Quarterly report pursuant to Section 13 or 15(d)

Convertible Instruments and Accrued Interest - Components (Details)

v3.22.1
Convertible Instruments and Accrued Interest - Components (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Feb. 28, 2022
Feb. 28, 2021
Debt Instrument [Line Items]        
Outstanding balance, beginning     $ 64,754  
Amortization of issuance discount and costs     2,452  
Interest expense     4,299  
Cash repayments     (42,073)  
Loss on extinguishment of convertible notes $ 3,109 $ 7,625 11,072 $ 11,794
Outstanding balance, ending 40,504   40,504  
Long-term Convertible Note - November 2020 Note        
Debt Instrument [Line Items]        
Outstanding balance, beginning     13,554  
Amortization of issuance discount and costs 0   98  
Interest expense     192  
Cash repayments     (18,495)  
Loss on extinguishment of convertible notes     4,651  
Long-term Convertible Note - April 2, 2021 Note        
Debt Instrument [Line Items]        
Outstanding balance, beginning     25,715  
Amortization of issuance discount and costs 200   1,045  
Interest expense     1,839  
Cash repayments     (23,578)  
Loss on extinguishment of convertible notes     6,421  
Outstanding balance, ending 11,442   11,442  
Long-term Convertible Note - April 23, 2021 Note        
Debt Instrument [Line Items]        
Outstanding balance, beginning     25,485  
Amortization of issuance discount and costs 400   1,309  
Interest expense     2,268  
Outstanding balance, ending $ 29,062   $ 29,062