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Share-Based and Unit-Based Compensation - Schedule of Restricted Equity Plan (Details) - 2015 Plan - Restricted Equity Plan - $ / shares
shares in Thousands
9 Months Ended
Feb. 29, 2020
Nov. 30, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Number of Units, Released   (2,893)
Number of Shares, Ending balance 8,955 6,062
Weighted Average Grant Date Fair Value Per Unit, Released   $ 1.48
Weighted Average Grant Date Fair Value Per Unit, Ending balance $ 1.40 $ 1.49
Weighted Average Remaining Term (in years) 1 year 6 months 6 months