Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Narrative (Details)

v3.20.1
Fair Value Measurements - Narrative (Details) - USD ($)
 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Sep. 28, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Convertible notes, net of debt issuance costs and discounts of $0 and $1,827, respectively $ 18,505,000 $ 0    
Change in fair value of convertible note embedded derivative liability $ 0 $ (1,008,000) $ (7,559,000)  
Stock price (in dollars per share) $ 4.18 $ 3.50 $ 2.01  
Loss on extinguishment of debt $ 0 $ (431,000) $ (1,785,000)  
Change in fair value of convertible note embedded derivative liability $ 9,580,000 4,875,000 3,208,000  
Convertible Notes Payable        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt discount   0   $ 4,916,000
Debt face amount       $ 16,000,000
Interest rate       8.75%
Issuance of common stock related to debt   5,700,000 $ 10,300,000  
Convertible notes, net of debt issuance costs and discounts of $0 and $1,827, respectively   0    
Debt issuance costs   $ 0