Summary of Stock-Based Compensation Activity (Detail) (USD $)	12 Months Ended
	Jun. 30, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, beginning of year, Shares	613,338
Forfeited, Shares	(20,576)
Expired, Shares	(18,006)
Exercised, Shares
Granted, Shares	165,500
Options outstanding, end of year, Shares	740,256
Options exercisable, end of year, Shares	398,082
Options outstanding, beginning of year, Weighted-Average Exercise Price	$ 5.07
Forfeited, Weighted-Average Exercise Price	$ 8.28
Expired, Weighted-Average Exercise Price	$ 7.13
Exercised, Weighted-Average Exercise Price
Granted, Weighted-Average Exercise Price	$ 1.59
Options outstanding, end of year, Weighted-Average Exercise Price	$ 4.15
Options exercisable, end of year, Weighted-Average Exercise Price	$ 5.69