Stock-Based Compensation (Stock-Settled Stock Appreciation Rights Grant Details) (Details) (Stock Settled Stock Appreciation Rights SARS [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock Settled Stock Appreciation Rights SARS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SSSARs granted (in rights)	149	146
Weighted average grant date fair value per award (usd per share)	$ 9.94	$ 11.84
Weighted average assumptions used in fair value calculations:
Risk-free interest rate	0.86%	0.75%
Dividend yield	2.02%	1.97%
Volatility factor of the expected market price of our common stock	19.62%	22.35%
Weighted average expected life in years	2 years 8 months 16 days	3 years 1 month 13 days