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Stock-Based Compensation (Tables)
3 Months Ended
Aug. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Schedule of Assumptions Used to Determine Grant Date Fair Value of Restricted Common Shares The following assumptions were used to determine the grant-date fair value and the derived service period for these restricted common shares:

Dividend yield

 

 

2.71

%

Expected volatility

 

 

41.50

%

Risk-free interest rate

 

 

0.32

%

 

Non-Qualified Stock Options  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Schedule of Assumptions Used to Determine Fair Value of Stock Options The following assumptions were used to value these stock options:

 

Dividend yield

 

 

2.94

%

Expected volatility

 

 

40.82

%

Risk-free interest rate

 

 

0.42

%

Expected term (years)

 

 

6.0