Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details)

v3.2.0.727
Stock Based Compensation (Details) - USD ($)
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Stock Based Compensation [Abstract]    
Reverse stock split 1-for-5  
Weighted Average Grant Date Fair Value [Roll Forward]    
Stock-based compensation expense $ 664,000 $ 352,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Number of outstanding options at end of period (in shares) 665,058  
Number of Exercisable at end of period (in shares) 289,379  
Exercise Price $0.75 - $1.50 [Member]    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Exercise Price Range, Lower Range Limit (in dollars per share) $ 0.75  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 1.50  
Number of outstanding options at end of period (in shares) 218,679  
Weighted Average Remaining Contractual Term 9 years 8 months 1 day  
Weighted Average Exercise Price (in dollars per share) $ 0.80  
Number of Exercisable at end of period (in shares) 15,000  
Weighted Average Exercise Price (in dollars per share) $ 1.35  
Exercise Price $1.99 - $3.22 [Member]    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Exercise Price Range, Lower Range Limit (in dollars per share) 1.99  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 3.22  
Number of outstanding options at end of period (in shares) 190,567  
Weighted Average Remaining Contractual Term 9 years 1 month 6 days  
Weighted Average Exercise Price (in dollars per share) $ 2.55  
Number of Exercisable at end of period (in shares) 77,817  
Weighted Average Exercise Price (in dollars per share) $ 2.46  
Exercise Price $3.35 - $6.00 [Member]    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Exercise Price Range, Lower Range Limit (in dollars per share) 3.35  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 6.00  
Number of outstanding options at end of period (in shares) 158,997  
Weighted Average Remaining Contractual Term 6 years 9 months 29 days  
Weighted Average Exercise Price (in dollars per share) $ 3.90  
Number of Exercisable at end of period (in shares) 99,747  
Weighted Average Exercise Price (in dollars per share) $ 3.89  
Exercise Price $11.70 - $17.80 [Member]    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Exercise Price Range, Lower Range Limit (in dollars per share) 11.70  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 17.80  
Number of outstanding options at end of period (in shares) 47,024  
Weighted Average Remaining Contractual Term 3 years 6 months 14 days  
Weighted Average Exercise Price (in dollars per share) $ 12.13  
Number of Exercisable at end of period (in shares) 47,024  
Weighted Average Exercise Price (in dollars per share) $ 12.13  
Exercise Price $21.00 - $34.20 [Member]    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Exercise Price Range, Lower Range Limit (in dollars per share) 21.00  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 34.20  
Number of outstanding options at end of period (in shares) 38,960  
Weighted Average Remaining Contractual Term 2 years 1 month 17 days  
Weighted Average Exercise Price (in dollars per share) $ 22.67  
Number of Exercisable at end of period (in shares) 38,960  
Weighted Average Exercise Price (in dollars per share) $ 22.67  
Exercise Price $41.40 - $41.45 [Member]    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Exercise Price Range, Lower Range Limit (in dollars per share) 41.40  
Exercise Price Range, Upper Range Limit (in dollars per share) $ 41.45  
Number of outstanding options at end of period (in shares) 10,831  
Weighted Average Remaining Contractual Term 5 months 5 days  
Weighted Average Exercise Price (in dollars per share) $ 41.40  
Number of Exercisable at end of period (in shares) 10,831  
Weighted Average Exercise Price (in dollars per share) $ 41.40  
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  
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 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 $ 775,000
Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value 67,920,000  
Exercisable, Intrinsic Value $ 200,000