Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Income Statement [Abstract]
Sales	$ 13,578,269	$ 22,450,682	$ 44,633,542	$ 53,069,648
Cost of Sales	11,220,791	19,734,155	38,590,544	47,914,061
Gross Profit	2,357,478	2,716,527	6,042,998	5,155,587
Selling, General and Administrative Expenses	1,606,626	1,680,979	3,918,205	4,033,483
Operating Income	750,852	1,035,548	2,124,793	1,122,104
Other Income (Expense):
Federal tax credits realized	3,270,424		3,270,424
Gain from forgiveness of debt				3,068,497
Gain from deconsolidation of variable interest entity			569,997
Other income	183,596	3,688	189,914	35,731
Interest expense	(313,376)	(201,992)	(821,138)	(631,115)
Income before Income Taxes	3,891,496	837,244	5,333,990	3,595,217
Provision for Income Taxes	(196,000)	(234,000)	(452,000)	(99,000)
Net Income	3,695,496	603,244	4,881,990	3,496,217
Income Attributable to Non-controlling Interest		(70,649)	(49,599)	(208,600)
Preferred Dividends	(132,500)		(361,267)	(243,082)
Net Income Attributable to Common Stockholders	$ 3,562,996	$ 452,458	$ 4,471,124	$ 3,044,535
Income Per Share of Common Stock -
Basic	$ 0.13	$ 0.02	$ 0.16	$ 0.11
Diluted	$ 0.12	$ 0.02	$ 0.15	$ 0.10
Weighted Average Shares of Common Stock Outstanding -
Basic	28,279,701	28,472,639	28,279,701	28,472,256
Diluted	32,104,265	28,967,144	32,105,424	32,301,084
Preferred Dividends	$ (132,500)	$ (80,137)