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Stock Options by Range of Exercise Prices (Detail) (USD $)
12 Months Ended
Jun. 30, 2014
Employee 2012 Stock Option Plan [Member]
Jun. 30, 2014
Employee 2012 Stock Option Plan [Member]
Exercise price range $ 4.88 - $ 6.31 [Member]
Jun. 30, 2014
NonEmployee 2012 Stock Option Plan [Member]
Jun. 30, 2014
NonEmployee 2012 Stock Option Plan [Member]
Exercise price range $ 4.88 [Member]
Dec. 31, 2013
2002 Employee Stock Option Plan [Member]
Dec. 31, 2013
2002 Employee Stock Option Plan [Member]
Exercise price range $ 5.22 - $ 6.62 [Member]
Dec. 31, 2013
2002 Employee Stock Option Plan [Member]
Exercise price range $11.16 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Range of exercise prices, lower limit   $ 4.88   $ 4.88   $ 5.22 $ 11.16
Range of exercise prices, upper limit   $ 6.31       $ 6.62  
Options Outstanding, Number outstanding 78,500 78,500 25,000 25,000 265,750 228,250 37,500
Options Outstanding, Weighted average remaining contractual life 9 years 3 months 18 days 9 years 3 months 18 days 9 years 2 months 12 days 9 years 2 months 12 days 1 year 9 months 18 days 1 year 9 months 18 days 1 year 8 months 12 days
Options Outstanding, weighted average exercise price $ 5.73 $ 5.73 $ 4.88 $ 4.88 $ 6.51 $ 5.75 $ 11.16
Options exercisable, Number exercisable 15,700 15,700 5,000 5,000      
Options exercisable, Weighted average exercise price $ 5.73 $ 5.73 $ 4.88 $ 4.88