Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Rollforward (Details)

v3.19.1
Fair Value Measurements - Rollforward (Details)
$ in Thousands
 12 Months Ended
Mar. 31, 2019
USD ($)
Convertible note embedded derivative liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 $ 4,676
Balance at March 31, 2019 0
Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 3,980
Balance at March 31, 2019 8,013
Level 3 | Convertible note embedded derivative liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 4,676
Balance at March 31, 2019 0
Level 3 | Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 3,980
Balance at March 31, 2019 8,013
Convertible note embedded derivative liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 4,676
Balance at March 31, 2019 0
Convertible note embedded derivative liability | Level 3 | Convertible note embedded derivative liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 4,676
Change in fair value 1,008
De-recognition on extinguishment or conversion (5,684)
Balance at March 31, 2019 0
Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 3,980
Balance at March 31, 2019 8,013
Warrant liability | Level 3 | Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at March 31, 2018 3,980
Change in fair value 4,875
De-recognition on extinguishment or conversion $ (842)