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Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Stock Option Activity (Details) - $ / shares
shares in Thousands
 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Shares    
Outstanding, beginning of period (in shares) 958 1,128
Granted (in shares) 924 170
Exercised (in shares) (45) (16)
Cancelled or expired (in shares) (11) (324)
Outstanding, end of period (in shares) 1,826 958
Weighted Average Exercise Price    
Outstanding, beginning of period (in dollars per share) $ 1.18 $ 1.53
Granted (in dollars per share) 1.23 1.50
Exercised (in dollars per share) 0.39 1.09
Cancelled or expired (in dollars per share) 3.01 2.56
Outstanding, end of period (in dollars per share) $ 1.25 $ 1.18