Condensed Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
CURRENT ASSETS
Cash and cash equivalents	$ 6,111,653	$ 2,257,696
Short-term investments	2,144,728	4,627,744
Accounts receivable, net	1,783,148	2,343,062
Inventory, net	1,883,361	1,935,679
Prepaid expenses	393,432	534,767
Net investment in sales type leases - current	59,765	75,858
Income tax receivable	0	50,156
TOTAL CURRENT ASSETS	12,376,087	11,824,962
LONG-TERM ASSETS
Accounts receivable - long-term	633,629	1,011,355
Property and equipment, net	121,472	149,669
Net investment in sales type leases - long term	62,431	46,924
Software development costs, net	10,853	13,355
Operating lease right-of-use assets	430,891	474,157
TOTAL LONG-TERM ASSETS	1,259,276	1,695,460
TOTAL ASSETS	13,635,363	13,520,422
CURRENT LIABILITIES
Accounts payable and accrued expenses	265,944	216,944
Customer deposits	113,751	870,602
Current portion of operating lease liabilities	113,762	80,999
Income tax payable	27,936	0
TOTAL CURRENT LIABILITIES	521,393	1,168,545
LONG-TERM LIABILITIES
Operating lease liabilities	385,673	435,796
Deferred tax liability	479,000	454,000
TOTAL LIABILITIES	1,386,066	2,058,341
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value; 25,000,000 shares authorized: 4,756,734 shares issued; and 4,641,523 and 4,635,568 shares outstanding at September 30, 2025 and December 31, 2024, respectively.	4,642	4,636
Additional paid-in capital	2,545,003	2,470,850
Retained earnings	9,915,995	9,209,030
Stockholders' Equity before Treasury Stock	12,465,640	11,684,516
Treasury stock, 115,211 and 121,166 shares (at cost) at September 30, 2025 and December 31, 2024, respectively.	(216,343)	(222,435)
TOTAL STOCKHOLDERS’ EQUITY	12,249,297	11,462,081
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 13,635,363	$ 13,520,422

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.