Summary of Stock Option Plans (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2012 Stock Options	Jun. 30, 2012 Stock Options	Jun. 30, 2011 Stock Options
Number of Shares
Outstanding at beginning of period		2,185	2,293
Granted		271
Exercised		(24)	(72)
Cancelled		(160)	(36)
Outstanding at end of period		2,272	2,185	2,293
Weighted Average Exercise Price
Outstanding at beginning of period		$ 14.46	$ 14.35
Granted		$ 4.75
Exercised		$ 7.16	$ 6.48
Cancelled		$ 18.10	$ 23.70
Outstanding at end of period		$ 13.12	$ 14.46	$ 14.35
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period		3 years 5 months 23 days	2 years 10 months 21 days	3 years 10 months 17 days