic Value $ 5,039 $ 4,638 $ 11,916