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Stock-Based Compensation (Stock-Settled Stock Appreciation Rights Granted Details) (Details) (Stock Settled Stock Appreciation Rights SARS [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Stock Settled Stock Appreciation Rights SARS [Member]
     
SSSARs granted 187 94 168
Weighted average fair value per right $ 9.07 $ 10.12 $ 11.81
Weighted average assumptions used in fair value calculations:      
Risk-free interest rate 0.41% 1.27% 1.67%
Dividend yield 2.11% 2.28% 2.04%
Volatility factor of the expected market price of our common stock 24.30% 28.78% 29.97%
Expected life in years 2 years 9 months 4 days 3 years 1 month 10 days 3 years 6 months
Estimated forfeiture rate 4.00% 4.00% 4.00%