Stock Incentive Plan and Employee Stock Purchase Plan - Schedule of Option Activity Under the Company's Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Options Outstanding
Options granted (in shares)	0		0
Stock options
Options Outstanding
Balance at the beginning of the year (in shares)	2,463,000	2,377,000	2,537,000
Options granted (in shares)	795,000	760,000
Options exercised (in shares)	(109,000)	(113,000)	(59,000)
Options forfeited/expired (in shares)	(465,000)	(561,000)	(101,000)
Balance at the end of the year (in shares)	2,684,000	2,463,000	2,377,000	2,537,000
Vested or Expected to vest at the end of the year (in shares)	2,684,000
Exercisable at the end of the year (in shares)	1,496,000
Weighted Average Exercise Price
Balance at the beginning of the year (in dollars per share)	$ 6.05	$ 8.00	$ 7.91
Options granted (in dollars per share)	4.12	5.05
Options exercised (in dollars per share)	4.02	5.18	4.89
Options forfeited/expired (in dollars per share)	7.76	13.38	7.53
Balance at the end of the year (in dollars per share)	5.26	$ 6.05	$ 8.00	$ 7.91
Vested or Expected to vest at the end of the year (in dollars per share)	5.26
Exercisable at the end of the year (in dollars per share)	$ 5.92
Weighted Average Remaining Contractual Life (In Years)
Balance	6 years 1 month 27 days	5 years 5 months 1 day	3 years 11 months 19 days	5 years 1 month 6 days
Vested or Expected to vest at the end of the year	6 years 1 month 27 days
Exercisable at the end of the year	3 years 10 months 25 days
Aggregate Intrinsic Value (in thousands)
Balance at the beginning of the year	$ 60	$ 191	$ 452	$ 1,862
Vested or Expected to vest at the end of the year	60
Exercisable at the end of the year	$ 9