Stock Options by Range of Exercise Prices (Detail) (2002 Employee Stock Option Plan [Member], USD $)	12 Months Ended
	Jun. 30, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding, end of period, weighted average remaining contractual life	2 years 4 months 24 days
Exercise price range $1.62 - $ 4.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit	$ 1.62
Range of exercise prices, upper limit	$ 4.00
Options Outstanding, Number outstanding	285,390
Options Outstanding, Weighted average remaining contractual life	9 months 18 days
Options Outstanding, weighted average exercise price	$ 1.97
Options exercisable, Number exercisable	285,390
Options exercisable, Weighted average exercise price	$ 1.97
Exercise price range $4.01 - $ 7.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit	$ 4.01
Range of exercise prices, upper limit	$ 7.50
Options Outstanding, Number outstanding	328,250
Options Outstanding, Weighted average remaining contractual life	3 years 9 months 18 days
Options Outstanding, weighted average exercise price	$ 5.29
Options exercisable, Number exercisable	328,250
Options exercisable, Weighted average exercise price	$ 5.29
Exercise price range $7.51 - $11.16 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit	$ 7.51
Range of exercise prices, upper limit	$ 11.16
Options Outstanding, Number outstanding	37,500
Options Outstanding, Weighted average remaining contractual life	3 years
Options Outstanding, weighted average exercise price	$ 11.16
Options exercisable, Number exercisable	37,500
Options exercisable, Weighted average exercise price	$ 11.16