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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2015
Long-Term Management Incentive Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares approved to be issued under plan 500,000   500,000    
Shares issued     240,325    
Performance awards earned, percentage payable as stock     60.00%    
Performance awards earned, percentage payable as cash     40.00%    
Cash awards payable within current liabilities         $ 0.7
Compensation cost   $ 0.5   $ 0.8  
Stock Option Plans [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Period options are excercisable     10 years    
New Long-Term Management Incentive Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares approved to be issued under plan 700,000   700,000    
Shares issued     2,594    
Compensation cost $ 0.2 $ 0.1 $ 0.5 0.2  
New Long-Term Management Incentive Compensation Plan [Member] | 2016-2018[Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation cost     $ 1.0    
New Omnibus Stock Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares approved to be issued under plan 700,000   700,000    
Compensation cost     $ 0.2 $ 0.4  
Period options are excercisable     10 years    
Shares available for future grants 570,562   570,562