Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Options (Details)

v3.8.0.1
Stock-Based Compensation - Stock Options (Details) - USD ($)
 3 Months Ended 6 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Additional disclosure        
Share based compensation expenses $ 153,000 $ 241,000 $ 307,000 $ 479,000
Stock options        
Shares        
Outstanding at the beginning of the period (in shares)     314,537  
Granted (in shares) 0   0  
Forfeited, cancelled or expired (in shares)     (4,000)  
Outstanding at the end of the period (in shares) 310,537   310,537  
Options fully vested and those expected to vest (in shares) 310,537   310,537  
Options exercisable 245,693   245,693  
Weighted Average Exercise Price        
Outstanding at the beginning of the period (in dollars per share)     $ 15.48  
Forfeited, cancelled or expired (in dollars per share)     24.25  
Outstanding at the end of the period (in dollars per share) $ 15.37   15.37  
Options fully vested and those expected to vest (in dollars per share) 15.37   15.37  
Exercisable (in dollars per share) $ 18.98   $ 18.98  
Weighted Average Remaining Contractual Term (in years)        
Outstanding at the end of the period     4 years 10 months 24 days  
Options fully vested and those expected to vest     4 years 10 months 24 days  
Exercisable     3 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)       1.30%
Expected lives (in years)       5 years 8 months 12 days
Expected volatility (as a percent)       133.90%
Weighted average grant date fair value of options granted during the period (in dollars per share)       $ 1.52
Additional disclosure        
Total compensation cost related to unvested stock option awards $ 100,000   $ 100,000  
Share based compensation expenses $ 8,000 $ 3,000 $ 17,000 $ 3,000
Weighted average period for recognizing compensation cost     2 years 10 months 24 days