Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Income Tax (Details)

v3.21.1
Summary of Significant Accounting Policies - Income Tax (Details) - USD ($)
3 Months Ended 9 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2021
Feb. 29, 2020
Accounting Policies [Abstract]        
Federal statutory income tax rate, percent 21.00% 21.00% 21.00% 21.00%
Income tax expense $ 0 $ 0 $ 0 $ 0