Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Sales	$ 13,980,009	$ 13,578,269	$ 46,990,716	$ 44,633,542
Cost of Sales	12,113,699	11,220,791	37,942,179	38,590,544
Gross Profit	1,866,310	2,357,478	9,048,537	6,042,998
Selling, General and Administrative Expenses	1,277,001	1,606,626	3,863,975	3,918,205
Operating Income	589,309	750,852	5,184,562	2,124,793
Other Income (Expense):
Federal tax credits realized	0	3,270,424	0	3,270,424
Gain on deconsolidation of variable interest entity			0	569,997
Other income	176,851	183,596	180,004	189,914
Interest expense	(310,231)	(313,376)	(982,592)	(821,138)
Income before Income Taxes	455,929	3,891,496	4,381,974	5,333,990
Provision for Income Taxes	158,000	196,000	1,375,000	452,000
Net Income	297,929	3,695,496	3,006,974	4,881,990
Net Income Attributable to Non-controlling Interest			0	(49,599)
Preferred Dividends	(146,473)	(132,500)	(439,144)	(361,267)
Net Income Attributable to Common Stockholders	$ 151,456	$ 3,562,996	$ 2,567,830	$ 4,471,124
Basic (in dollars per share)	$ 0.01	$ 0.13	$ 0.09	$ 0.16
Diluted (in dollars per share)	$ 0.01	$ 0.12	$ 0.09	$ 0.15
Basic (in shares)	28,279,701	28,279,701	28,279,701	28,279,701
Diluted (in shares)	28,775,156	32,104,265	28,774,701	32,105,424
Income Per Share of Common Stock -
Basic (in dollars per share)	$ 0.01	$ 0.13	$ 0.09	$ 0.16
Diluted (in dollars per share)	$ 0.01	$ 0.12	$ 0.09	$ 0.15
Weighted Average Shares of Common Stock Outstanding -
Basic (in shares)	28,279,701	28,279,701	28,279,701	28,279,701
Diluted (in shares)	28,775,156	32,104,265	28,774,701	32,105,424
Sales	$ 13,980,009	$ 13,578,269	$ 46,990,716	$ 44,633,542
Cost of Sales	12,113,699	11,220,791	37,942,179	38,590,544
Gross Profit	1,866,310	2,357,478	9,048,537	6,042,998
Selling, General and Administrative Expenses	1,277,001	1,606,626	3,863,975	3,918,205
Operating Income	$ 589,309	$ 750,852	$ 5,184,562	$ 2,124,793