Common Stock Compensation - Stock Options by Exercise Price (Details)	9 Months Ended
	Mar. 31, 2019 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price lower range (in dollars per share)	$ 1.60
Exercise price upper range (in dollars per share)	$ 8.35
Number outstanding (in shares) | shares	325,140
Options Outstanding Weighted- Average Remaining Contractual Life	6 years 25 days
Weighted average exercise price (in dollars per share)	$ 5.71
Number exercisable (in shares) | shares	198,451
Options exercisable weighted average exercise price (in dollars per share)	$ 5.21
$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	70,500
Options Outstanding Weighted- Average Remaining Contractual Life	3 years 2 months 23 days
Weighted average exercise price (in dollars per share)	$ 3.39
Number exercisable (in shares) | shares	70,500
Options exercisable weighted average exercise price (in dollars per share)	$ 3.39
$5.30 - 5.85
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)	$ 5.85
Number outstanding (in shares) | shares	124,640
Options Outstanding Weighted- Average Remaining Contractual Life	8 years 1 month 9 days
Weighted average exercise price (in dollars per share)	$ 5.48
Number exercisable (in shares) | shares	41,951
Options exercisable weighted average exercise price (in dollars per share)	$ 5.47
$6.00 - 8.35
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price lower range (in dollars per share)	6.00
Exercise price upper range (in dollars per share)	$ 8.35
Number outstanding (in shares) | shares	130,000
Options Outstanding Weighted- Average Remaining Contractual Life	5 years 7 months 24 days
Weighted average exercise price (in dollars per share)	$ 7.19
Number exercisable (in shares) | shares	86,000
Options exercisable weighted average exercise price (in dollars per share)	$ 6.59