Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Options (Details)

v3.5.0.2
Stock-Based Compensation - Stock Options (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Mar. 31, 2016
Additional disclosure          
Share based compensation expenses $ 241,000 $ 385,000 $ 479,000 $ 848,000  
Stock options          
Shares          
Outstanding at the beginning of the period (in shares)     467,631    
Granted (in shares)     88,930    
Forfeited, cancelled or expired (in shares)     (91,295)    
Outstanding at the end of the period (in shares) 465,266   465,266   467,631
Options fully vested and those expected to vest (in shares) 465,266   465,266    
Options exercisable 376,336   376,336    
Weighted Average Exercise Price          
Outstanding at the beginning of the period (in dollars per share)     $ 22.68    
Granted (in dollars per share)     1.70    
Forfeited, cancelled or expired (in dollars per share)     26.00    
Outstanding at the end of the period (in dollars per share) $ 18.02   18.02   $ 22.68
Options fully vested and those expected to vest (in dollars per share) 18.02   18.02    
Exercisable (in dollars per share) $ 21.87   $ 21.87    
Weighted Average Remaining Contractual Term (in years)          
Outstanding at the end of the period     4 years 1 month 6 days    
Options fully vested and those expected to vest     4 years 1 month 6 days    
Exercisable     2 years 8 months 12 days    
Weighted-average assumptions used to calculate estimated fair value of each stock option          
Risk-free interest rates (as a percent) 1.30%   1.30% 1.50%  
Expected lives (in years) 5 years 8 months 12 days   5 years 8 months 12 days 5 years 8 months 12 days  
Expected volatility (as a percent) 133.90%   133.90% 59.00%  
Weighted average grant date fair value of options granted during the period (in dollars per share) $ 1.52   $ 1.52 $ 6.80  
Additional disclosure          
Total compensation cost related to unvested stock option awards $ 100,000   $ 100,000    
Voluntarily terminated unvested stock options (in shares)         65,508
Share based compensation expenses $ 3,000 $ 100,000 $ 3,000 $ 300,000  
Weighted average period for recognizing compensation cost     3 years 10 months 24 days