Stock Based Compensation - Summary of Stock-Based Compensation Activity (Detail) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options outstanding, beginning of period, Shares	740,256
Forfeited, Shares	(42,800)
Expired, Shares	(40,435)
Exercised, Shares	(106,500)	0
Granted, Shares	284,000
Options outstanding, end of period, Shares	834,521	740,256
Options exercisable, end of period, Shares	428,024
Options outstanding, beginning of period, Weighted-Average Exercise Price	$ 4.15
Forfeited, Weighted-Average Exercise Price	$ 2.01
Expired, Weighted-Average Exercise Price	$ 8.63
Exercised, Weighted-Average Exercise Price	$ 1.84
Granted, Weighted-Average Exercise Price	$ 2.26
Options outstanding, end of period, Weighted-Average Exercise Price	$ 3.67	$ 4.15
Options exercisable, end of period, Weighted-Average Exercise Price	$ 4.53