Common Stock Compensation - Stock Options by Exercise Price (Details)	9 Months Ended
	Mar. 31, 2018 $ / 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)	$ 16.00
Number outstanding (in shares) | shares	362,171
Options Outstanding Weighted- Average Remaining Contractual Life	6 years 8 months 26 days
Weighted average exercise price (in dollars per share)	$ 5.48
Number exercisable (in shares) | shares	175,817
Options exercisable weighted average exercise price (in dollars per share)	$ 4.84
$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	93,950
Options Outstanding Weighted- Average Remaining Contractual Life	3 years 4 months 17 days
Weighted average exercise price (in dollars per share)	$ 3.06
Number exercisable (in shares) | shares	89,217
Options exercisable weighted average exercise price (in dollars per share)	$ 3.07
$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	267,621
Options Outstanding Weighted- Average Remaining Contractual Life	7 years 11 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)	16.00
Exercise price upper range (in dollars per share)	$ 16.00
Number outstanding (in shares) | shares	600
Options Outstanding Weighted- Average Remaining Contractual Life	7 years 7 days
Weighted average exercise price (in dollars per share)	$ 16.00
Number exercisable (in shares) | shares	600
Options exercisable weighted average exercise price (in dollars per share)	$ 16.00