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7. STOCK- BASED COMPENSATION (Details 2) (USD $)
 3 Months Ended
Sep. 30, 2014
Mar. 31, 2014
Options outstanding by exercise price    
Exercise Price (in dollars per share) $ 5.16 $ 5.13
Number of Shares Underlying Options Outstanding (in shares) 6,605,098  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 5.16  
Options Outstanding, Weighted Average Remaining Contractual Life 5 years 10 months 21 days  
Options Exercisable, Number Vested and Exercisable (in shares) 4,188,255  
Exercise Price Range From Dollars 2.43 To Dollars 3.43 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 2.43  
Exercise Price, high end of range (in dollars per share) $ 3.43  
Number of Shares Underlying Options Outstanding (in shares) 917,384  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 3.16  
Options Outstanding, Weighted Average Remaining Contractual Life 4 years 4 months 6 days  
Options Exercisable, Number Vested and Exercisable (in shares) 917,384  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 3.16  
Exercised Price Range From Dollars 3.75 To Dollars 4.00 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 3.75  
Exercise Price, high end of range (in dollars per share) $ 4.00  
Number of Shares Underlying Options Outstanding (in shares) 812,779  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 3.96  
Options Outstanding, Weighted Average Remaining Contractual Life 4 years 5 months 16 days  
Options Exercisable, Number Vested and Exercisable (in shares) 812,779  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 3.96  
Exercise Price Range Dollars 4.17 To Dollars 4.81 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 4.17  
Exercise Price, high end of range (in dollars per share) $ 4.81  
Number of Shares Underlying Options Outstanding (in shares) 812,205  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 4.39  
Options Outstanding, Weighted Average Remaining Contractual Life 5 years 10 months 6 days  
Options Exercisable, Number Vested and Exercisable (in shares) 419,494  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 4.39  
ExercisePrice Range From Dollars 4.90 To Dollars 5.23 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 4.90  
Exercise Price, high end of range (in dollars per share) $ 5.23  
Number of Shares Underlying Options Outstanding (in shares) 789,563  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 5.11  
Options Outstanding, Weighted Average Remaining Contractual Life 8 years 10 months 2 days  
Options Exercisable, Number Vested and Exercisable (in shares) 132,396  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 4.90  
Exercise Price Range Dollars 5.41 [Member]
    
Options outstanding by exercise price    
Exercise Price (in dollars per share) $ 5.41  
Number of Shares Underlying Options Outstanding (in shares) 30,000  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 5.41  
Options Outstanding, Weighted Average Remaining Contractual Life 9 years 10 months 17 days  
Exercise Price Range Dollars 5.50 [Member]
    
Options outstanding by exercise price    
Exercise Price (in dollars per share) $ 5.50  
Number of Shares Underlying Options Outstanding (in shares) 783,433  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 5.50  
Options Outstanding, Weighted Average Remaining Contractual Life 2 years 1 month 17 days  
Options Exercisable, Number Vested and Exercisable (in shares) 783,433  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 5.50  
Exercise Price Range from Dollars 5.59 to Dollars 5.76 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 5.59  
Exercise Price, high end of range (in dollars per share) $ 5.76  
Number of Shares Underlying Options Outstanding (in shares) 675,410  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 5.70  
Options Outstanding, Weighted Average Remaining Contractual Life 7 years 7 days  
Options Exercisable, Number Vested and Exercisable (in shares) 259,146  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 5.69  
Exercise Price Range from Dollars 6.00 to Dollars 6.54 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 6.00  
Exercise Price, high end of range (in dollars per share) $ 6.54  
Number of Shares Underlying Options Outstanding (in shares) 798,358  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 6.32  
Options Outstanding, Weighted Average Remaining Contractual Life 6 years 7 months 28 days  
Options Exercisable, Number Vested and Exercisable (in shares) 384,692  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 6.19  
Exercise Price Range From Dollars 6.61 To Dollars 6.86 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 6.61  
Exercise Price, high end of range (in dollars per share) $ 6.86  
Number of Shares Underlying Options Outstanding (in shares) 666,153  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 6.77  
Options Outstanding, Weighted Average Remaining Contractual Life 8 years 4 months 21 days  
Options Exercisable, Number Vested and Exercisable (in shares) 210,023  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 6.78  
Exercise Price Range from Dollars 7.00 to Dollars 9.20 [Member]
    
Options outstanding by exercise price    
Exercise Price, low end of range (in dollars per share) $ 7.00  
Exercise Price, high end of range (in dollars per share) $ 9.20  
Number of Shares Underlying Options Outstanding (in shares) 319,813  
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 7.78  
Options Outstanding, Weighted Average Remaining Contractual Life 6 years 7 days  
Options Exercisable, Number Vested and Exercisable (in shares) 268,908  
Options Exercisable, Weighted Average Exercise Price (in dollars per share) $ 7.51