Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Cash Flows from Operating Activities:
Net income	$ 3,496,217	$ 2,814,728
Adjustments to reconcile net income to net cash provided by operating activities -
Depreciation and amortization	4,015,292	4,400,422
Forgiveness of debt	(3,068,497)
Gain on sale of assets	(22,336)
Deferred tax expense	99,000	1,257,000
Decrease (increase) in trade accounts receivable	(999,470)	2,290,113
Decrease (increase) in related party receivables	41,376	(23,889)
Decrease (increase) in inventory	(846,041)	752,526
Increase in prepaid expenses	(577,297)	(53,564)
Increase in accounts payable and accrued liabilities	3,258,539	39,602
Increase (decrease) in deferred revenue	3,787,750	(2,911,800)
Net cash provided by operating activities	9,184,533	8,565,138
Cash Flows from Investing Activities:
Purchase of property and equipment	(4,875,530)	(2,252,271)
Proceeds from sale of assets	50,000
Net cash used in investing activities	(4,825,530)	(2,252,271)
Cash Flows from Financing Activities:
Proceeds from long-term debt	837,000
Payments on long-term debt and financing leases	(4,390,444)	(3,631,852)
Payments on related party note payable and financing lease	(353,523)	(885,206)
Proceeds from revolving loan	3,700,000	1,250,000
Payments on revolving loan		(3,190,003)
Proceeds from stock options exercised	24,000
Purchase of treasury stock	(281,500)
Payments for debt issuance costs	(4,752)
Dividends paid on preferred stock	(162,945)	(247,946)
Distributions paid by non-controlling interest	(132,200)	(156,600)
Net cash used in financing activities	(764,364)	(6,861,607)
Net Increase (Decrease) in Cash	3,594,639	(548,740)
Cash, beginning of period	4,387,533	1,131,850
Cash, end of period	7,982,172	583,110
Non-cash Activities:
Acquisition of equipment through financing lease	24,441
Capital expenditures in accounts payable	255,062	48,379
Equipment transferred from inventory		26,750
Preferred dividend accrual	80,137	80,137
Supplemental information:
Interest paid	627,555	897,045
Income taxes paid	$ 1,015,000