Annual report pursuant to Section 13 and 15(d)

Convertible Instruments - Components (Details)

v3.21.2
Convertible Instruments - Components (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 23, 2021
Apr. 02, 2021
Nov. 10, 2020
Jul. 29, 2020
Mar. 31, 2020
Jul. 27, 2020
Nov. 30, 2020
May 31, 2021
May 31, 2020
May 31, 2019
Debt Instrument [Line Items]                    
Consideration received               $ 100,000 $ 15,000 $ 14,877
Accrued interest               4,387 7,330 950
Loss on extinguishment of convertible notes               19,896 0 $ 1,520
Long-term Convertible Note-March 2020 Note                    
Debt Instrument [Line Items]                    
Outstanding balance, beginning               15,467    
Consideration received         $ 15,000          
Amortization of issuance discount and costs               1,369    
Accrued interest               480    
Cash repayments             $ (950) (950)    
Note conversions into common stock           $ (9,500)   (9,538)    
Fair market value of shares exchanged for repayment               (10,997)    
Loss on extinguishment of convertible notes               4,169    
Outstanding balance, ending                 $ 15,467  
Long-term Convertible Note-July 2020 Note                    
Debt Instrument [Line Items]                    
Consideration received       $ 25,000       25,000    
Amortization of issuance discount and costs               1,097    
Accrued interest               1,901    
Fair market value of shares exchanged for repayment               (37,298)    
Loss on extinguishment of convertible notes               9,300    
Long-term Convertible Note - November 2020 Note                    
Debt Instrument [Line Items]                    
Consideration received     $ 25,000         25,000    
Amortization of issuance discount and costs               740    
Accrued interest               1,258    
Fair market value of shares exchanged for repayment               (19,870)    
Loss on extinguishment of convertible notes               6,427    
Outstanding balance, ending               13,554    
Long-term Convertible Note - April 2, 2021 Note                    
Debt Instrument [Line Items]                    
Consideration received   $ 25,000           25,000    
Amortization of issuance discount and costs               268    
Accrued interest               447    
Outstanding balance, ending               25,715    
Long-term Convertible Note - April 23, 2021 Note                    
Debt Instrument [Line Items]                    
Consideration received $ 25,000             25,000    
Amortization of issuance discount and costs               182    
Accrued interest               302    
Outstanding balance, ending               $ 25,485