Annual report pursuant to Section 13 and 15(d)

Acquisition of Patents and Intangibles - Components (Details)

v3.21.2
Acquisition of Patents and Intangibles - Components (Details) - USD ($)
$ in Thousands
May 31, 2021
May 31, 2020
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross $ 6,446 $ 18,646
Accumulated amortization, net of impairment (4,793) (5,190)
Total amortizable intangible assets, net 1,653 13,456
Website development costs    
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross 20 20
Leronlimab P R O 140 Acquisition [Member]    
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross 3,500 3,500
Prosta Gene L L C Acquisition [Member]    
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross $ 2,926 $ 15,126