Employee Benefit Plans (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2019	Jun. 30, 2018
Number of Shares
Options outstanding at June 30, 2018	2,193
Granted	852
Exercised	(216)
Cancelled	(87)
Options outstanding at March 31, 2019	2,742	2,193
Vested and expected to vest at March 31, 2019	2,742
Exercisable at March 31, 2019	1,974
Weighted-Average Exercise Price Per Share
Options outstanding at June 30, 2018	$ 3.88
Granted	6.40
Exercised	3.73
Cancelled	6.01
Options outstanding at March 31, 2019	4.60	$ 3.88
Vested and expected to vest at March 31, 2019	4.60
Exercisable at March 31, 2019	$ 3.90
Weighted-Average Remaining Contractual Term
Options outstanding	3 years 5 months 23 days	2 years 10 months 24 days
Vested and expected to vest at March 31, 2019	3 years 5 months 23 days
Exercisable at March 31, 2019	2 years 3 months 29 days
Aggregate Intrinsic Value
Options outstanding	$ 7,947	$ 8,996
Vested and expected to vest at March 31, 2019	7,947
Exercisable at March 31, 2019	$ 7,097