Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2015	Nov. 30, 2014
Statements Of Operations [Abstract]
Revenue, net	$ 15,185,006	$ 14,533,801	$ 30,419,794	$ 28,219,614
Cost of sales	12,679,391	12,079,456	25,394,583	23,466,090
Selling, general and administrative expenses	2,241,693	2,179,677	4,473,315	4,406,089
Operating expenses	14,921,084	14,259,133	29,867,898	27,872,179
Income from operations	263,922	274,668	551,896	347,435
Other income:
Interest and dividend income	1,920	1,237	3,749	2,891
Unrealized gain on marketable securities, net	4,984	1,864	248	7,944
Income before income taxes	270,826	277,769	555,893	358,270
Provision for income taxes	137,000	110,000	277,000	144,000
Consolidated net income	133,826	167,769	278,893	214,270
Less: net income attributable to noncontrolling interest	(13,761)	(26,786)	(25,080)	(48,695)
Net income attributable to TSR, Inc.	$ 120,065	$ 140,983	$ 253,813	$ 165,575
Net income per TSR, Inc. common share	$ 0.06	$ 0.07	$ 0.13	$ 0.08
Weighted average number of common shares outstanding	1,962,062	1,962,062	1,962,062	1,962,062