Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Stock Options (Details)

v3.20.1
Stockholders' Equity - Stock Options (Details) - USD ($)
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Shares    
Granted (in shares) 0  
Weighted-average assumptions used to calculate estimated fair value of each warrant    
Risk-free interest rates (as a percent) 2.50%  
Contractual term (in years) 5 years  
Expected volatility (as a percent) 76.00%  
Additional disclosures    
Stock-based compensation expense $ 913,000 $ 907,000
Stock options    
Shares    
Outstanding at the beginning of the period (in shares) 17,499  
Forfeited, cancelled or expired (in shares) (6,250)  
Outstanding at the end of the period (in shares) 11,249 17,499
Weighted Average Exercise Price    
Outstanding at the beginning of the period (in dollars per share) $ 209.36  
Forfeited, cancelled or expired (in dollars per share) 198.21  
Outstanding at the end of the period (in dollars per share) $ 215.56 $ 209.36
Fully vested and expected to vest    
Shares (in shares) 11,249  
Weighted average exercise price (in dollars per share) $ 215.56  
Weighted average remaining contractual term 2 years 1 month 6 days  
Additional disclosures    
Total compensation cost related to unvested stock option awards $ 0  
Weighted average remaining contractual term, options outstanding 2 years 1 month 6 days  
Shares, options exercisable (in shares) 11,249  
Weighted average exercise price, options exercisable (in dollars per share) $ 215.56  
Weighted average remaining contractual term, options exercisable 2 years 1 month 6 days