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Stock-Based Compensation and Incentive Performance Plans (Summary of Stock Option Activity) (Details) - $ / shares
shares in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Outstanding      
Outstanding at beginning of year (in shares) 122 122 342
Exercised (in shares) 0 0 (220)
Outstanding at end of the year (in shares) 122 122 122
Options exercisable at year end (in shares) 122 122 122
Weighted Average Exercise Price      
Outstanding beginning of the year (USD per share) $ 2.26 $ 2.26 $ 6.66
Exercised (USD per share) 0.00 0.00 9.10
Outstanding end of the year (USD per share) 2.26 2.26 2.26
Options exercisable at end of year (USD per share) $ 2.26 $ 2.26 $ 2.26