Stock-Based Compensation - Summary of Stock Option Plans (Detail) (Stock Options, USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Stock Options
Number of Shares
Outstanding at beginning of period	2,185,000	2,293,000
Granted	271,000	0
Exercised	(74,000)	(72,000)
Cancelled	(312,000)	(36,000)
Outstanding at end of period	2,070,000	2,185,000	2,293,000
Vested and expected to vest at end of period	2,060,000
Exercisable at end of period	1,955,000
Weighted Average Exercise Price
Outstanding at beginning of period	$ 14.46	$ 14.35
Granted	$ 4.75	$ 0
Exercised	$ 5.88	$ 6.48
Cancelled	$ 14.83	$ 23.70
Outstanding at end of period	$ 13.44	$ 14.46	$ 14.35
Vested and expected to vest at end of period	$ 13.47
Exercisable at end of period	$ 13.93
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period	2 years 7 months 6 days	2 years 10 months 21 days	3 years 10 months 17 days
Vested and expected to vest at end of period	2 years 6 months 29 days
Exercisable at end of period	2 years 3 months 14 days
Aggregate Intrinsic Value
Outstanding at end of period	$ 1,668
Vested and expected to vest at end of period	1,628
Exercisable at end of period	$ 1,175