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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 9 Months Ended
Apr. 30, 2016
Feb. 29, 2016
Jun. 30, 2016
Jun. 30, 2015
Sep. 30, 2015
Restricted Stock Units (RSUs)          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unvested restricted stock outstanding     142,688   133,506
Compensation expense     $ 3.7 $ 1.3  
Restricted Stock Units (RSUs) | Time Based Restricted Stock Unit          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Actual amount of RSUs earned based on cumulative earnings   60.00%      
Vesting period   3 years      
Restricted Stock Units (RSUs) | Performance Based Restricted Stock Unit          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   3 years      
Target RSUs granted range   40.00%      
Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Compensation expense     $ 0.6 $ 1.0  
Restricted Stock | 2014 Non-Employee Director Equity Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   2 years      
Shares issued under the plan 1,000 16,000      
Shares issued, price per share $ 29.38 $ 25.63      
Restricted Stock | 2014 Non-Employee Director Equity Incentive Plan | Vesting of First Anniversary          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting percentage   50.00%      
Restricted Stock | 2014 Non-Employee Director Equity Incentive Plan | Vesting of Second Anniversary          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting percentage   50.00%