XML 50 R40.htm IDEA: XBRL DOCUMENT v3.21.1
Income Taxes (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Feb. 28, 2021
Feb. 28, 2021
May 31, 2020
Income Tax Disclosure [Abstract]      
Other long-term liabilities $ 0 $ 0 $ 0
Effective tax rate (15.40%) (0.10%)