Stock Option Activity (Detail) (USD $)	9 Months Ended
	Mar. 31, 2014
Stock options
Beginning Balance	635,094
Options granted	381,839
Options forfeited or expired	(833)
Ending balance	1,016,100
Exercisable at end of period	271,090
Weighted- Average Exercise Price
Beginning Balance	$ 8.26
Options granted	$ 7.58
Options forfeited or expired	$ 37.80
Ending balance	$ 7.98
Exercisable at end of period	$ 9.17
Weighted average remaining contractual term
Beginning Balance	3 years 6 months
Options granted	4 years 3 months 18 days
Ending balance	3 years 8 months 12 days
Exercisable at end of period	2 years 8 months 12 days
Aggregate intrinsic value
Outstanding at beginning of period	$ 2,204,000
Options granted	1,357,000
Options forfeited or expired
Outstanding at end of period	3,561,000
Exercisable at end of period	$ 880,000