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Stock-Based Compensation (Stock-Settled Stock Appreciation Rights Grant Details) (Details) (Stock Settled Stock Appreciation Rights SARS [Member], USD $)
3 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Stock Settled Stock Appreciation Rights SARS [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
SSSARs granted (in rights) 2,000 0
Weighted average grant date fair value per right (dollars per right) $ 10.14  
Risk-free interest rate 0.61%  
Dividend yield 2.01%  
Volatility factor of the expected market price of our common stock 23.00%  
Weighted average expected life in years 2 years 8 months 5 days  
Estimated forfeiture rate 0.00%