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Common Stock Incentive, Stock Purchase Plans and Other Compensation Plans - Stock Options by Exercise Price (Details)
 6 Months Ended
Dec. 31, 2017
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) $ 1.6
Exercise price upper range (in dollars per share) $ 16
Number outstanding (in shares) | shares 363,057
Options Outstanding Weighted- Average Remaining Contractual Life 6 years 11 months 27 days
Weighted average exercise price (in dollars per share) $ 6.07
Number exercisable (in shares) | shares 175,814
Options exercisable weighted average exercise price (in dollars per share) $ 5.57
$1.60 – 3.55  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 1.60
Exercise price upper range (in dollars per share) $ 3.55
Number outstanding (in shares) | shares 77,550
Options Outstanding Weighted- Average Remaining Contractual Life 2 years 10 months 10 days
Weighted average exercise price (in dollars per share) $ 3.11
Number exercisable (in shares) | shares 77,550
Options exercisable weighted average exercise price (in dollars per share) $ 3.11
$5.30 – 8.35  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 5.30
Exercise price upper range (in dollars per share) $ 8.35
Number outstanding (in shares) | shares 268,507
Options Outstanding Weighted- Average Remaining Contractual Life 8 years 2 months 1 day
Weighted average exercise price (in dollars per share) $ 6.30
Number exercisable (in shares) | shares 86,000
Options exercisable weighted average exercise price (in dollars per share) $ 6.59
$16.00 – 16.00  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range (in dollars per share) 16
Exercise price upper range (in dollars per share) $ 16
Number outstanding (in shares) | shares 17,000
Options Outstanding Weighted- Average Remaining Contractual Life 7 years 3 months 7 days
Weighted average exercise price (in dollars per share) $ 16.00
Number exercisable (in shares) | shares 12,264
Options exercisable weighted average exercise price (in dollars per share) $ 16.00