Accounting for Stock-Based Compensation (Tables)

3 Months Ended

Aug. 31, 2018

Accounting for Stock-Based Compensation

Schedule of assumptions used in the Black-Scholes option pricing model to estimate the fair value of stock option grant

Risk-free interest rate	2.7	%
Expected volatility of common stock	30.8	%
Dividend yield	0.6	%
Expected option term in years	4.5