Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Statements of Operations [Abstract]
Revenue, net	$ 15,242,383	$ 15,234,788
Cost of sales	12,640,900	12,715,192
Selling, general and administrative expenses	2,315,740	2,231,622
Operating expenses	14,956,640	14,946,814
Income from operations	285,743	287,974
Other income (expense):
Interest and dividend income	2,736	1,829
Unrealized gain (loss) on marketable securities, net.	3,440	(4,736)
Income before income taxes	291,919	285,067
Provision for income taxes	136,000	140,000
Consolidated net income	155,919	145,067
Less: Net income attributable to noncontrolling interest.	8,142	11,319
Net income attributable to TSR, Inc.	$ 147,777	$ 133,748
Net income per TSR, Inc. common share	$ 0.08	$ 0.07
Weighted average number of common shares outstanding	1,962,062	1,962,062