Summary of Significant Accounting Policies (Tables)

12 Months Ended

May 31, 2017

Summary of Significant Accounting Policies [Abstract]

Summary of cash and cash equivalents

	2017		2016
Cash in banks	$	4,634,245	$	3,974,007
Money market funds		840,731		540,150
Certificates of deposit		249,000		-
	$	5,723,976	$	4,514,157

Summary of assets measured at fair value on recurring basis

May 31, 2017	Level 1		Level 2		Level 3		Total
Certificates of Deposit	$	-	$	992,000	$	-	$	992,000
Equity Securities		28,888		-		-		28,888
	$	28,888	$	992,000	$	-	$	1,020,888
May 31, 2016		Level 1		Level 2		Level 3		Total
Certificates of Deposit	$	-	$	1,528,000	$	-	$	1,528,000
Equity Securities		25,272		-		-		25,272
	$	25,272	$	1,528,000	$	-	$	1,553,272

Summary of marketable securities

May 31, 2017	Amortized  Cost		Gross  Unrealized  Holding  Gains		Gross  Unrealized  Holding  Losses		Recorded  Value
Current
Certificates of Deposit	$	992,000	$	-	$	-	$	992,000
Equity Securities		16,866		12,022		-		28,888
	$	1,008,866	$	12,022	$	-	$	1,020,888
May 31, 2016
Current
Certificates of Deposit	$	1,528,000	$	-	$	-	$	1,528,000
Equity Securities		16,866		8,406		-		25,272
	$	1,544,866	$	8,406	$	-	$	1,553,272

Summary of useful lives of assets

Equipment	3 years
Furniture and fixtures	3 years
Automobiles	3 years
Leasehold improvements	Lesser of lease term or useful life