Cash and Cash Equivalents (Tables)

3 Months Ended

Aug. 31, 2016

Cash and Cash Equivalents [Abstract]

Summary of cash and cash equivalents

	August 31,  2016		May 31,  2016
Cash in banks	$	3,996,593	$	3,974,007
Money market funds		540,133		540,150
	$	4,536,726	$	4,514,157