Stock-Based Compensation (Summarized Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2018	Jun. 30, 2017
Stock-Based Compensation [Abstract]
Outstanding, Number of shares, Beginning Balance	809,274	846,607	846,607
Granted, Number of shares	600,000
Forfeitures, Number of shares	(278,386)	(37,333)
Outstanding, Number of shares, Ending Balance	1,130,888	809,274	809,274	846,607
Exercisable, Number of Shares	547,888
Vested and expected to vest, Number of shares	1,130,888
Outstanding, Weighted average exercise price, Beginning Balance	$ 13.99	$ 13.87	$ 13.87
Granted, Weighted average exercise price	6.20
Forfeitures, Weighted average exercise price	19.16	11.23
Outstanding, Weighted average exercise price, Ending Balance	8.60	$ 13.99	$ 13.99	$ 13.87
Exercisable, Weighted average exercise price	11.13
Vested and expected to vest, Weighted average exercise price	$ 8.60
Outstanding, Weighted average remaining contractual term (in years)	6 years 3 months 29 days	2 years 11 months 1 day	2 years 8 months 1 day	3 years 9 months 18 days
Granted, Weighted average remaining contractual term (in years)	10 years
Exercisable, Weighted average remaining contractual term (in years)	2 years 11 months 19 days
Vested and expected to vest, Weighted average remaining contractual term (in years)	6 years 3 months 29 days
Outstanding, Aggregate intrinsic value, Beginning Balance	$ 370	$ 486	$ 486
Granted, Aggregate intrinsic value	$ 1,212
Outstanding, Aggregate intrinsic value, Ending Balance		$ 427	$ 370	$ 486
Outstanding, Weighted average grant date fair value, Beginning Balance	$ 4.20	$ 4.21	$ 4.21
Granted, Weighted average grant date fair value	2.02
Forfeitures, Weighted average grant date fair value	5.00	4.55
Outstanding, Weighted average grant date fair value, Ending Balance	$ 2.70	$ 4.20	$ 4.20	$ 4.21