Note 19 - Subsequent Events

3 Months Ended

Aug. 31, 2015

Subsequent Events [Abstract]

Subsequent Events [Text Block]

19. SUBSEQUENT EVENTS

On September 24, 2015, the Company’s Compensation Committee approved a modification to its 2011 Equity Incentive Plan effective November 1, 2015.  This modification adds an alternative service-based vesting opportunity to all previously granted, but currently unvested, options having solely performance-based or market-based vesting conditions.  These awards will vest over an approximately three-year period of time.