Stock Options And Stock-Based Compensation (Tables)

9 Months Ended

Feb. 28, 2021

Share-based Payment Arrangement [Abstract]

Stock options outstanding

Outstanding Options						Exercisable Options
Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (yrs)		Number of Shares		Weighted Average Exercise Price
	22,500	$	1.70		6.10		22,500	$	1.70

Schedule of share-based compensation, restricted stock units award activity

	Number of Units			Weighted Average Price at Grant Date		Aggregate Intrinsic Value
Non-vested restricted stock units - May 31, 2020		55,147		$	3.28	$	180,882
Restricted stock units granted		62,881			4.62		290,529
Restricted stock units vested		(83,072	)		3.78		(313,976	)
Non-vested restricted stock units - February 28, 2021		34,956		$	4.50	$	157,435