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Stock-Based Compensation, Stock Options Outstanding and Exercisable (Details) - $6.25 [Member]
12 Months Ended
Jun. 30, 2017
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 6.25
Range of exercise prices, lower range limit (in dollars per share) $ 6.25
Number Outstanding (in shares) | shares 37,770
Options Outstanding, Weighted Average Remaining Contractual Life 1 year 3 months
Options outstanding, weighted average exercise price (in dollars per share) $ 6.25
Options exercisable, weighted average remaining contractual life 1 year 3 months
Options exercisable, weighted average exercise price (in dollars per share) $ 6.25