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Share-Based Compensation (Restricted Stock Outstanding) (Details) - Restricted Stock [Member]
12 Months Ended
Jun. 30, 2018
$ / shares
shares
Shares  
Outstanding, beginning of year (in shares) | shares 267,386
Granted during the period (in shares) | shares 138,665
Target shares adjustment during the period (in shares) | shares (216)
Vested during period (in shares) | shares (146,046)
Canceled, forfeited, or expired during the period (in shares) | shares (6,270)
Outstanding, end of year (in shares) | shares 253,519
Weighted Average Grant Date Fair- Value  
Outstanding, beginning of year, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares $ 37.86
Granted during the period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares 34.50
Target shares adjustment during the period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares 36.33
Vested during the period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares 38.16
Canceled, forfeited or expired during the period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares 34.77
Outstanding, end of year, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares $ 35.93