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Common Stock Compensation - Stock Options by Exercise Price (Details)
3 Months Ended
Sep. 30, 2019
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range $ 2.83
Exercise price upper range $ 8.35
Number outstanding | shares 324,153
Options Outstanding Weighted- Average Remaining Contractual Life 5 years 6 months 21 days
Weighted average exercise price $ 5.71
Number exercisable | shares 236,075
Options exercisable weighted average exercise price $ 5.26
$2.83 – 3.55  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range 2.83
Exercise price upper range $ 3.55
Number outstanding | shares 70,500
Options Outstanding Weighted- Average Remaining Contractual Life 2 years 8 months 23 days
Weighted average exercise price $ 3.39
Number exercisable | shares 70,500
Options exercisable weighted average exercise price $ 3.39
$5.30 – 5.85  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range 5.30
Exercise price upper range $ 5.85
Number outstanding | shares 123,653
Options Outstanding Weighted- Average Remaining Contractual Life 7 years 7 months 9 days
Weighted average exercise price $ 5.48
Number exercisable | shares 79,575
Options exercisable weighted average exercise price $ 5.48
$6.00 – 8.35  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price lower range 6.00
Exercise price upper range $ 8.35
Number outstanding | shares 130,000
Options Outstanding Weighted- Average Remaining Contractual Life 5 years 1 month 24 days
Weighted average exercise price $ 7.19
Number exercisable | shares 86,000
Options exercisable weighted average exercise price $ 6.59