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Common Stock Incentive, Stock Purchase Plans and Other Compensation Plans - Stock Options by Exercise Price (Details)
 3 Months Ended
Sep. 30, 2016
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) $ 0.32
Exercise price upper range (in dollars per share) 3.20
$0.32 - 0.71  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 0.32
Exercise price upper range (in dollars per share) $ 0.71
Number outstanding (in shares) | shares 432,750
Options Outstanding Weighted- Average Remaining Contractual Life (years) 3 years 10 months 20 days
Weighted average exercise price (in dollars per share) $ 0.60
Number exercisable (in shares) | shares 432,705
Options exercisable weighted average exercise price (in dollars per share) $ 0.60
$1.20 - 1.67  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 1.20
Exercise price upper range (in dollars per share) $ 1.67
Number outstanding (in shares) | shares 650,000
Options Outstanding Weighted- Average Remaining Contractual Life (years) 8 years 1 month 24 days
Weighted average exercise price (in dollars per share) $ 1.44
Number exercisable (in shares) | shares 430,000
Options exercisable weighted average exercise price (in dollars per share) $ 1.32
$3.20 - 3.20  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 3.20
Exercise price upper range (in dollars per share) $ 3.20
Number outstanding (in shares) | shares 91,000
Options Outstanding Weighted- Average Remaining Contractual Life (years) 8 years 6 months 7 days
Weighted average exercise price (in dollars per share) $ 3.20
Number exercisable (in shares) | shares 0
Options exercisable weighted average exercise price (in dollars per share) $ 0.00
$0.32 - 3.20  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 0.32
Exercise price upper range (in dollars per share) $ 3.20
Number outstanding (in shares) | shares 1,173,750
Options Outstanding Weighted- Average Remaining Contractual Life (years) 6 years 4 months 17 days
Weighted average exercise price (in dollars per share) $ 1.27
Number exercisable (in shares) | shares 862,705
Options exercisable weighted average exercise price (in dollars per share) $ 0.96