Quarterly report pursuant to Section 13 or 15(d)

Debt - Interest Income (Expense) (Details)

v3.19.3
Debt - Interest Income (Expense) (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Debt Instrument [Line Items]        
Interest income $ 41,000 $ (135,000) $ 59,000 $ (454,000)
Non-cash interest expense     0 188,000
Interest expense, total   135,000 0 454,000
Convertible notes        
Debt Instrument [Line Items]        
Interest expense, debt   108,000 0 266,000
Non-cash interest expense   $ 27,000 $ 0 $ 188,000