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Earnings Per Share (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Redemptions of common stock or adjustments to redeemable common stock $ 0.0 $ 0.0 $ 0.0 $ 0.0
Stock Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Options outstanding not included in computation of diluted earnings per share 1,166,554   503,698  
Options exercise price range, lower limit $ 6.20   $ 8.75  
Options exercise price range, upper limit $ 13.16   $ 13.16