Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Income Statement [Abstract]
Sales	$ 22,450,682	$ 14,511,196	$ 53,069,648	$ 47,602,690
Cost of Sales	19,734,155	11,954,222	47,914,061	38,986,912
Gross Profit	2,716,527	2,556,974	5,155,587	8,615,778
Selling, General and Administrative Expenses	1,680,979	1,168,426	4,033,483	3,639,883
Operating Income	1,035,548	1,388,548	1,122,104	4,975,895
Other Income (Expense):
Other income	3,688	10,178	35,731	19,122
Gain from forgiveness of debt			3,068,497
Interest expense	(201,992)	(270,229)	(631,115)	(923,289)
Income before Income Taxes	837,244	1,128,497	3,595,217	4,071,728
Provision for Income Taxes	(234,000)	(346,000)	(99,000)	(1,257,000)
Net Income	603,244	782,497	3,496,217	2,814,728
Income Attributable to Non-controlling Interest	(70,649)	(68,904)	(208,600)	(203,918)
Preferred Dividends	(80,137)	(80,137)	(243,082)	(243,973)
Net Income Attributable to Common Stockholders	$ 452,458	$ 633,456	$ 3,044,535	$ 2,366,837
Income Per Share of Common Stock -
Basic	$ 0.02	$ 0.02	$ 0.11	$ 0.08
Diluted	0.02	0.02	$ 0.10	$ 0.08
Basic and Diluted	$ 0.02	$ 0.02
Weighted Average Shares of Common Stock Outstanding -
Basic	28,472,639	28,361,201	28,472,256	28,361,201
Diluted	28,967,144	29,029,157	32,301,084	32,363,012