Condensed Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING ACTIVITIES
Net income	$ 335,861	$ 1,261,840
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	0	2,952
Deferred income taxes	(43,000)	72,000
Stock compensation expense	25,224	13,707
Changes in operating assets and liabilities:
Accounts receivable	528,445	(679,505)
Inventory	(163,814)	273,928
Prepaid expenses	(36,658)	(213,587)
Net investment in sales type leases	11,041	9,622
Accounts payable, accrued expenses and other	10,056	(66,854)
Payroll liabilities	40,387	(13,685)
Customer deposits	(407,924)	(266,500)
Income tax receivable and payable	132,400	319,950
Net cash provided by operating activities	432,017	713,868
NET INCREASE IN CASH AND CASH EQUIVALENTS	432,017	713,868
CASH AND CASH EQUIVALENTS
Beginning of period	4,786,923	4,945,913
End of period	5,218,940	5,659,781
Non-cash investing and financing activities:
Treasury stock cost related to compensation	7,542	0
Supplemental cash flow information:
Operating cash outflow for operating leases	$ 14,508	$ 15,340