Annual report pursuant to Section 13 and 15(d)

Intangible Assets, Net - Components (Details)

v3.22.2.2
Intangible Assets, Net - Components (Details) - USD ($)
$ in Thousands
May 31, 2022
May 31, 2021
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross $ 3,520 $ 6,446
Accumulated amortization, net of impairment (3,388) (4,793)
Total amortizable intangible assets, net 132 1,653
Website development costs    
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross 20 20
Leronlimab (PRO 140) patent    
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross $ 3,500 3,500
ProstaGene, LLC acquisition    
Asset Acquisition [Line Items]    
Finite-Lived Intangible Assets, Gross   $ 2,926