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Stock-Based Compensation (Stock-Settled Stock Appreciation Rights Compensation Expense And Tax Benefits Recorded) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Excess tax benefits $ 1,123 $ 1,417 $ 563
Stock Settled Stock Appreciation Rights SARS [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense 1,882 1,472 1,288
Tax benefits 659 515 451
Intrinsic value of exercises 2,281 3,788 1,162
Excess tax benefits $ 798 $ 1,341 $ 410