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 |
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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