Registration of securities issued in business combination transactions

Stock Based Compensation (Details)

v3.2.0.727
Stock Based Compensation (Details) - USD ($)
 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Reverse stock split 1-for-5  
Weighted Average Grant Date Fair Value [Roll Forward]    
Stock-based compensation expense $ 664,000 $ 352,000
Stock Option and Warrants [Member]    
Options and Warrants Outstanding [Roll Forward]    
Outstanding, Number, Beginning Balance (in shares) 371,759  
Granted (in shares) 352,747  
Forfeited (in shares) (32,848)  
Expired (in shares) (26,600)  
Outstanding, Number, Ending Balance (in shares) 665,058 371,759
Weighted Average Exercise Price [Roll Forward]    
Beginning Balance (in dollars per share) $ 7.89  
Granted (in dollars per share) 1.29  
Forfeited (in dollars per share) 2.87  
Expired (in dollars per share) 4.01  
Ending Balance (in dollars per share) $ 4.79 $ 7.89
Options and Warrants Additional Disclosures [Abstract]    
Vested and Expected to Vest, Outstanding, Number (in shares) 664,783  
Exercisable, Number (in shares) 289,379  
Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price (in dollars per share) $ 4.79  
Exercisable, Weighted Average Exercise Price (in dollars per share) $ 8.65  
Options, Weighted Average Remaining Contractual Term 7 years 9 months 18 days 7 years 7 months 2 days
Exercisable, Weighted Average Remaining Contractual Term 6 years 4 days  
Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 7 years 9 months 18 days  
Options, Outstanding, Intrinsic Value $ 67,951,000 $ 77,500
Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value 67,920,000  
Exercisable, Intrinsic Value $ 20,000  
Restricted Stock Units (RSUs) [Member]    
Restricted Stock Units [Roll Forward]    
Balance at beginning of period (in shares) 129,070  
Granted ( in shares) 150,000  
Forfeited (in shares) (10,000)  
Vested (in shares) (269,070)  
Balance at end of period (in shares) 0 129,070
Weighted Average Grant Date Fair Value [Roll Forward]    
Balance at beginning of period (in dollars per share) $ 2.77  
Granted (in dollars per share) 1.54 $ 3.22
Forfeited (in dollars per share) 3.75  
Vested (in dollars per share) 2.05  
Balance at end of period (in dollars per share) $ 0 2.77
Total compensation cost not yet recognized $ 0  
Compensation cost recognized $ 180,000  
Stock Options [Member]    
Options and Warrants Additional Disclosures [Abstract]    
Options, Weighted Average Grant Date Fair Value (in dollars per share) $ 0.87 $ 3.06
Fair Value Assumptions and Methodology [Abstract]    
Expected life (years) 6 years 6 years
Volatility, Minimum (in hundredths) 141.73% 151.81%
Volatility, Maximum (in hundredths) 151.70% 152.95%
Risk-free interest rate, Minimum (in hundredths) 1.63% 1.30%
Risk-free interest rate, Maximum (in hundredths) 1.75% 1.72%
Dividend yield (in hundredths) 0.00% 0.00%
Weighted Average Grant Date Fair Value [Roll Forward]    
Total compensation cost not yet recognized $ 411,000  
Compensation cost, Period for recognition 1 year 7 months 24 days