Accounting for Stock-Based Compensation (Tables)

3 Months Ended

Aug. 31, 2017

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	1.8	%
Expected volatility of common stock	31.7	%
Dividend yield	0.9	%
Expected option term in years	4.3