Balance Sheets - USD ($)	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 1,263,762	$ 1,290,797
Accounts receivable, net of allowance for doubtful accounts of $198,623 at December 31, 2019 and $165,840 at December 31, 2018	2,537,892	2,866,474
Inventory	1,263,589	762,165
Prepaid expenses and other current assets	379,982	291,837
Income tax receivable	167,673	0
TOTAL CURRENT ASSETS	5,612,898	5,211,273
LONG-TERM ASSETS
Property and equipment, net	74,149	86,656
Operating lease right-of-use assets	77,922	0
Contract and other long-term assets	1,037,364	528,401
Long-term accounts receivable - financed contracts	2,253,667	1,030,354
TOTAL LONG-TERM ASSETS	3,443,102	1,645,411
TOTAL ASSETS	9,056,000	6,856,684
CURRENT LIABILITIES
Accounts payable and accrued expenses	367,730	387,868
Payroll liabilities	44,500	34,388
Current portion of operating lease liabilities	53,538	0
Notes payable	0	2,221
Customer deposits	253,709	334,784
Income taxes payable	0	53,027
TOTAL CURRENT LIABILITIES	719,477	812,288
LONG-TERM LIABILITIES
Operating lease liabilities	27,867	0
Contract liabilities	3,148,410	1,690,660
Deferred tax liability	543,000	555,000
TOTAL LIABILITIES	4,438,754	3,057,948
STOCKHOLDERS' EQUITY
Common stock, $0.001 par value; 25,000,000 shares authorized: 4,656,734 shares issued; and 4,506,788 and 4,528,669 shares outstanding at December 31, 2019 and 2018, respectively.	4,507	4,529
Additional paid-in capital	1,847,594	1,795,955
Retained earnings	3,010,776	2,194,778
Stockholders' Equity before Treasury Stock	4,862,877	3,995,262
Treasury stock, 149,946 and 128,065 shares (at cost) at December 31, 2019 and 2018, respectively	(245,631)	(196,526)
TOTAL STOCKHOLDERS' EQUITY	4,617,246	3,798,736
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,056,000	$ 6,856,684