Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash	$ 1,205,400	$ 688,000
Accounts receivable less $5,000 allowance for doubtful accounts	894,700	1,352,300
Inventory	187,300	127,900
Prepaid and other	92,100	135,000
Total current assets	2,379,500	2,303,200
Fixed assets
Leasehold improvements	27,800	24,200
Furniture, fixtures and equipment	256,400	252,500
Fixed assets, gross	284,200	276,700
Less: accumulated depreciation and amortization	211,000	206,600
Total fixed assets	73,200	70,100
Other assets
Long-term receivables	861,300	957,000
Operating lease right of use - building	191,800	202,000
Other assets	1,053,100	1,159,000
Total assets	3,505,800	3,532,300
Current liabilities
Convertible debentures	97,900	97,900
Accounts payable	19,100	44,300
Accrued expenses	241,700	231,600
Income taxes	52,700	52,400
Operating lease liability - current	42,400	41,700
Total current liabilities	453,800	467,900
Other liabilities
Accrued expenses, non-current	60,300	67,000
Deferred income taxes		47,400
Operating lease liability - non-current	149,400	160,300
Total other liabilities	209,700	274,700
Stockholders' equity
Common stock, $0.01 par value Authorized - 75,000,000 shares, Issued and outstanding - 61,044,698 shares	610,400	610,400
Paid-in capital	12,483,900	12,483,900
Accumulated deficit	(10,252,000)	(10,304,600)
Total stockholders' equity	2,842,300	2,789,700
Total liabilities and stockholders' equity	$ 3,505,800	$ 3,532,300