Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 3)

v2.4.0.6
Stock-Based Compensation (Details 3) (USD $)
 3 Months Ended 9 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Dec. 31, 2012
Dec. 31, 2011
Shares            
Outstanding at the end of the period (in shares) 3,550,000       3,550,000  
Share based compensation expenses $ 481,000   $ 404,000   $ 1,177,000 $ 1,266,000
Stock options
            
Shares            
Outstanding at the beginning of the period (in shares)         10,039,651  
Granted (in shares)   250,000   250,000 1,958,330  
Forfeited, cancelled or expired (in shares)         (206,216)  
Outstanding at the end of the period (in shares) 11,791,765       11,791,765  
Vested and expected to vest (in shares) 11,541,459       11,541,459  
Exercisable (in shares) 8,868,399       8,868,399  
Share based compensation expenses 300,000   200,000   700,000 700,000
Weighted Average Exercise Price            
Outstanding at the beginning of the period (in dollars per share)         $ 1.41  
Granted (in dollars per share)         $ 1.01  
Forfeited, cancelled or expired (in dollars per share)         $ 2.16  
Outstanding at the end of the period (in dollars per share) $ 1.33       $ 1.33  
Vested and expected to vest (in dollars per share) $ 1.34       $ 1.34  
Exercisable (in dollars per share) $ 1.40       $ 1.40  
Weighted Average Remaining Contractual Term (in years)            
Outstanding at the end of the period         5 years 9 months 29 days  
Vested and expected to vest         5 years 9 months  
Exercisable         4 years 9 months 7 days  
Aggregate Intrinsic Value            
Outstanding at the end of the period 132,100       132,100  
Vested or expected to vest 132,096       132,096  
Exercisable 127,225       127,225  
Additional disclosure            
Weighted average grant date fair value (in dollars per share)     $ 0.66   $ 1.01 $ 1.71
Total intrinsic value of option exercised during the period           6,200
Unrecognized compensation cost $ 1,900,000       $ 1,900,000  
Weighted average period for recognizing compensation cost         2 years 10 months 24 days  
Weighted-average assumptions used to calculate estimated fair value of each stock option            
Risk-free interest rates (as a percent)         0.80% 1.90%
Expected lives (in years)         5 years 8 months 12 days 5 years
Expected volatility (as a percent)         79.80% 89.00%