Stock-Based Compensation (Detail) - Stock Option Activity - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Number of Options (in shares):
Beginning balance	1,546,500
Granted	126,000
Exercised	0
Expired or forfeited	(264,250)
Ending balance	1,408,250
Exercisable	1,408,250
Weighted-Average Exercise Price (in dollars per share):
Beginning balance	$ 11.62
Granted	2.44
Exercised	0.00
Expired or forfeited	15.02
Ending balance	10.16
Exercisable	$ 10.16
Outstanding, Weighted Average Remaining Contractual Term (in years)	4 years 1 month 20 days
Exercisable, Weighted Average Remaining Contractual Term (in years)	4 years 1 month 20 days
Outstanding, Aggregate Intrinsic Value	$ 0
Exercisable, Aggregate Intrinsic Value	$ 0