XML 28 R34.htm IDEA: XBRL DOCUMENT v3.20.1
Stock-Based Compensation (Tables)
9 Months Ended
Feb. 29, 2020
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

 

 

2.69

%

Expected volatility

 

 

34.90

%

Risk-free interest rate

 

 

1.60

%

 

Non-Qualified Stock Options  
Schedule of Assumptions Used to Determine Fair Value of Stock Options The following assumptions were used to value these stock options:

 

Dividend yield

 

 

2.42

%

Expected volatility

 

 

33.10

%

Risk-free interest rate

 

 

1.86

%

Expected term (years)

 

 

6.0