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Stock-Based Compensation (Narrative) (Details)
$ in Millions
9 Months Ended
Mar. 31, 2016
USD ($)
shares
Stock Settled Stock Appreciation Rights SARS [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense | $ $ 3.1
Weighted-average period over which remaining compensation expense will be recognized (in years) 2 years
Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense | $ $ 3.8
Weighted-average period over which remaining compensation expense will be recognized (in years) 2 years
2005 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common shares reserved for issuance to employees and directors | shares 2,000,000
2005 Plan [Member] | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Maximum term of stock awards granted 5 years
2015 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common shares reserved for issuance to employees and directors | shares 1,500,000
2015 Plan [Member] | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Maximum term of stock awards granted 5 years