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Earnings per Common Share - Antidilutive Securities Excluded from the Calculation of Diluted Earnings Per Share (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Stock Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Total antidilutive securities 46 0 0 0
Nonvested Deferred Shares [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Total antidilutive securities 533 269 173 113