Summary of Stock Option Plans (Detail) (Stock Options, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Stock Options
Number of Shares
Outstanding at beginning of period	2,293	2,612
Granted		77
Exercised	(72)	(315)
Cancelled	(36)	(81)
Outstanding at end of period	2,185	2,293	2,612
Vested and expected to vest at end of period	2,184
Exercisable at end of period	2,102
Weighted Average Exercise Price
Outstanding at beginning of period	$ 14.35	$ 13.70
Granted		$ 13.70
Exercised	$ 6.48	$ 8.25
Cancelled	$ 23.70	$ 16.41
Outstanding at end of period	$ 14.46	$ 14.35	$ 13.70
Vested and expected to vest at end of period	$ 14.46
Exercisable at end of period	$ 14.66
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period	2 years 10 months 21 days	3 years 10 months 17 days	4 years 8 months 9 days
Vested and expected to vest at end of period	2 years 10 months 17 days
Exercisable at end of period	2 years 10 months 6 days
Aggregate Intrinsic Value
Outstanding at end of period	$ 3,489
Vested and expected to vest at end of period	3,486
Exercisable at end of period	$ 3,173